Particular Active Media Patents (Class 372/39)
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Patent number: 12149053Abstract: In a semiconductor device, a quantum dot group includes a stack of plural quantum dot layers having different central wavelengths at which respective gains are maximum. A part of or all of the quantum dot layers are stacked so that the central wavelengths sequentially shifts along a stacking direction. The quantum dot group includes a longest wavelength layer group composed of some quantum dot layers including a longest wavelength layer having a longest central wavelength and at least one quantum dot layer stacked on the longest wavelength layer. The longest wavelength layer or the longest wavelength layer group has a larger gain at the central wavelength than the gain at the central wavelength of each of the other quantum dot layers.Type: GrantFiled: March 31, 2023Date of Patent: November 19, 2024Assignees: DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, MIRISE Technologies Corporation, QD LASER, Inc.Inventors: Hitoshi Yamada, Yuki Kamata, Koichi Oyama, Yutaka Ohnishi, Kenichi Nishi, Keizo Takemasa
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Patent number: 12087880Abstract: The present disclosure provides techniques for epitaxial oxide materials, structures and devices. In some embodiments, a semiconductor structure includes an epitaxial oxide heterostructure, including: a substrate; a first epitaxial oxide layer comprising (Nix1Mgy1Zn1-x1-y1)(Alq1Ga1-q1)2O4 wherein 0?x1?1, 0?y1?1 and 0?q1?1; and a second epitaxial oxide layer comprising (Nix2Mgy2Zn1-x2-y2)(Alq2Ga1-q2)2O4 wherein 0?x2?1, 0?y2?1 and 0?q2?1. In some cases, at least one condition selected from x1?x2, y1?y2, and q1?q2 is satisfied.Type: GrantFiled: February 22, 2022Date of Patent: September 10, 2024Assignee: Silanna UV Technologies Pte LtdInventor: Petar Atanackovic
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Patent number: 12082439Abstract: Device structures are provided that include an OLED arranged in a stack with one or more additional layers that form a Tamm plasmon stack. The structure allows for coupling emitter excited state energy into the emissive Tamm plasmon mode.Type: GrantFiled: March 10, 2020Date of Patent: September 3, 2024Assignee: Universal Display CorporationInventors: Michael Fusella, Nicholas J. Thompson, Vinod M. Menon
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Patent number: 12046870Abstract: An optical semiconductor device includes a substrate, a semiconductor multilayer which is formed on the substrate, and includes an optical functional layer, an insulating film formed on the semiconductor multilayer, and an electrode formed on a part of the insulating film. The insulating film covers the semiconductor multilayer except for a region in which the semiconductor multilayer and the electrode are electrically connected to each other. At least a part of a region of the insulating film that is overlapped with the electrode is thinner than a region of the insulating film that is not overlapped with the electrode.Type: GrantFiled: April 29, 2022Date of Patent: July 23, 2024Assignee: Lumentum Japan, Inc.Inventors: Atsushi Nakamura, Shigetaka Hamada, Ryosuke Nakajima, Ryu Washino, Shoko Yokokawa, Kouji Nakahara
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Patent number: 11900587Abstract: A system for creating a wiring guide graphic comprising a database configured to receive inputs of a connector body identity, an engineering specification and a wiring table; and a processor coupled to the sensor, the processor configured to create a wiring guide graphic.Type: GrantFiled: May 17, 2021Date of Patent: February 13, 2024Assignee: Raytheon CompanyInventors: Michael P. Wilkinson, Steven A. Iskra
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Patent number: 11880062Abstract: A microheater comprises an optical fiber including a rare earth-doped glass core surrounded by a glass cladding. The rare earth-doped glass core comprises a rare earth dopant at a concentration sufficient for luminescence quenching such that, when the rare earth dopant is pumped with light at an absorption band wavelength, at least about 90% of absorbed pump light is converted into heat.Type: GrantFiled: November 20, 2019Date of Patent: January 23, 2024Assignees: THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS, CLEMSON UNIVERSITYInventors: Peter Dragic, John Ballato, Andrey Mironov, Courtney Kucera, Matthew Tuggle
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Patent number: 11874913Abstract: Methods and systems are provided for a multi-factor authentication technique that includes inputs of a physical key possessed by the user as a factor. Such a key may be a physical object that the user possesses and that includes truly random features not easily reproducible. The key may be custom to the user and may include inclusions or anomalies that affect a signal transmitted through the key. Such effects may impart a unique effect on signals transmitted through the key, producing a unique fingerprint to identify whether the key is authentication. An input from the user may be an additional factor within the authentication process.Type: GrantFiled: October 29, 2021Date of Patent: January 16, 2024Assignee: PAYPAL, INC.Inventor: Joshua Buck Powers
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Patent number: 11870210Abstract: The present invention discloses a transverse mode switchable all-fiber high-order mode Brillouin laser. The laser comprises a narrow linewidth pump laser, an optical amplifier, a 1×N optical switch (N?2), a fiber mode selection coupler group, a first polarization controller, a fiber circulator, a fiber coupler, a second polarization controller, and a few-mode fiber. Based on the Brillouin nonlinear gain of a few-mode fiber in a ring cavity, the present invention realizes the resonance amplification of a specific order transverse mode in the cavity, and obtains the transverse mode switchable high-order mode laser beam output. The present invention, adopting an all-fiber structure, has the advantages of simple structure, low cost, easy fiber system integration, high stability and narrow linewidth of outputted laser beams, etc., and improves the practicality and reliability of high-order mode lasers.Type: GrantFiled: October 16, 2018Date of Patent: January 9, 2024Assignee: South China University of TechnologyInventors: Jiulin Gan, Xiaobo Heng, Zhongmin Yang, Zhishen Zhang
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Patent number: 11803097Abstract: A self-seeded optical parametric amplifier (OPA) system includes a cavity mirror, a wavelength conversion unit, and a dichroic filter. The cavity mirror is configured to allow high transmission for an input laser beam and high reflection for a feedback beam. The wavelength conversion unit is configured to convert the input laser beam into a signal laser beam and an idler laser beam. The dichroic filter is configured to allow one of the signal laser beam and the idler laser beam to pass through the dichroic filter and reflect the other one onto a feedback path.Type: GrantFiled: June 22, 2022Date of Patent: October 31, 2023Assignee: HC PHOTONICS CORP.Inventors: Ming-Hsien Chou, Jui-Yu Lai, Chih-Rong Chen
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Patent number: 11761459Abstract: A fluidic device may include a vertical fluid dispensing volume having a side outlet, a fluid channel connected to the vertical fluid dispensing volume below the side outlet and a fluid actuator asymmetrically located between ends of the fluid channel to form an inertial pump to vertically pump fluid within the channel to the side outlet.Type: GrantFiled: January 16, 2018Date of Patent: September 19, 2023Assignee: Hewlett-Packard Development Company, L.P.Inventors: Hilary Ely, Pavel Kornilovich, Daniel Curthoys
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Patent number: 11753331Abstract: Disclosed herein are glass-ceramic articles including a crystalline phase comprising a jeffbenite crystalline structure. The glass-ceramic articles may include a first surface, a second surface opposite the first surface, and a perimeter defining a shape of the glass-ceramic article. The glass-ceramic articles may further include a phase assemblage comprising one or more crystalline phases and a glass phase. The one or more crystalline phases may include a crystalline phase having the jeffbenite crystalline structure.Type: GrantFiled: August 12, 2022Date of Patent: September 12, 2023Assignee: Corning IncorporatedInventors: George Halsey Beall, John Philip Finkeldey, Charlene Marie Smith
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Patent number: 11715521Abstract: A method of manufacturing a doped polycrystalline ceramic optical device includes mixing a plurality of transition metal complexes and a plurality of rare-earth metal complexes to form a metal salt solution, heating the metal salt solution to form a heated metal salt solution, mixing the heated metal salt solution and an organic precursor to induce a chemical reaction between the heated metal salt solution and the organic precursor to produce a plurality of rare-earth doped crystalline nanoparticles, and sintering the plurality of rare-earth doped nanoparticles to form a doped polycrystalline ceramic optical device having a rare-earth element dopant that is uniformly distributed within a crystal lattice of the doped polycrystalline ceramic optical device.Type: GrantFiled: May 11, 2022Date of Patent: August 1, 2023Assignee: Corning IncorporatedInventors: Jason Allen Brown, Stuart Gray, Thomas Dale Ketcham, Daniel Aloysius Nolan, Wageesha Senaratne, Jun Yang, Haitao Zhang
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Patent number: 11703940Abstract: A beam generating device includes a semiconductor substrate, having an optical passband. A first array of vertical-cavity surface-emitting lasers (VCSELs) is formed on a first face of the semiconductor substrate and are configured to emit respective laser beams through the substrate at a wavelength within the passband. A second array of microlenses is formed on a second face of the semiconductor substrate in respective alignment with the VCSELs so as to transmit the laser beams generated by the VCSELs. The VCSELs are configured to be driven to emit the laser beams in predefined groups in order to change a characteristic of the laser beams.Type: GrantFiled: March 5, 2019Date of Patent: July 18, 2023Assignee: APPLE INC.Inventors: Alexander Shpunt, Raviv Erlich, Zafrir Mor
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Patent number: 11641090Abstract: A system includes a planar waveguide that includes an active gain medium configured to receive pump light from a pump source and amplify stimulated emission light. The planar waveguide has a fast axis and a slow axis and is configured to operate in single mode in the fast axis and multimode in the slow axis. The system also includes a hybrid spatial filter configured to receive the amplified stimulated emission light from the planar waveguide and output laser light. The hybrid spatial filter includes a physical slit having a narrower dimension corresponding to the slow axis of the planar waveguide. The physical slit is configured to reduce an intensity of the amplified stimulated emission light received from the planar waveguide. The hybrid spatial filter also includes a Volume Bragg Grating (VBG) configured to constrain an angle of the amplified stimulated emission light and enable compact geometry intra-cavity beam expanding/collimating optics.Type: GrantFiled: July 17, 2020Date of Patent: May 2, 2023Assignee: Raytheon CompanyInventors: Aaron B. Potter, Kalin Spariosu
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Patent number: 11600968Abstract: A single-mode micro-laser based on a single whispering gallery mode optical microcavity and a preparation method thereof described includes: preparing a desired single whispering gallery mode optical microcavity doped with rare earth ions or containing a gain material such as quantum dots, wherein an optical microcavity configuration include a micro-disk cavity, a ring-shaped microcavity, and a racetrack-shaped microcavity; a material type include lithium niobate, silicon dioxide, silicon nitride, etc.; preparing an optical fiber cone or an optical waveguide of a required size which can excite high-order modes of the optical microcavity, such as a ridge waveguide and a circular waveguides; and coupling, integrating, and packaging the optical fiber cone or the optical waveguide with the microcavity. A pump light is coupled to the optical fiber cone or the optical waveguide to excite a compound mode with a polygonal configuration.Type: GrantFiled: August 10, 2021Date of Patent: March 7, 2023Assignee: East China Normal UniversityInventors: Ya Cheng, Jintian Lin, Zhiwei Fang, Renhong Gao, Jianglin Guan, Min Wang
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Patent number: 11581702Abstract: A semiconductor laser diode is disclosed. In an embodiment a semiconductor laser diode includes a first resonator and a second resonator, the first and second resonators having parallel resonator directions along a longitudinal direction and being monolithically integrated into the semiconductor laser diode, wherein the first resonator includes at least a part of a semiconductor layer sequence having an active layer and an active region configured to be electrically pumped to generate a first light, wherein the longitudinal direction is parallel to a main extension plane of the active layer, and wherein the second resonator has an active region with a laser-active material configured to be optically pumped by at least a part of the first light to produce a second light which is partially emitted outwards from the second resonator.Type: GrantFiled: May 17, 2018Date of Patent: February 14, 2023Assignee: OSRAM OLED GMBHInventors: Bernhard Stojetz, Christoph Eichler, Alfred Lell, Sven Gerhard
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Patent number: 11522103Abstract: The present disclosure provides techniques for epitaxial oxide materials, structures and devices. In some embodiments, a semiconductor structure includes an epitaxial oxide heterostructure, comprising: a substrate; a first epitaxial oxide layer comprising (Nix1Mgy1Zn1?x1?yl)2GeO4 wherein 0?x1?1 and 0?y1?1; and a second epitaxial oxide layer comprising (Nix2Mgy2Zn1?x2?y2)2GeO4 wherein 0?x2?1 and 0?y2?1. In some cases, either: x1?x2 and y1=y2; x1=x2 and y1?y2; or x1?x2 and y1?y2. In some embodiments, a semiconductor structure includes an epitaxial oxide heterostructure, comprising: a substrate; a first epitaxial oxide layer comprising (Mgx1Zn1?x1)(Aly1Ga1?y1)2O4 wherein 0?x1?1 and 0?y1?1; and a second epitaxial oxide layer comprising (Nix2Mgy2Zn1?x2?y2)2GeO4 wherein 0?x2?1 and 0?y2?1.Type: GrantFiled: February 22, 2022Date of Patent: December 6, 2022Assignee: Silanna UV Technologies Pte LtdInventor: Petar Atanackovic
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Patent number: 11435627Abstract: A liquid crystal on silicon (LCOS) display device and an electronic device are disclosed. The LCOS display device includes a wafer substrate and a pixel electrode layer over the wafer substrate. The pixel electrode layer comprises a plurality of pixel electrodes, and a reflector stack or at least a stack comprised of, stacked vertically downward, a first high refractive index insulating layer and a first low refractive index insulating layer is arranged between every adjacent two pixel electrodes. By arranging the reflector stacks or stacked layers (in the gaps) between adjacent pixel electrodes, the gaps exhibit higher reflectivity and produce less diffraction noise.Type: GrantFiled: August 19, 2021Date of Patent: September 6, 2022Assignee: OMNIVISION SEMICONDUCTOR (SHANGHAI) CO., LTD.Inventors: Takashi Kozakai, Regis Fan, Ming Zhang, Libo Weng
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Patent number: 11361822Abstract: A method of manufacturing a doped polycrystalline ceramic optical device includes mixing a plurality of transition metal complexes and a plurality of rare-earth metal complexes to form a metal salt solution, heating the metal salt solution to form a heated metal salt solution, mixing the heated metal salt solution and an organic precursor to induce a chemical reaction between the heated metal salt solution and the organic precursor to produce a plurality of rare-earth doped crystalline nanoparticles, and sintering the plurality of rare-earth doped nanoparticles to form a doped polycrystalline ceramic optical device having a rare-earth element dopant that is uniformly distributed within a crystal lattice of the doped polycrystalline ceramic optical device.Type: GrantFiled: January 17, 2020Date of Patent: June 14, 2022Assignee: Coming IncorporatedInventors: Jason Allen Brown, Stuart Gray, Thomas Dale Ketcham, Daniel Aloysius Nolan, Wageesha Senaratne, Jun Yang, Haitao Zhang
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Patent number: 11340337Abstract: A laser transmitter assembly for use in a Coherent Doppler Wind Lidar (“CDWL”) system includes a telescope/scanner assembly, a receiver, and a master oscillator crystal and a power amplifier crystal each constructed of Ho:YAG. The crystals are end-pumped to transmit an output beam through the telescope/scanner assembly with a high repetition rate of 200-300 Hz and 35 mJ of energy. As part of the CDWL system, a pump laser end-pumps the master oscillator and power amplifier crystals using a pump beam having a nominal wavelength of 1.905 ?m. A seed laser transmits a seeding beam into the master oscillator crystal at a nominal wavelength of 2.0965 ?m. The telescope/scanner assembly transmits the generated laser beam through an atmosphere toward a scene of interest, collects a backscattered return signal, and communicates the backscattered return signal to the receiver during operation of the CDWL system.Type: GrantFiled: December 17, 2019Date of Patent: May 24, 2022Assignee: UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF NASA.Inventors: Upendra N Singh, Mulugeta Petros, Tamer F. Refaat
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Patent number: 11177352Abstract: Example embodiments relate to a graphene device, methods of manufacturing and operating the same, and an electronic apparatus including the graphene device. The graphene device is a multifunctional device. The graphene device may include a graphene layer and a functional material layer. The graphene device may have a function of at least one of a memory device, a piezoelectric device, and an optoelectronic device within the structure of a switching device/electronic device. The functional material layer may include at least one of a resistance change material, a phase change material, a ferroelectric material, a multiferroic material, multistable molecules, a piezoelectric material, a light emission material, and a photoactive material.Type: GrantFiled: January 22, 2020Date of Patent: November 16, 2021Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jinseong Heo, Kiyoung Lee, Seongjun Park
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Patent number: 11164677Abstract: A system, method, diagnostic and container delivery system for manipulating a target, by manipulating with the quantum coherence of the target. The method includes identifying intrinsic parameters of the target and determining target-tuned design factors based at least partially on the intrinsic parameters. Target-tuned electrons and fields are generated based in part on the target-tuned design factor. The target-tuned electrons and fields are defined by discrete quantized energy levels. The method may include preparing a container to carry the unquantized target-tuned electrons, the container being composed of superconductor quantum dots. The unquantized target-tuned electrons are transferred to the container to form target-tuned artificial atoms having quantized target-tuned electrons, which may be delivered to the target as a manipulating agent. Alternatively, the unquantized target-tuned electrons may be delivered directly to the subject.Type: GrantFiled: January 18, 2021Date of Patent: November 2, 2021Assignee: SpinQ Biophysics, Inc.Inventors: Marc Harris, Deni Hogan
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Patent number: 11120332Abstract: Opto-electronic devices can evaluate convolutional neural networks with reduced power consumption and higher speeds using optical metamaterial structures. Methods and systems for convolution of an input vector f with a kernel k can include a first optical element that is adjustable according to the input vector f and a second optical element that is adjustable according to the kernel k, where either or both elements can include adjustable optical metasurfaces. In some approaches, the second optical element is adjustable according to a Fourier transform of the kernel k and is interposed between first and second lenses or volumetric metamaterials implementing Fourier and inverse Fourier transforms, respectively.Type: GrantFiled: February 18, 2021Date of Patent: September 14, 2021Assignee: Neurophos LLCInventors: Patrick Bowen, Andrew Traverso, Daniel Marks, David Smith
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Patent number: 11050005Abstract: A phosphor composed by containing Ce3+ as a light emission center in a matrix garnet compound having a garnet structure. The matrix garnet compound is a solid solution composed of two or more end members, and the end members include Lu2CaMg2(SiO4)3 as a first end member. It is preferable that the matrix garnet compound is a compound containing Al. A light emitting device uses the phosphor 2 and includes a solid-state light emitting device 117. The phosphor 2 is excited by light radiated by the solid-state light emitting device 117.Type: GrantFiled: March 6, 2017Date of Patent: June 29, 2021Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Takeshi Abe, Shozo Oshio
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Patent number: 10971895Abstract: A surface plasmon infrared nano-pulse laser having a multi-resonance competition mechanism, consisting of the four parts of a surface plasmon nano-pin resonance chamber (1), a spacer layer (2), a gain medium (3), and a two-dimensional material layer (4). The surface plasmon nano-pin resonance chamber (1) consists of a metal nano rod (11) and one or more nano sheets (12) grown thereon, the surface plasmon nano-pin resonance chamber (1) and the gain medium (3) being isolated by the isolating layer (2), and the two-dimensional material layer (4) covering a surface of the surface plasmon nano-pulse laser; positive and negative electrodes (5) are located at two ends of the surface plasmon nano-pulse laser, and a layer of a two-dimensional material having a feature of saturatable absorption is introduced to a surface of the nano-pin resonance chamber.Type: GrantFiled: May 28, 2018Date of Patent: April 6, 2021Assignee: Southeast UniversityInventors: Tong Zhang, Feng Shan, Xiaoyang Zhang, Xiaoyi Pang
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Patent number: 10879670Abstract: The invention provides a continuous-wave pumped polymer laser and preparation method thereof, comprising: coating an organic polymer solution onto a substrate to form an polymer film, and applying a template having a distributed feedback structure to the polymer film, or coating an organic polymer solution onto a substrate having a distributed feedback structure to form an polymer film, and applying a plate to the polymer film; heating the substrate to reach above the phase transition temperature of the organic polymer, and applying a pressure to the template or plate for 1-100 min; and cooling the substrate to reach below the phase transition temperature of the organic polymer, and removing the template or plate from the organic polymer. The method of the invention is simple, the organic polymer molecular chain and supramolecular structure are oriented to have long range order, and the obtained laser can use continuous-wave pumping.Type: GrantFiled: November 6, 2018Date of Patent: December 29, 2020Assignee: SOOCHOW UNIVERSITYInventors: Zhijun Hu, Xiaohui Li, Chinhua Wang, Yuyan Weng
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Patent number: 10795250Abstract: A lighting apparatus includes a laser source configured to emit a laser beam, a homogenizer optical element that includes a light flux dividing section disposed to face the laser source, configured to divide the laser beam into a plurality of separate laser beams in a plane and make advancing directions of the plurality of separate laser beams different from each other, and a light flux superimposing section formed integrally with the light flux dividing section and superimposing the plurality of separate laser beams on each other in a common radiation region, and a fluorescent material disposed to face the homogenizer optical element, excited by the plurality of separate laser beams superimposed in the radiation region using the light flux superimposing section so as to emit fluorescence.Type: GrantFiled: February 5, 2019Date of Patent: October 6, 2020Assignee: STANLEY ELECTRIC CO., LTD.Inventors: Yusuke Yokobayashi, Masaru Kuramoto
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Patent number: 10777959Abstract: This disclosure provides planar waveguides with enhanced support and/or cooling. One or more endcaps could be disposed between coating/cladding layers at one or more ends of a core region, where the core region is doped with at least one active ion species and each endcap is not doped with any active ion species that creates substantial absorption at pump and signal wavelengths. A core region could include at least one crystal or crystalline material, and at least one cladding layer could include at least one glass. Different types of coolers could be disposed on or adjacent to different coating/cladding layers. Side claddings could be disposed on opposite sides of a planar waveguide, where the opposite sides represent longer sides of the waveguide. Endcaps and one or more coolers could be sealed to a housing, and coolant can flow through a substantially linear passageway along a length of the waveguide. One side of a planar waveguide could be uncooled.Type: GrantFiled: November 29, 2017Date of Patent: September 15, 2020Assignee: Raytheon CompanyInventors: Stephen H. McGanty, David M. Filgas, Christopher R. Koontz
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Patent number: 10741990Abstract: Apparatus and methods for producing ultrashort optical pulses are described. A high-power, solid-state, passively mode-locked laser can be manufactured in a compact module that can be incorporated into a portable instrument. The mode-locked laser can produce sub-50-ps optical pulses at a repetition rates between 200 MHz and 50 MHz, rates suitable for massively parallel data-acquisition. The optical pulses can be used to generate a reference clock signal for synchronizing data-acquisition and signal-processing electronics of the portable instrument.Type: GrantFiled: March 25, 2019Date of Patent: August 11, 2020Assignee: Quantum-Si IncorporatedInventors: Jonathan M. Rothberg, Jason W. Sickler, Lawrence C. West, Faisal R. Ahmad, Paul E. Glenn, Jack Jewell, John Glenn, Jose Camara, Jeremy Christopher Jordan, Todd Rearick, Farshid Ghasemi, Jonathan C. Schultz, Keith G. Fife, Benjamin Cipriany
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Patent number: 10727449Abstract: A light-emitting device (10) includes a light-transmitting first base material (210), a light-transmitting second base material (220), and a plurality of light-emitting units (140). The light-emitting units (140) are located between the first base material (210) and the second base material (220). The light-emitting units (140) emit light having a peak at a first wavelength. In addition, the light-emitting device (10) includes a light-transmitting region located between the plurality of light-emitting units (140). Further, the second base material (220) includes an absorption layer (170). The absorption layer (170) is a layer that particularly absorbs light of the first wavelength.Type: GrantFiled: June 24, 2016Date of Patent: July 28, 2020Assignee: PIONEER CORPORATIONInventor: Akira Hirasawa
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Patent number: 10718902Abstract: A luminescent photonic structure that comprises a luminescent material that when excited by an excitation light having a wavelength within an excitation wavelength spectrum of the luminescent material emits luminescent light having a luminescence wavelength spectrum. The luminescent photonic structure comprises a photonic crystal disposed between two other photonic crystals. The photonic crystal has a photonic lattice period within one of the luminescence wavelength spectrum and the excitation wavelength spectrum. The two other photonic crystals each have a photonic lattice period within the other of the luminescence wavelength spectrum and the excitation wavelength spectrum for reflecting one of excitation light and luminescent light propagating within the photonic crystal.Type: GrantFiled: June 14, 2016Date of Patent: July 21, 2020Assignee: GRIFFITH UNIVERSITYInventors: Qin Li, Ehsan Eftekhari, Dave Kielpinski
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Patent number: 10684472Abstract: [Problem] Provided is a see-through layered body which allows obtaining a projection type image display transparent screen with a wide viewing angle, and excellent image clarity and transparency. [Solving means] A see-through layered body according to the present invention comprises an intermediate resin film, two transparent substrates holding the intermediate resin film, wherein the intermediate resin film comprises a resin and from 0.0001 to 15% by mass of microparticles, having an average diameter of from 1 nm to 100 ?m, and the center plane average roughness SRa of outermost surfaces on both sides of the layered body is from 0.05 to 5.5 nm.Type: GrantFiled: March 19, 2019Date of Patent: June 16, 2020Assignee: JXTG NIPPON OIL & ENERGY CORPORATIONInventors: Kousuke Yamaki, Suzushi Nishimura, Akira Matsuo
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Patent number: 10649344Abstract: Disclosed is an illumination source apparatus comprising a high harmonic generation medium, a pump radiation source and a spatial filter. The pump radiation source emits a beam of pump radiation having a profile comprising no pump radiation in a central region of the beam and excites the high harmonic generation medium so as to generate high harmonic radiation. The pump radiation and the generated high harmonic radiation are spatially separated beyond the focal plane of the beam of pump radiation. The spatial filter is located beyond a focal plane of the beam of pump radiation, and blocks the pump radiation. Also disclosed is a method of generating high harmonic measurement radiation optimized for filtration of pump radiation therefrom.Type: GrantFiled: October 19, 2017Date of Patent: May 12, 2020Assignee: ASML Netherlands B.V.Inventors: Sander Bas Roobol, Simon Gijsbert Josephus Mathijssen
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Patent number: 10641655Abstract: A direct absolute spectrometer includes: a first light source; a second light source; an optical combiner that produces dual light; an optical cell that receives the dual light; an electromagnetically induced transparent medium that is optically transparent to single photon light in a presence of pump light, such that output light is produced; and a filter that filters output light and provides EIT light free from, wherein electromagnetically induced transparent EIT light is a direct and absolute metric of a linewidth and a wavelength of single photon light such that the direct absolute spectrometer provides direct and absolute determination of the linewidth of the single photon light and direct and absolute determination of wavelength at a maximum of intensity of the single photon light.Type: GrantFiled: July 19, 2018Date of Patent: May 5, 2020Assignee: GOVERNMENT OF THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF COMMERCEInventors: Lijun Ma, Xiao Tang, Oliver Slattery
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Patent number: 10536688Abstract: The present disclosure relates to a directional pixel for a high-angular resolution, wide field of view, multiple view display. The design teaches a directional pixel comprising a substrate, one or more pixel driving circuits, one or more nano- or micro-scale subpixels, and one or more directional optical guiding surfaces, wherein each of said one or more subpixels is comprised of a light emitting device emitting a light beam and an optical microcavity housing said light emitting device. The optical microcavity is comprised of a plurality of reflective surfaces to specifically manipulate and tune said light beam, wherein one or more of said reflective surfaces is a light propagating reflective surface which propagates said light beam out of said microcavity, and said light propagating reflective surface is connected to said one or more directional optical guiding surfaces to direct said light beam at a specific angle.Type: GrantFiled: March 15, 2019Date of Patent: January 14, 2020Assignee: Avalon Holographics Inc.Inventors: Wally Haas, Jennifer Campbell-Correa, Matthew Hamilton, Stephen Hill, Jordan Peckham, Chuck Rumbolt
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Patent number: 10348050Abstract: An Nd3+ optical fiber laser and amplifier operating in the wavelength range from 1300 to 1450 nm is described. The fiber includes a rare earth doped optical amplifier or laser operating within this wavelength band is based upon an optical fiber that guides light in this wavelength band. The waveguide structure attenuates light in the wavelength range from 850 nm to 950 nm and from 1050 nm to 1150 nm.Type: GrantFiled: October 7, 2016Date of Patent: July 9, 2019Assignee: Lawrence Livermore National Security, LLCInventors: Jay W Dawson, Graham S Allen, Derrek Reginald Drachenberg, Victor V Khitrov, Michael J Messerly, Paul H Pax, Nick Schenkel
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Patent number: 10227492Abstract: Color conversion films for a LCD (liquid crystal display) having RGB (red, green, blue) color filters, as well as such displays, formulations, precursors and methods are provided, which improve display performances with respect to color gamut, energy efficiency, materials and costs. The color conversion films absorb backlight illumination and convert the energy to green and/or red emission at high efficiency, specified wavelength ranges and narrow emission peaks. The color conversion films may comprise at least one of: polydimethylsiloxane hydroxy terminated, dendritic polyol or polyvinylpyrrolidone.Type: GrantFiled: August 31, 2017Date of Patent: March 12, 2019Assignee: StoreDot Ltd.Inventors: Mor Shmuel Armon, Elad Cohen, Evgenia Liel (Jeny) Kuks, Rony Schwarz, Eran Sella, Daniel Szwarcman
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Patent number: 10164398Abstract: Laser signal intensity is resonantly enhanced within a laser cavity to be greater than a pump intensity. This enables the suppression of excited-state absorption and is applicable to terbium-doped fiber lasers, lambda-type materials, or other materials used in lasers. In other embodiments, ESA is suppressed by de-populating the higher excited state using a resonant cavity.Type: GrantFiled: September 22, 2015Date of Patent: December 25, 2018Assignee: University of RochesterInventors: John R. Marciante, Haomin Yao
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Patent number: 10135032Abstract: A method for producing a light-emitting display device, the method including forming a film of a light-transmissive resin material on a substrate over which a reflective metal and a semi-transparent member can be disposed in at least one of a plurality of pixel regions corresponding to red, green and blue; curing part of the film of the light-transmissive resin material to form a light-transmissive resin layer, the part being in a region including the at least one pixel region; and developing the light-transmissive resin layer after the curing to form an optical path length-adjusting layer.Type: GrantFiled: February 4, 2010Date of Patent: November 20, 2018Assignee: UDC IRELAND LIMITEDInventors: Satoshi Aiba, Toshiro Takahashi
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Patent number: 10056020Abstract: A waveguide display includes a light source, a conditioning lens assembly, a scanning mirror assembly, and a controller. The light source includes a plurality of source elements that are configured to emit image light in accordance with scanning instructions. The conditioning lens assembly transmits conditioned light based in part on the image light. The scanning mirror assembly scans the conditioned image light to particular locations as scanned image light in accordance with scanning instructions. The output waveguide includes an input area and an output area, receives the scanned image light emitted from the scanning mirror assembly at the input area, and outputs the expanded image light from a portion of the output area based in part on a direction of the expanded light output from the scanning mirror assembly. The controller generates the scanning instructions and provides the scanning instructions to the light source and the scanning mirror assembly.Type: GrantFiled: October 13, 2016Date of Patent: August 21, 2018Assignee: Oculus VR, LLCInventors: Wanli Chi, Pasi Saarikko, Hee Yoon Lee
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Patent number: 10054730Abstract: Disclosed are an optical member, a display device having the same, and a method of fabricating the same. The optical member includes a receiving part having an empty space therein, a host in the receiving part, a plurality of wavelength conversion particles in the host, a sealing part in the receiving part, and a pre-treatment layer between the sealing part and an inner surface of the receiving part.Type: GrantFiled: February 20, 2017Date of Patent: August 21, 2018Assignee: LG INNOTEK CO., LTD.Inventors: June Roh, Kyung Jin Kim, Ja Ram Kim, Jae Hong Lee, Soon Young Hyun
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Patent number: 9964680Abstract: The present disclosure describes luminescent solar concentrators that include photoluminescent nanoparticles. The photoluminescent nanoparticles include a semiconductor nanocrystal that sensitizes the luminescence of a defect. The defect can include, for example, an atom, a cluster of atoms, or a lattice vacancy. The defect can be incorporated into the semiconductor nanocrystal, adsorbed onto, or otherwise associated with the surface of the semiconductor nanocrystal.Type: GrantFiled: July 1, 2014Date of Patent: May 8, 2018Assignees: Western Washington University, University of Washington through its Center for CommercializationInventors: David Patrick, John Gilbertson, Stephen McDowall, Christian Erickson, Daniel R. Gamelin, Liam Bradshaw, Emily Jane McLaurin, Kathryn E. Knowles
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Patent number: 9735387Abstract: An organic light emitting display includes: a substrate; a first electrode on the substrate; an organic light emitting layer on the first electrode; a second electrode formed on the organic light emitting layer; a non-resonance reflection inducing layer on the second electrode; and a capping layer on the non-resonance reflection inducing layer.Type: GrantFiled: September 23, 2016Date of Patent: August 15, 2017Assignee: Samsung Display Co., Ltd.Inventors: Nam Su Kang, Ji Hye Shim, Ji Hwan Yoon, Chang Ho Lee, Hyun Ju Choi
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Patent number: 9735544Abstract: A surface emitting laser element includes: a semiconductor structure layer interposed between a first multi-layer reflector and a second multi-layer reflector; an insulating current confinement layer that is formed on a semiconductor layer of a second conductivity type and includes a first through-hole with a transparent electrode; the second multi-layer reflector formed on the current confinement layer and the transparent electrode; a heat conducting layer that is formed on the second multi-layer reflector and includes a second through-hole disposed coaxially with the first through-hole in the current confinement layer and having a minimum opening diameter smaller than an opening diameter of the first through-hole; and an emission color converting portion that is formed above the second through-hole in the heat conducting layer and includes phosphor.Type: GrantFiled: October 21, 2016Date of Patent: August 15, 2017Assignee: STANLEY ELECTRIC CO., LTD.Inventors: Komei Tazawa, Ji-Hao Liang
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Patent number: 9601647Abstract: The present invention includes upconversion materials such as lanthanide-sensitized oxides that are useful for converting low-energy photons into high-energy photons. Because silicon-based solar cells have an intrinsic optical band-gap of 1.1 eV, low-energy photons having a wavelength longer than 1100 nm, e.g., infrared photons, cannot be absorbed by the solar cell and used for photovoltaic energy conversion. Only those photons that have an energy equal to or greater than the solar cell's band gap, e.g., visible photons, can be absorbed and used for photovoltaic energy conversion. The oxides described herein transform photons having an energy less than the energy of a solar cell's band gap into photons having an energy equal to or greater than the energy of the band gap. When these oxides are incorporated into a solar cell, they provide more photons for photovoltaic energy conversion than otherwise would be available in their absence.Type: GrantFiled: May 15, 2014Date of Patent: March 21, 2017Assignee: The Chinese University of Hong KongInventors: Jianfang Wang, Junxin Wang, Tian Ming
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Patent number: 9525264Abstract: A system and method for generating a burst of ultra-short, high-power laser pulses, the system includes elements for generating laser pulses having a repetition period ?1, amplification elements including an optical amplifier medium, a regenerative optical cavity, elements for injecting the laser pulses into the regenerative optical cavity, and elements for extracting the laser pulses from the regenerative optical cavity. The regenerative optical cavity has a total length such that the duration of a round trip of each pulse is between N?1 and N times the period ?1, wherein N is an integer higher than or equal to 2, the injection elements are adapted for trapping a burst of N laser pulses in the regenerative optical cavity, the extraction elements are suitable to extract the burst of N laser pulses from the regenerative optical cavity, and the optical amplifier medium is suitable for forming a burst of amplified laser pulses.Type: GrantFiled: December 4, 2013Date of Patent: December 20, 2016Assignee: AMPLITUDE SYSTEMESInventor: Antoine Courjaud
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Patent number: 9466816Abstract: An organic light emitting display includes: a substrate; a first electrode on the substrate; an organic light emitting layer on the first electrode; a second electrode formed on the organic light emitting layer; a non-resonance reflection inducing layer on the second electrode; and a capping layer on the non-resonance reflection inducing layer.Type: GrantFiled: March 16, 2015Date of Patent: October 11, 2016Assignee: Samsung Display Co., Ltd.Inventors: Nam Su Kang, Ji Hye Shim, Ji Hwan Yoon, Chang Ho Lee, Hyun Ju Choi
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Patent number: 9329338Abstract: The present invention discloses a full-polarization-state power distributor with integer ratio of power distribution based on photonic crystal waveguide which comprises a photonic crystal waveguide formed in a photonic crystal with a complete photonic band-gap, and the photonic crystal consists of background dielectric rod array; the photonic crystal waveguide consists of a transverse waveguide and a perpendicular waveguide perpendicularly connected with the transverse waveguide; one end of the transverse waveguide is an input end, and the other end is an output end; the perpendicular waveguide is another output end; and the middle part of the transverse waveguide is provided with waveguide defect dielectric rods.Type: GrantFiled: August 12, 2013Date of Patent: May 3, 2016Inventors: Zhengbiao Ouyang, Xin Jin
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Patent number: 9303209Abstract: A light emitting photonic bandgap (PBG) material, and devices uses the same, having (a) a polymer network exhibiting a non-uniform pitch; (b) a small molecule liquid crystal material with a birefringence>0.04; and (c) one or more light emitting dyes having a low triplet state absorption. The light emitting PBG material has a defect-induced density of states enhancing feature at a wavelength that overlaps the emission spectrum of the light emitting dye. Excitation of the light emitting PBG material by a light source causes a directional electromagnetic emission from the light emitting material. The PBG material, and device, are capable of emitting continuous wave laser light as a result of excitation by a low-power incoherent light source.Type: GrantFiled: July 11, 2013Date of Patent: April 5, 2016Assignee: ALPHAMICRON INCORPORATEDInventors: Antonio Munoz, Tamas Kosa, Paul Luchette, Ludmila Sukhomlinova, Bahman Taheri
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Patent number: 9219343Abstract: A crystal capture housing (housing) for cooling an optical device including a crystal having optical end faces and non-optical faces spanning a length between the optical end faces. An outer housing body (body) has end openings and a crystal mount assembly (CMA) includes a thermally conductive material having end openings connected to an internal opening sized to mount the crystal therein. The CMA thermally contacts each of the non-optical faces of said crystal. The CMA includes a plurality of embedded liquid coolant conduit channels (coolant channels) formed therethrough spanning the length, and the CMA is sized to fit within the body and provide an air gap between the CMA and the body.Type: GrantFiled: June 17, 2015Date of Patent: December 22, 2015Assignee: GOOCH AND HOUSEGO PLCInventors: Robert W. Dew, Carl D. Brunetta, Thomas E. Stenger, Gary C. Catella