Particular Active Media Patents (Class 372/39)
  • Patent number: 10227492
    Abstract: 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: Grant
    Filed: August 31, 2017
    Date of Patent: March 12, 2019
    Assignee: StoreDot Ltd.
    Inventors: Mor Shmuel Armon, Elad Cohen, Evgenia Liel (Jeny) Kuks, Rony Schwarz, Eran Sella, Daniel Szwarcman
  • Patent number: 10164398
    Abstract: 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: Grant
    Filed: September 22, 2015
    Date of Patent: December 25, 2018
    Assignee: University of Rochester
    Inventors: John R. Marciante, Haomin Yao
  • Patent number: 10135032
    Abstract: 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: Grant
    Filed: February 4, 2010
    Date of Patent: November 20, 2018
    Assignee: UDC IRELAND LIMITED
    Inventors: Satoshi Aiba, Toshiro Takahashi
  • Patent number: 10054730
    Abstract: 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: Grant
    Filed: February 20, 2017
    Date of Patent: August 21, 2018
    Assignee: LG INNOTEK CO., LTD.
    Inventors: June Roh, Kyung Jin Kim, Ja Ram Kim, Jae Hong Lee, Soon Young Hyun
  • Patent number: 10056020
    Abstract: 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: Grant
    Filed: October 13, 2016
    Date of Patent: August 21, 2018
    Assignee: Oculus VR, LLC
    Inventors: Wanli Chi, Pasi Saarikko, Hee Yoon Lee
  • Patent number: 9964680
    Abstract: 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: Grant
    Filed: July 1, 2014
    Date of Patent: May 8, 2018
    Assignees: Western Washington University, University of Washington through its Center for Commercialization
    Inventors: David Patrick, John Gilbertson, Stephen McDowall, Christian Erickson, Daniel R. Gamelin, Liam Bradshaw, Emily Jane McLaurin, Kathryn E. Knowles
  • Patent number: 9735387
    Abstract: 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: Grant
    Filed: September 23, 2016
    Date of Patent: August 15, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Nam Su Kang, Ji Hye Shim, Ji Hwan Yoon, Chang Ho Lee, Hyun Ju Choi
  • Patent number: 9735544
    Abstract: 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: Grant
    Filed: October 21, 2016
    Date of Patent: August 15, 2017
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventors: Komei Tazawa, Ji-Hao Liang
  • Patent number: 9601647
    Abstract: 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: Grant
    Filed: May 15, 2014
    Date of Patent: March 21, 2017
    Assignee: The Chinese University of Hong Kong
    Inventors: Jianfang Wang, Junxin Wang, Tian Ming
  • Patent number: 9525264
    Abstract: 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: Grant
    Filed: December 4, 2013
    Date of Patent: December 20, 2016
    Assignee: AMPLITUDE SYSTEMES
    Inventor: Antoine Courjaud
  • Patent number: 9466816
    Abstract: 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: Grant
    Filed: March 16, 2015
    Date of Patent: October 11, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Nam Su Kang, Ji Hye Shim, Ji Hwan Yoon, Chang Ho Lee, Hyun Ju Choi
  • Patent number: 9329338
    Abstract: 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: Grant
    Filed: August 12, 2013
    Date of Patent: May 3, 2016
    Inventors: Zhengbiao Ouyang, Xin Jin
  • Patent number: 9303209
    Abstract: 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: Grant
    Filed: July 11, 2013
    Date of Patent: April 5, 2016
    Assignee: ALPHAMICRON INCORPORATED
    Inventors: Antonio Munoz, Tamas Kosa, Paul Luchette, Ludmila Sukhomlinova, Bahman Taheri
  • Patent number: 9219343
    Abstract: 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: Grant
    Filed: June 17, 2015
    Date of Patent: December 22, 2015
    Assignee: GOOCH AND HOUSEGO PLC
    Inventors: Robert W. Dew, Carl D. Brunetta, Thomas E. Stenger, Gary C. Catella
  • Patent number: 9182600
    Abstract: An image display apparatus includes a plurality of light source sections, a light combining section that combines light fluxes, an optical scan section that swings around a first axis and a second axis to deflect a combined light from the light combining section for scanning, and a controller that controls an amplitude of the optical scan section around the first axis to be greater than that of the optical scan section around the second axis, wherein an optical axis of each of the light fluxes from the plurality of light source sections to the optical scan section and the first axis are present in a first plane, the optical scan section has a light reflection surface configured to be perpendicular to the first plane, and the light reflection surface is irradiated with the combined light and traveling in a direction inclined to a normal to the light reflection surface.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: November 10, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Daisuke Ishida, Masatoshi Yonekubo
  • Patent number: 9124071
    Abstract: To realize a nitride semiconductor laser element having improved internal quantum efficiency.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: September 1, 2015
    Assignee: NICHIA CORPORATION
    Inventor: Shingo Masui
  • Patent number: 9077137
    Abstract: A laser assembly (12) for providing an output beam (18) includes a gain medium (16) and a laser housing (20) that retains the gain medium (16). The gain medium (16) generates the output beam (18) when electrical power is directed to the gain medium (16). The laser housing (20) includes a reference redirector (20A) that is used to a reference datum to check the alignment of the output beam (18) relative to the laser housing (20). The reference redirector (20A) can be a mirror that is integrated into the laser housing.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: July 7, 2015
    Assignee: DAYLIGHT SOLUTIONS, INC.
    Inventor: Jeremy A. Rowlette
  • Patent number: 9057832
    Abstract: A method for fabricating an optical modulator includes forming n-type layer, a first oxide portion on a portion of the n-type layer, and a second oxide portion on a second portion of the n-type layer, patterning a first masking layer over the first oxide portion, portions of a planar surface of the n-type layer, and portions of the second oxide portion, implanting p-type dopants in the n-type layer to form a first p-type region and a second p-type region, removing the first masking layer, patterning a second masking layer over the first oxide portion, a portion of the first p-type region, and a portion of the n-type layer, and implanting p-type dopants in exposed portions of the n-type layer, exposed portions of the first p-type region, and regions of the n-type layer and the second p-type region disposed between the substrate and the second oxide portion.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: June 16, 2015
    Assignee: International Business Machines Corporation
    Inventors: William M. Green, Jessie C. Rosenberg, Yurii Vlasov
  • Patent number: 9048628
    Abstract: The challenge of providing a long-life solid-state dye laser medium is tackled. This challenge is solved by a solid-state dye laser medium comprising a polydimethylsiloxane, and a dye dissolved in the polydimethylsiloxane. The dye is preferably a pyrromethene dye.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: June 2, 2015
    Assignee: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Hiroaki Yoshioka, Yuji Oki, Yu Yang
  • Patent number: 8995490
    Abstract: An edge-emitting semiconductor laser diode includes an epitactic semiconductor layer stack and a planarization layer. The semiconductor layer stack includes a main body and a ridge waveguide. The main body includes an active layer for generating electromagnetic radiation. The planarization layer embeds the ridge waveguide such that a surface of the ridge waveguide and a surface of the planarization layer form a flat main surface. A method for producing such a semiconductor laser diode is also disclosed.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: March 31, 2015
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventors: Alfred Lell, Christoph Nelz, Christian Rumbolz, Stefan Hartauer
  • Patent number: 8971373
    Abstract: Nanolaser for generating coherent electromagnetic radiation, comprising at least one nanoparticle of metal, preferably silver, or semiconductor, at least one exciting element, preferably a quantum dot, for exciting plasmon resonance of the at least one nanoparticle, wherein the at least one nanoparticle and the at least one exciting element are embedded in a matrix of Photonic or Polaritonic Band-gap (PGB)-material, preferably Silica Carbide (SiC).
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: March 3, 2015
    Assignee: King Saud University
    Inventor: Talal Ghannam
  • Patent number: 8955987
    Abstract: A light emitting device includes a substrate, a laminated body formed by stacking a first cladding layer, a first active layer, a second cladding layer, a third cladding layer, a second active layer, and a fourth cladding layer on the substrate in this order, a first electrode connected to the first cladding layer, a second electrode connected to the second cladding layer and the third cladding layer, and a third electrode connected to the fourth cladding layer, the first active layer generates first light using the first electrode and the second electrode, the second active layer generates second light using the second electrode and the third electrode, and a side surface of the first active layer is provided with an emitting section for emitting the first light, and a side surface of the second active layer is provided with an emitting section for emitting the second light.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: February 17, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Masamitsu Mochizuki
  • Patent number: 8929415
    Abstract: Photonic crystal cavities and related devices and methods are described. The described cavities can be used as lasers, photovoltaic sources, and single photon sources. The cavities can be both optically and electrically pumped. A fabrication process of the cavities is also described.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: January 6, 2015
    Assignee: California Institute of Technology
    Inventors: Seheon Kim, Axel Scherer
  • Patent number: 8929417
    Abstract: A semiconductor interband laser that includes a first cladding layer formed using a first high-doped semiconductor material having a first refractive index/permittivity and a second cladding layer formed using a second high-doped semiconductor material having a second refractive index/permittivity. The laser also includes a waveguide core having a waveguide core refractive index/permittivity, the waveguide core is positioned between the first and the second cladding layers. The waveguide core including an active region adapted to generate light based on interband transitions. The light being generated defines the lasing wavelength or the lasing frequency. The first refractive index and the second refractive index are lower than the waveguide core refractive index. The first cladding layer and/or the second cladding layers can also be formed using a metal.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: January 6, 2015
    Assignee: The Board of Regents of the University of Oklahoma
    Inventors: Rui Q. Yang, Tetsuya Mishima, Michael B. Santos, Zhaobing Tian, Matthew B. Johnson, Robert T. Hinkey
  • Publication number: 20140371106
    Abstract: The invention provides light-emitting compositions, including lasing and fluorescent compositions. The invention particularly relates to programmable biological substrates, which fluoresce and/or lase, and which have a wide variety of different applications. The invention extends to use of the fluorescent compositions and lasing compositions comprising programmable biological substrates in fabricating lasers, and in various biological imaging applications, such as in assays.
    Type: Application
    Filed: December 21, 2012
    Publication date: December 18, 2014
    Applicant: UCL BUSINESS PLC
    Inventors: John Edward Hales, John Ward, Gabriel Aeppli, Tim Dafforn
  • Patent number: 8848751
    Abstract: A master oscillator power amplifier (MOPA) system includes an oscillator having a neodymium-doped gadolinium vanadate gain-medium and delivering seed-pulses. A length of single mode fiber is used to broaden the spectrum of the seed pulse. An amplifier having a neodymium-doped yttrium vanadate gain-medium amplifies the spectrally broadened seed-pulses. The gain-spectrum of the amplifier partially overlaps the broadened pulse-spectrum, providing spectral selection of the seed-pulses in addition to amplification. This provides amplified output-pulses having a duration about one-third that of the corresponding seed-pulses.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: September 30, 2014
    Assignee: Coherent GmbH
    Inventor: Stefan Spiekermann
  • Patent number: 8837541
    Abstract: In one embodiment, the instant invention is an optical structure that includes: an optical active medium of a solid state laser, where the optical active medium has a first coefficient of thermal expansion; and a protective structure that is directly cladded a portion of the optical active medium, where the protective structure has a second coefficient of thermal expansion which matches the first coefficient of thermal expansion of the optical active medium, and where the protective structure is transparent to a wavelength that is within an absorption band of the optical active medium so that the optical structure has: the optical active medium that is protected from a physical damage, and the optical active medium that is capable of generating a laser beam having a first energy that is larger than a second energy generated by a control optical structure having the optical active medium without the protective structure.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: September 16, 2014
    Assignee: Light Age, Inc.
    Inventors: Burton E. Sarnoff, Donald Heller, Jerzy Krasinski
  • Patent number: 8831060
    Abstract: The invention relates to a laser (1) for emitting laser light in the visible spectral range. A rare earth doped anisotropic crystal (2) comprising a 5d-4f transition is arranged within a laser resonator (7, 8), and a pumping light source (3) pumps the crystal (2) for generating laser light in the visible spectral range by using the 5d-4f transition. The 5d-4f transition of the rare earth doped anisotropic crystal comprises an absorption band extending over several nm. Thus, pump light having a wavelength within a relatively broad wavelength range can be used. This reduces the requirements with respect to the wavelength accuracy of the pumping light source and, thus, more pumping light sources of an amount of produced pumping light sources can be used for assembling the laser, thereby reducing the amount of rejects.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: September 9, 2014
    Assignee: Koninklijke Philips N.V.
    Inventors: Ulrich Weichmann, Matthias Alexander Wilhelm Fechner, Fabian Reichert, Herbert Walter Klaus Petermann, Gunter Huber
  • Patent number: 8817834
    Abstract: Methods and systems for I/Q mismatch calibration and compensation for wideband communication receivers may comprise receiving a plurality of radio frequency (RF) channels, downconverting the received plurality of received RF channels to baseband frequencies, determining and removing average in-phase (I) and quadrature (Q) gain and phase mismatch of the downconverted channels, determining a residual phase and amplitude tilt of the downconverted channels with removed average I and Q gain and phase mismatch, and compensating for said residual phase and amplitude tilt I and Q gain and phase mismatch of the downconverted channels. The determined phase tilt may be compensated utilizing a phase tilt correction filter, which may comprise one or more all-pass filters. The average I and Q gain and phase mismatch may be determined utilizing a blind source separation (BSS) estimation algorithm.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: August 26, 2014
    Assignee: Maxlinear, Inc.
    Inventors: Yongtao Wang, Curtis Ling, Tim Gallagher
  • Patent number: 8787416
    Abstract: Provided are a laser diode using zinc oxide nanorods and a manufacturing method thereof. The laser diode using zinc oxide nanorods according to one embodiment of the present disclosure includes: a wafer; an electrode layer formed on the wafer; a nanorod layer including a plurality of n-doped zinc oxide nanorods grown on the electrode layer; and a p-doped single crystal semiconductor layer that is physically in contact with the ends of the zinc oxide nanorods.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: July 22, 2014
    Assignee: Dongguk University Industry-Academic Cooperation Foundation
    Inventors: Sang Wuk Lee, Tae Won Kang, Gennady Panin, Hak Dong Cho
  • Publication number: 20140198317
    Abstract: A laser apparatus comprises a pump laser device, and a polarizing optical fiber having a proximal end and a distal end, with the polarizing optical fiber coupled to the pump laser device at the proximal end. At least one output reflector is written on the polarizing optical fiber toward the distal end. Only one polarization mode is supported when a laser beam is transmitted through the polarizing optical fiber from the pump laser device.
    Type: Application
    Filed: January 13, 2013
    Publication date: July 17, 2014
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Tiequn Qiu, Steven J. Sanders
  • Patent number: 8761212
    Abstract: A method for operating a laser device, which has a laser-active solid-state body including a preferably passive Q switch, in which pumped light is applied to the laser device in order to generate a laser pulse. The laser device and/or an optical link between the laser device and a pumped light source supplying the pumped light is at least partially acted upon by an optical test pulse in order to check the integrity of a/the optical link between the laser device and a pumped light source supplying the pumped light.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: June 24, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Martin Weinrotter, Pascal Woerner, Manfred Vogel, Juergen Raimann, Bernd Schmidtke, Heiko Ridderbusch
  • Publication number: 20140133513
    Abstract: A laser device including a laser crystal, a first lens, an induced light source, a third light source and a second lens and a method for generating a laser light are disclosed. The laser crystal includes a gain medium, a first cross section and a second cross section. The first lens is located on the first cross section of the laser crystal. The induced light source is adapted to generate an induced light entering into the laser crystal through the first lens. The third light source is adapted to generate a third light which is adapted for emitting the laser crystal. The third light and the induced light are adapted to induce the liquid crystal to make the liquid crystal generate a first light and a second light.
    Type: Application
    Filed: December 20, 2012
    Publication date: May 15, 2014
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Shih-Ting LIN, Chih-Lin WANG, Yao-Wun JHANG, Chieh HU, Hong-Xi TSAU
  • Patent number: 8705586
    Abstract: To suppress the amplification of spontaneous emission light in a principal plane width direction to thereby suppress a gain in directions other than a beam axis direction and output a high-power laser, in a solid-state laser element of a plane waveguide type that causes a fundamental wave laser beam to oscillate in a beam axis direction in a laser medium of a flat shape and forms a waveguide structure in a thickness direction as a direction perpendicular to a principal plane of the flat shape in the laser medium, inclined sections 12 are provided on both sides of the laser medium, the inclined sections 12 inclining a predetermined angle to reflect spontaneous emission light in the laser medium to a principal plane side of the flat shape, the spontaneous emission light traveling in the beam axis direction and a principal plane width direction as a direction perpendicular to the thickness direction.
    Type: Grant
    Filed: August 30, 2007
    Date of Patent: April 22, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shuhei Yamamoto, Takayuki Yanagisawa, Yasuharu Koyata, Yoshihito Hirano
  • Publication number: 20140079084
    Abstract: A system, apparatus and method employing a laser with a split-head, V-assembly gain material configuration. Additionally, the present invention is directed to techniques to better dissipate or remove unwanted energies in laser operations. The present invention is also directed to techniques for better collimated laser beams, with single spatial mode quality (TEM00), with improved efficiency, in extreme environments, such as in outer space.
    Type: Application
    Filed: September 19, 2012
    Publication date: March 20, 2014
    Inventors: Donald B. Coyle, Paul R. Stysley, Demetrios Poulios
  • Publication number: 20140056321
    Abstract: An optical amplifier receives a seed laser having a wavelength of 1064 nm. Amplification occurs in a segmented Nd:YVO4 gain medium pumped with a pump source. Each segment of the gain medium has a length and dopant concentration and together the segments enhance power absorption in the gain medium enabling use of a higher power end pump which increases pulse energy and average power of the laser. The first end of the gain medium includes a wedge surface which arranges a quad-pass optical amplifier to achieve high extraction efficiency.
    Type: Application
    Filed: August 22, 2012
    Publication date: February 27, 2014
    Inventor: XIAOYUAN PENG
  • Patent number: 8660163
    Abstract: An optical amplifier suitable for coherently amplifying surface plasmon-polariton waves with high gain and low noise over visible and infrared wavelengths. The optical amplifier is comprised of a thin strip of material having a complex permittivity with a negative real part, in contact on at least one side with an optical gain medium, where the strip has finite width and thickness such that optical radiation couples to the strip and propagates along its length as a surface plasmon-polariton wave. The surface plasmon-polariton amplifier can also be incorporated into a resonant cavity to form a plasmon-polariton laser.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: February 25, 2014
    Assignee: University of Ottawa
    Inventors: Israel DeLeon, Pierre Berini
  • Patent number: 8654806
    Abstract: A first device is provided. The device includes an organic semiconductor laser. The organic semiconductor laser further includes an optical cavity and an organic layer disposed within the optical cavity. The organic layer includes: an organic host compound; an organic emitting compound capable of fluorescent emission; and an organic dopant compound. The organic dopant compound may also be referred to herein as a “triplet manager.” The triplet energy of the organic dopant compound is lower than or equal to the triplet energy of the organic host compound. The triplet energy of the organic dopant compound is lower than or equal to the triplet energy of the organic emitting compound. The singlet energy of the organic emitting compound is lower than or equal to the singlet energy of the organic host compound.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: February 18, 2014
    Assignee: The Regents of the University of Michigan
    Inventors: Stephen R. Forrest, Yifan Zhang
  • Patent number: 8620164
    Abstract: Described herein is a hybrid III-V Silicon laser comprising a first semiconductor region including layers of semiconductor materials from group III, group IV, or group V semiconductor to form an active region; and a second semiconductor region having a silicon waveguide and bonded to the first semiconductor region via direct bonding at room temperature of a layer of the first semiconductor region to a layer of the second semiconductor region.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: December 31, 2013
    Assignee: Intel Corporation
    Inventors: John Heck, Hanan Bar, Richard Jones, Hyundai Park
  • Publication number: 20130336345
    Abstract: There is disclosed a femtosecond laser apparatus including a first laser material comprising Ng, Np and Nm axes spatially perpendicular to each other; a second laser material comprising Np axis, Nm axis and Ng axis; and a first laser diode and second laser diodes, wherein the traveling direction of laser beams generated from the first and second laser materials is substantially parallel to Ng axis of the first laser material and the polarizing direction of laser beams generated from the first and second laser materials is substantially parallel to Np axis of the first laser material, and the traveling direction of laser beams generated from the first and second laser materials is substantially parallel to Np axis of the second material and the polarizing direction of laser beams generated from the first and second laser materials is substantially parallel to Nm axis of the second laser material.
    Type: Application
    Filed: January 29, 2013
    Publication date: December 19, 2013
    Applicant: Korea Electrotechnology Research Institute
    Inventors: Guang Hoon Kim, Uk Kang, Ju Hee Yang, Dae Sik Lee, Elena Sall, Sergey Chizhov, Andrey Kulik, Vladimir Yashin
  • Publication number: 20130287052
    Abstract: In one embodiment, the instant invention is an optical structure that includes: an optical active medium of a solid state laser, where the optical active medium has a first coefficient of thermal expansion; and a protective structure that is directly cladded a portion of the optical active medium, where the protective structure has a second coefficient of thermal expansion which matches the first coefficient of thermal expansion of the optical active medium, and where the protective structure is transparent to a wavelength that is within an absorption band of the optical active medium so that the optical structure has: the optical active medium that is protected from a physical damage, and the optical active medium that is capable of generating a laser beam having a first energy that is larger than a second energy generated by a control optical structure having the optical active medium without the protective structure.
    Type: Application
    Filed: April 25, 2012
    Publication date: October 31, 2013
    Inventors: Burton E. Sarnoff, Donald Heller, Jerzy Krasinski
  • Patent number: 8532150
    Abstract: Techniques and devices for generating laser light that use large mode area fiber amplifiers and designed coiling fiber sections to achieve desired operations in a fundamental fiber mode with high pulse quality and optical beam quality while reducing presence of high order fiber modes in continuous wave (CW) and pulsed laser devices.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: September 10, 2013
    Assignee: Calmar Optcom, Inc.
    Inventors: Sha Tong, Jerry Prawiharjo, Anthony Hong Lin
  • Patent number: 8526475
    Abstract: Disclosed are the use of phosphate-based glasses as a solid state laser gain medium, in particular, the invention relates to broadening the emission bandwidth of rare earth ions used as lasing ions in a phosphate-based glass composition, where the broadening of the emission bandwidth is believed to be achieved by the hybridization of the glass network.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: September 3, 2013
    Assignee: Schott Corporation
    Inventors: Hong Li, Sally Pucilowski, Joseph S. Hayden
  • Patent number: 8514901
    Abstract: Embodiments of silicon-based thermal energy transfer apparatus for gain medium crystal of a laser system are provided. For a disk-shaped crystal, the apparatus includes a silicon-based manifold and a silicon-based cover element. For a rectangular cuboid-shaped gain medium crystal, the apparatus includes a first silicon-based manifold, a second silicon-based manifold, and first and second conduit elements coupled between the first and second manifolds. For a right circular cylinder-shaped gain medium crystal, the apparatus includes a first silicon-based manifold, a second silicon-based manifold, and first and second conduit elements coupled between the first and second manifolds.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: August 20, 2013
    Inventor: Gerald Ho Kim
  • Patent number: 8509269
    Abstract: Cylindrical optical components of quartz glass are known, which have an inner zone made of an inner zone glass, which extends in the direction of the longitudinal axis and is surrounded by a jacket zone made of a jacket zone glass, the average wall thickness thereof varying at least over a part of its length in the direction of the longitudinal axis of the component. The aim of the invention is to provide a method that allows a simple and cost-effective production of such an optical component from quartz glass.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: August 13, 2013
    Assignee: Heraeus Quarzglas GmbH & Co. KG
    Inventors: Peter Bauer, Karsten Braeuer, Marco Flach, Andreas Langner, Richard Schmidt, Clemens Schmitt, Gerhard Schoetz, Matthias Stecher
  • Patent number: 8494021
    Abstract: To provide a small and lightweight organic laser device which can be manufactured in a reproductive manner and from which laser light with a desired wavelength can be obtained. A first substrate provided with a light-emitting element having a light-emitting layer between a pair of electrodes and a second substrate provided with a laser medium including a laser dye face each other and one of the pair of electrodes, which is placed between the light-emitting layer and the laser medium, has a light transmitting property. With such a structure, a laser device with which a laser medium and a light source are integrated can be provided.
    Type: Grant
    Filed: August 20, 2009
    Date of Patent: July 23, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Mikio Yukawa, Tetsuo Tsutsui
  • Patent number: 8488641
    Abstract: Light sources are disclosed. A disclosed light source includes a III-V based pump light source (170) that includes nitrogen and emits light at a first wavelength. The light source further includes a vertical cavity surface emitting laser (VCSEL) that converts at least a portion of the first wavelength light (174) emitted by the pump light source (170) to at least a partially coherent light at a second wavelength (176). The VCSEL includes first and second mirrors (120, 160) that form an optical cavity for light at the second wavelength. The first mirror (120) is substantially reflective at the second wavelength and includes a first multilayer stack. The second mirror (160) is substantially transmissive at the first wavelength and partially reflective and partially transmissive and the second wavelength. The second mirror includes a second multilayer stack.
    Type: Grant
    Filed: August 18, 2009
    Date of Patent: July 16, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Michael A. Haase, Thomas J. Miller, Xiaoguang Sun
  • Patent number: 8467426
    Abstract: A system and method for cooling an optical fiber includes a flexible heat sink member, a heat pipe evaporator, and a thermal storage medium. The flexible heat sink member is in thermal contact with the optical fiber. The heat pipe evaporator is configured to dissipate heat from the optical fiber. The thermal storage medium is in thermal contact with the flexible heat sink member and the heat pipe evaporator. The flexible heat sink member is configured to compensate for any mismatch in coefficient of thermal expansion between material of the optical fiber and material of the flexible heat sink member so as to provide radial compliance and to maintain direct thermal contact between the optical fiber and the flexible heat sink member.
    Type: Grant
    Filed: October 7, 2010
    Date of Patent: June 18, 2013
    Assignee: Raytheon Company
    Inventors: Joseph Ichkhan, John Schroeder, David A. Rockwell
  • Publication number: 20130128908
    Abstract: A unique physical design of 532 nm Diode Pumped Solid State (DPSS) laser elements to achieve independent crystal phasing (rotation), spacing and output coupler (OC) alignment in a robust small package is provided.
    Type: Application
    Filed: November 19, 2012
    Publication date: May 23, 2013
    Applicant: LASER ENERGETICS INC.
    Inventor: Laser Energetics Inc.
  • Publication number: 20130100976
    Abstract: In one general embodiment, a thin film structure includes a substrate; a first corrosion barrier layer above the substrate; a reflective layer above the first corrosion barrier layer, wherein the reflective layer comprises at least one repeating set of sub-layers, wherein one of the sub-layers of each set of sub-layers being of a corrodible material; and a second corrosion barrier layer above the reflective layer. In another general embodiment, a system includes an optical element having a thin film structure as recited above; and an image capture or spectrometer device. In a further general embodiment, a laser according to one embodiment includes a light source and the thin film structure as recited above.
    Type: Application
    Filed: October 24, 2011
    Publication date: April 25, 2013
    Applicant: LAWRENCE LIVERMORE NATIONAL SECURITY, LLC
    Inventors: Regina Soufli, Monica Fernandez-Perea, Jeff C. Robinson