Opto-optical Device Patents (Class 359/244)
  • Patent number: 10884315
    Abstract: An integrated optical transmission element may be provided. The integrated optical transmission element includes an optical cavity including an input port and an output port, and photorefractive material within the optical cavity. A transmission of light from the input port to the output port is persistently changeable by an optical control signal provided to the photorefractive material, the optical control signal being configured to change a refractive index.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: January 5, 2021
    Assignee: International Business Machines Corporation
    Inventors: Stefan Abel, Paul F. Seidler
  • Patent number: 10488590
    Abstract: Various polarization rotator splitter (PRS) configurations are disclosed. In an example embodiment, a system includes a PRS that includes a silicon nitride (SiN) rib waveguide core that includes a rib and a ridge that extends vertically above the rib, the SiN rib waveguide core having a total height hSiN from a bottom of the rib to a top of the ridge, a rib height hrib from the bottom of the rib to a top of the rib, a rib width wrib, and a top width wSiN of the ridge. The rib width wrib varies along at least a portion of a length of the SiN rib waveguide core.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: November 26, 2019
    Assignee: Finisar Corporation
    Inventors: Bryan Park, Zheng Yong, Joyce Kai See Poon
  • Patent number: 10479988
    Abstract: A method of producing attenuated cells for a mammalian vaccine comprising killing or attenuating the cells with a high energy, low heat UV light.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: November 19, 2019
    Assignee: LUMAGENICS, LLC
    Inventor: Kurt A. Garrett
  • Patent number: 10423011
    Abstract: A lens includes a lens body, and an electro-active section (liquid crystals and a diffraction section) that is provided to a region of part of the lens body. The lens includes a pair of electrodes that are embedded in the lens body, that are electrically connected to a focal length modification section, that extend downward from an upper side end of the lens body, and that are disposed substantially parallel to each other spaced apart in a width direction orthogonal to an up-down direction of the lens body. Lower ends of the pair of electrodes are disposed spaced apart from the electro-active section in the up-down direction of the lens body.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: September 24, 2019
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Ronald D. Blum, Sophie Adams, David Boyd, Richard Clompus, Mark Graham, Joshua Haddock, Robert Hall, Venki Iyer, William Kokonaski, Charles Willey, Yongping Wang, Claudio Dalla Longa, Tsuyoshi Kamibeppu, Akifumi Aono, Akihiro Muramatsu
  • Patent number: 10338454
    Abstract: An optical clock generator includes a nonlinear cavity unit, a cross-waveguide logic gate unit and a delayer unit; and is of a six-port photonic crystal structure including two reference-light signal-input ports, a feedback-signal-input port, a system-signal and feedback-signal output port and two idle ports; the output port of the cross-waveguide logic gate unit is connected with the input port of the nonlinear cavity unit whose system-signal output port is connected with the input port of said delayer unit whose output port is connected with the input port of the cross-waveguide logic gate unit, the system-signal output port is connected with a two-branch waveguide one of which is used as the system-signal output port, and another is used as the feedback-signal output port and connected to an input port of said delayer unit, the delayer unit performs time delay on an input signal and outputs the signal to the feedback-signal-input port.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: July 2, 2019
    Inventor: Zhengbiao Ouyang
  • Patent number: 10295469
    Abstract: The invention provides a temporal focusing-based multiphoton excitation fluorescence microscopy system capable of tunable-wavelength excitation and an excitation wavelength selection module thereof. The temporal focusing-based multiphoton excitation fluorescence microscopy system comprises: an excitation light generating module for generating excitation light; an excitation wavelength selection module for generating reflected light having a predetermined output angle in accordance with the wavelength of the excitation light and generating detecting excitation light through a diffraction unit; and a fluorescent microscope.
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: May 21, 2019
    Assignee: NATIONAL CENTRAL UNIVERSITY
    Inventors: Fan-Ching Chien, Chi-Hsiang Lien
  • Patent number: 10269580
    Abstract: A subtractive forming method that includes providing a material stack including a samarium and selenium containing layer and an aluminum containing layer in direct contact with the samarium and selenium containing layer. The samarium component of the samarium and selenium containing layer of the exposed portion of the material stack is etched with an etch chemistry comprising citric acid and hydrogen peroxide that is selective to the aluminum containing layer. The hydrogen peroxide reacts with the aluminum containing layer to provide an oxide etch protectant surface on the aluminum containing layer, and the citric acid etches samarium selectively to the oxide etch protectant surface. Thereafter, a remaining selenium component of is removed by elevating a temperature of the selenium component.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: April 23, 2019
    Assignee: International Business Machines Corporation
    Inventors: Christine Armstrong, Matthew W. Copel, Yu Luo, Paul M. Solomon
  • Patent number: 10186767
    Abstract: A metamaterial cloak is provided for extending deflection of an electromagnetic beam for a vertical beam angle other than bore sight. The cloak deflects an electromagnetic beam from a source in an environment and includes a laminate structure and an electromagnetic guide. The structure includes a plurality of conductive metal plates and metamaterial layers sandwiched therebetween within a planar shape. The electromagnetic guide is disposed around the laminate structure to provide a frontal face to the source. The guide matches impedance of the laminate structure.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: January 22, 2019
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Kevin A. Boulais
  • Patent number: 10151858
    Abstract: Various embodiments may provide a device for providing a first optical light of a first wavelength and a second optical light of a second wavelength. The device may include a halide perovskite structure including a first pattern and a second pattern different from the first pattern, so that the first pattern is configured to provide the first optical light of the first wavelength and the second pattern is configured to provide the second optical light of a second wavelength different from the first wavelength, upon a light incident on the first pattern and the second pattern. The halide perovskite structure may include a halide perovskite material.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: December 11, 2018
    Assignee: NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Cesare Soci, Behrad Gholipour, Giorgio Adamo, Daniele Cortecchia
  • Patent number: 10133149
    Abstract: A waveguide includes an array of p-i-n junctions formed by ions implanted into the waveguide. The p-i-n junctions concentrate electric fields applied on the waveguide to convert the third order susceptibility ?(3) into the second order susceptibility ?(2) and induce the DC Kerr effect. The periodic electrical fields concentrated by the p-i-n junctions effectively create a wave vector, which together with the wave vectors of optical beams in the waveguide satisfies phase matching conditions for nonlinear optical effects. The phase matching can significantly enhance the efficiency of the nonlinear optical effects, such as second harmonic generation, sum frequency generation, difference frequency generation, and four-wave mixing. Waveguides with arrays of PIN junctions can also be used in phase modulators, amplitude modulators, and filters.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: November 20, 2018
    Assignee: Massachusetts Institute of Technology
    Inventors: Erman Timurdogan, Michael R. Watts
  • Patent number: 10113972
    Abstract: There is provided an image capture device including a narrow-band optical irradiation system including a light source, a solid-state imaging element including an array of pixels and sensitive to a predetermined range of wavelengths, and a metal thin-film filter provided in an optical path between the optical irradiation system and the solid-state imaging element, and having a periodic microstructural pattern having a period shorter than a wavelength detected by the solid-state imaging element.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: October 30, 2018
    Assignee: Sony Semiconductor Solutions Corporation
    Inventor: Sozo Yokogawa
  • Patent number: 10012851
    Abstract: An optical modulating device includes a permittivity change layer having a variable permittivity, a dielectric layer disposed on the permittivity change layer, a nanoantenna disposed on the dielectric layer, and a light-emitting structure disposed adjacent to the permittivity change layer.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: July 3, 2018
    Assignees: SAMSUNG ELECTRONICS CO., LTD., CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Seunghoon Han, Ruzan Sokhoyan, Harry Atwater, Ghazaleh Kafaie, Ragip Pala, Yu-Jung Lu, Ho Wai Lee, Yao-Wei Huang, Krishnan Thyagarajan
  • Patent number: 10001637
    Abstract: An electrowetting display device and manufacturing method thereof. The manufacturing method comprises forming pixel electrodes on a substrate, forming an insulation layer on the pixel electrodes, applying light through a mask to expose portions of the insulation layer, developing the insulation layer to at least partially remove the exposed portions of the insulation layer, wherein the developing forms a water repellent layer on the pixel electrodes and partitioning walls on the water repellent layer, and forming an oil layer between the partitioning walls and on the water repellent layer. The water repellent layer and the sides of the partitioning walls are hydrophobic. Upper surfaces of the partitioning walls are hydrophilic. The partition walls are thicker than the water repellent layer.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: June 19, 2018
    Assignee: AMAZON TECHNOLOGIES, INC.
    Inventors: Kyung Tea Park, Suk-Won Jung
  • Patent number: 9998224
    Abstract: An audio system based on an in-vehicle optical network and a broadcasting method thereof are provided. The audio system according to an exemplary embodiment includes: a multi-channel router which is connected to an in-vehicle optical network to receive a multi-channel audio signal from audio signals received from the optical network; and a plurality of speakers which are connected to the multi-channel router to receive the multi-channel audio signal through the multi-channel router. Accordingly, the speakers can operate by interworking with a network even when they have no function as network devices.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: June 12, 2018
    Assignee: KOREA ELECTRONICS TECHNOLOGY INSTITUTE
    Inventors: Sang Yub Lee, Jae Jin Ko
  • Patent number: 9939711
    Abstract: A computing apparatus has a logic unit configured to perform an arithmetic operation by relating light beams, each having a respective light amplitude, to obtain a light-based result of the operation, and to evaluate the light-based result to output a corresponding numeric result. The logic unit uses variables values, each corresponding to a respective distinct light amplitude, the variable values thereby corresponding to a plurality of distinct light amplitudes.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: April 10, 2018
    Assignee: OPEN PORTAL ENTERPRISES (OPE)
    Inventors: Marcus Aaron Smith, Joshua Norman Smith, Robert Chad McCollum
  • Patent number: 9792945
    Abstract: An apparatus includes a first storage cell with an electrical property. The first storage cell is configured to change the electrical property in response to a first light energy, and to maintain the change to the electrical property. The first storage cell is also configured to alter the change to the electrical property in response to a second light energy, and to maintain the alteration to the change to the electrical property. A second storage cell disposed over the first storage cell in a vertical plane of the first storage cell. A third storage cell disposed adjacent to the first storage cell in a horizontal plane of the first storage cell.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: October 17, 2017
    Assignee: Seagate Technology LLC
    Inventors: Joachim Ahner, David Marcus Tung
  • Patent number: 9740031
    Abstract: A thin film photonic structure that enables segregation of the effective absorption of the thin film and its intrinsic absorption while substantially eliminating bandwidth restrictions. In the form of an optical resonator, the structure includes two, multi-layer, aperiodic dielectric mirrors and a lossy, dielectric thin film and characterized by an intrinsic optical absorption over at least a one octave bandwidth. The two, multi-layer, aperiodic dielectric mirrors are characterized by a reflectivity amplitude that increases in-step with increasing wavelength over the at least one octave bandwidth. Upon a single incoherent beam of optical radiation having a spectrum over the at least one octave bandwidth incident on one side of the resonator structure, the lossy, dielectric thin film is characterized by an effective optical absorption over the at least one octave bandwidth that is greater than the intrinsic optical absorption over the at least one octave bandwidth.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: August 22, 2017
    Assignee: UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.
    Inventors: Ayman F. Abouraddy, Lorelle N. Pye, Massimo Maximilian L. Villinger, Soroush Shabahang, Walker D. Larson, Lane Martin
  • Patent number: 9612411
    Abstract: Light that returns through reflection from the optical connection portion between a semiconductor optical waveguide and an optically functional element is reduced through the use of a simplified structure in a semiconductor optical waveguide device. The device is provided with an anti-reflection diffraction grating having the period to prevent light that has been led through the semiconductor optical waveguide towards the portion connected to the optically functional element from being reflected in the direction from which the light has been led.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: April 4, 2017
    Assignees: FUJITSU LIMITED, NEC CORPORATION
    Inventors: Nobuaki Hatori, Masashige Ishizaka, Takanori Shimizu
  • Patent number: 9519067
    Abstract: A radioactive gas measurement apparatus comprises: a radiation measurement cell comprising an inlet pipe and a discharge pipe, the radiation measurement cell introducing and discharging a radioactive gas containing a nuclide to be measured and a positron emitter nuclide through the inlet pipe and the discharge pipe; a radiation detector for measuring a radiation generated from the radioactive gas; and a radiation collimator allowing the radiation measurement cell to communicate with the radiation detector and setting a predetermined radiation measurement geometry condition between the radiation measurement cell and the radiation detector. Then, as the predetermined radiation measurement geometry condition, an inner wall area of the radiation measurement cell which the radiation detector views through the radiation collimator is set equal to or less than a half of a total inner wall area of the radiation measurement cell.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: December 13, 2016
    Assignee: HITACHI, LTD.
    Inventors: Hiroshi Kitaguchi, Takahiro Tadokoro, Katsunori Ueno, Hitoshi Kuwabara
  • Patent number: 9503111
    Abstract: An atomic oscillator using a quantum interference effect, includes: a first light source unit emitting first light which includes a resonant light pair having two different wavelengths; a gas cell sealed with alkali metal atoms; a first light detection unit detecting a light intensity of the first light which is transmitted through the gas cell; a second light source unit emitting second light towards the gas cell; and a control unit changing a light intensity of the second light which is emitted from the second light source unit to compensate a change in the light intensity detected by the first light detection unit.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: November 22, 2016
    Assignee: Seiko Epson Corporation
    Inventor: Tetsuo Nishida
  • Patent number: 9354483
    Abstract: An optical limiter includes a nonlinear medium that changes its own refractive index in accordance with an intensity of incident light, and outputs the incident light in a different direction depending on the refractive index, a first incident section by which reference light with a predetermined intensity and an optical signal with a modulated intensity is made incident on the nonlinear medium, a second incident section by which auxiliary light is made incident on a portion in the nonlinear medium through which the reference light and the optical signal pass, and an inverse output section that is provided at an incident position of the reference light outputted from the nonlinear medium when the optical signal is off, and outputs an optical signal obtained by inversion of the intensity of the incident light.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: May 31, 2016
    Assignee: FUJITSU LIMITED
    Inventor: Futoshi Izumi
  • Patent number: 9266373
    Abstract: Provided is a laser imageable media that forms both a vesicular bubble image and an infrared image upon exposure to laser radiation. The laser imageable media comprises (1) a substrate, preferably a transparent plastic substrate, (2) an infrared absorbing layer comprising an infrared absorbing compound, preferably an aminium radical cation compound, that exhibits a reduction in infrared absorption when exposed to the laser radiation, and (3) a polymeric layer comprising an organic polymer, preferably nitrocellulose, overlying the infrared absorbing layer. The vesicular image on a transparent plastic substrate is readable with a visible scanner without the use of any reflective background material behind the transparent plastic substrate.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: February 23, 2016
    Assignee: OPTODOT CORPORATION
    Inventors: Steven Allen Carlson, Benjamin Sloan
  • Patent number: 9041996
    Abstract: Described is a method of controlling the absorption of light in a cavity, a system in which absorption is so controlled, and an interferometer embodying the underlying physical concept. Materials can be made to completely absorb incident light when the light is imposed in a specific pattern of illumination. Coherent perfect absorption, as the process is referred to, is achieved when a cavity is illuminated coherently and monochromatically by the time-reverse of the output of a lasing mode. Varying the parameters of the incident light and/or of the cavity allows the absorption of the incident light by the cavity to be controlled; enhanced or even reduced.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: May 26, 2015
    Assignee: Yale University
    Inventors: A. Douglas Stone, Hui Cao, Li Ge, Yidong Chong
  • Publication number: 20150124307
    Abstract: A quantum interference device includes: gaseous alkali metal atoms; and a light source for causing a resonant light pair having different frequencies that keep a frequency difference equivalent to an energy difference between two ground states of the alkali metal atoms, the quantum interference device causing the alkali metal atoms and the resonant light pair to interact each other to cause an electromagnetically induced transparency phenomenon (EIT), wherein there are a plurality of the resonant light pairs, and center frequencies of the respective resonant light pairs are different from one another.
    Type: Application
    Filed: January 2, 2015
    Publication date: May 7, 2015
    Inventors: Taku AOYAMA, Koji CHINDO
  • Patent number: 8982438
    Abstract: An apparatus includes a recording light source configured to emit recording beams, an EASLM configured to time sequentially modulate the recording beams emitted from the recording light source according to hologram information corresponding to a 3-dimensional image spatially divided into a plurality of portions, an OASLM configured to include a plurality of regions corresponding to the plurality of the divided portions of the 3-dimensional image and images on a region corresponding to the portions using the modulated recording beams to form a hologram, a scanning optical unit configured to reproduce the hologram formed by the recording beams serially modulated by the EASLM on a reduced scale and transmit the hologram to the regions of the OASLM corresponding to the portions, and a reproducing light source configured to produce a surface light and emit the surface light to the OASLM.
    Type: Grant
    Filed: October 7, 2011
    Date of Patent: March 17, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyu-hwan Choi, Hoon Song, Hong-seok Lee, Yoon-sun Choi, Jung-mok Bae, Seung-hoon Han
  • Publication number: 20150063739
    Abstract: Optical devices that include one or more structures fabricated from polar-dielectric materials that exhibit surface phonon polaritons (SPhPs), where the SPhPs alter the optical properties of the structure. The optical properties lent to these structures by the SPhPs are altered by introducing charge carriers directly into the structures. The carriers can be introduced into these structures, and the carrier concentration thereby controlled, through optical pumping or the application of an appropriate electrical bias.
    Type: Application
    Filed: October 24, 2014
    Publication date: March 5, 2015
    Applicant: Naval Research Laboratory
    Inventors: James Peter Long, Joshua D. Caldwell, Jeffrey C. Owrutsky, Orest J. Glembocki
  • Publication number: 20150049377
    Abstract: First and second coherent light beams of the same wavelength are propagated in opposite directions to interact on a sub-wavelength thickness metallic metamaterial layer which is structured with a periodicity such that there is a resonance matched to the wavelength of the coherent beams. The first beam is then able to modulate the intensity of the second beam by modulating the phase and/or intensity of the first beam. The interference of the counter- propagating beams can eliminate or substantially reduce Joule loss of light energy in the metamaterial layer or, on the contrary, can lead to a near total absorption of light, depending on the mutual phase and/or intensity of the interacting beams. A modulation is thus provided without using a non-linear effect.
    Type: Application
    Filed: March 12, 2013
    Publication date: February 19, 2015
    Inventors: Nikolay Ivanovich Zheludev, Kevin Francis MacDonald, Jianfa Zhang, David John Richardson
  • Publication number: 20150036204
    Abstract: An apparatus comprising a switchable optical filter comprising a layer of switchable material, the switchable material comprising a photochromic/thermochromic, a photochromic/photochromic, or a photochromic/electrochromic compound; a first light source providing light of a wavelength that causes the switchable material to transition from a faded state to a dark state, or a dark state to a faded state; and a switch for controlling activation of the first light source
    Type: Application
    Filed: February 22, 2013
    Publication date: February 5, 2015
    Applicant: Switch Materials, Inc.
    Inventors: Neil Robin Branda, Jeremy Graham Finden, Duhane Lam, Jonathan Ross Sargent, Cynthia Elizabeth Shippam, Douglas Malcolm Wiggin
  • Patent number: 8922875
    Abstract: An optical phase modulator based on the principles of stimulated Brillouin scattering is disclosed. The optical phase modulator uses a pump wave and a probe wave counte-propagating in an optical fiber, whose frequencies are chosen such that a difference thereof differs from a resonant Brillouin frequency of the optical fiber. The pump wave is amplitude modulated prior to injecting into the optical fiber, causing phase modulation of the probe wave inside and at the exit from the optical fiber. Alternatively, the probe wave can be amplitude modulated, thereby causing a phase modulation of the pump wave. In the embodiments of the invention, the pump wave is a continuous wave, and the probe wave is a pulse Stokes wave or an anti-Stokes wave. A corresponding optical network using the phase modulator is also disclosed.
    Type: Grant
    Filed: October 2, 2012
    Date of Patent: December 30, 2014
    Inventors: Daisy Williams, Xiaoyi Bao, Liang Chen
  • Publication number: 20140362428
    Abstract: The present invention relates to a device and method of reversibly activating photochromic materials within an enclosed vehicle using one or more ultraviolet (UV) sources located within the interior of a vehicle. Upon activation, such UV sources cause the photochromic materials to darken; upon deactivation, the photochromic materials revert to their clear state. The photochromic materials may form part of a pair of eyeglasses (10) containing photochromic lenses, thereby enabling their use as sunglasses within an enclosed vehicle. UV sources may be aimed at the photochromic target and may be automatically modulated using a photosensor in response to changing ambient light conditions. UV sources may be positioned in differing locations within the vehicle. A variety of different UV sources may be used.
    Type: Application
    Filed: June 6, 2013
    Publication date: December 11, 2014
    Inventor: Nelson Gee-Con Chen
  • Publication number: 20140327949
    Abstract: An active, transparency-controlled window comprises at least one layer of a material that is transparent to at least selected wavelengths of light; at least one layer of photochromic material having a transparency, to the at least selected wavelengths of light, that can be controllably altered by an activating light; and a controllable source of light that activates the photochromic material to controllably alter the transparency of the photochromic material to the at least selected wavelengths of light. The material that is transparent to at least selected wavelengths of light may be a material selected from the group consisting of glass and plastic.
    Type: Application
    Filed: December 17, 2012
    Publication date: November 6, 2014
    Inventors: Noam Gross, Ariela Donval, Doron Nevo, Moshe Oron
  • Publication number: 20140321162
    Abstract: The methods, devices, and/or compositions described herein can used to reduce variations, such as spatial and temporal variations, in luminance intensity. Luminance variation is reduced by varying some aspect of transmittance with respect to the intensity of light.
    Type: Application
    Filed: October 26, 2012
    Publication date: October 30, 2014
    Applicant: Empire Technology Development LLC
    Inventors: Motoyuki Toki, Sayoko Tanaka, Masumi Honda
  • Publication number: 20140268264
    Abstract: A spatial light modulator, a holographic image display including the same, and a method for spatially modulating light. The spatial light modulator modulates a phase of light that is incident on a plurality of pixels and includes a variable refractive index layer that has a refractive index which is variable based on one of an optical signal and an electrical signal, and a metal layer that is disposed on the refractive index-change layer, and a high refractive index layer on the metal layer. Light incident on the metal layer causes generation of a surface plasmon at an interface between the variable refractive index layer and the metal layer.
    Type: Application
    Filed: September 10, 2013
    Publication date: September 18, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Gae-hwang LEE, Jae-eun JUNG, Kyu-young HWANG, Hoon SONG, Seung-hoon HAN
  • Publication number: 20140253834
    Abstract: An optical shutter device includes a temperature responsive gate and a photochromic attenuator arranged such that at low temperatures the device is largely transmissive to solar or other radiation within a given band of wavelengths and, at high temperatures, the device is largely nontransmissive when a flux of trigger wavelengths is present and largely transmissive when a flux of trigger wavelengths is not present.
    Type: Application
    Filed: March 10, 2014
    Publication date: September 11, 2014
    Inventors: Wil McCarthy, Wilder Iglesias, Christopher M. Caldwell
  • Patent number: 8831386
    Abstract: Protein scaffolds from tobacco mosaic virus coat protein modified to incorporate polyhistidine can bind to a metal or a dye while having improved self-assembly characteristics. The scaffold can take the form of tubes or disks, and can further be formed into dual plasmonic ring resonators. Such self-assembled structures provide useful optical properties.
    Type: Grant
    Filed: January 12, 2012
    Date of Patent: September 9, 2014
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Banahalli R. Ratna, Amy S. Blum, Carissa M. Soto, Michael A. Bruckman, Jinny Lin Liu, Ronald W. Rendell, James Peter Long, Ronald J. Tonucci
  • Publication number: 20140224989
    Abstract: Optical devices that include one or more structures fabricated from polar-dielectric materials that exhibit surface phonon polaritons (SPhPs), where the SPhPs alter the optical properties of the structure. The optical properties lent to these structures by the SPhPs are altered by introducing charge carriers directly into the structures. The carriers can be introduced into these structures, and the carrier concentration thereby controlled, through optical pumping or the application of an appropriate electrical bias.
    Type: Application
    Filed: February 7, 2014
    Publication date: August 14, 2014
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: James Peter Long, Joshua D. Caldwell, Jeffrey C. Owrutsky, Orest J. Glembocki
  • Patent number: 8798408
    Abstract: Plasmons on a waveguide may deliver energy to photocatalyze a reaction. The waveguide or other energy carrier may be configured to carry electromagnetic energy and generate plasmon energy at one or more locations proximate to the waveguide, where the plasmon energy may react chemically with a medium or interaction material.
    Type: Grant
    Filed: April 9, 2012
    Date of Patent: August 5, 2014
    Inventor: Roderick A. Hyde
  • Publication number: 20140204442
    Abstract: Described is a method of controlling the absorption of light in a cavity, a system in which absorption is so controlled, and an interferometer embodying the underlying physical concept. Materials can be made to completely absorb incident light when the light is imposed in a specific pattern of illumination. Coherent perfect absorption, as the process is referred to, is achieved when a cavity is illuminated coherently and monochromatically by the time-reverse of the output of a lasing mode. Varying the parameters of the incident light and/or of the cavity allows the absorption of the incident light by the cavity to be controlled; enhanced or even reduced.
    Type: Application
    Filed: March 25, 2014
    Publication date: July 24, 2014
    Applicant: Yale University
    Inventors: A. Douglas Stone, Hui Cao, Li Ge, Yidong Chong
  • Publication number: 20140177024
    Abstract: An all-photonic method to cause a WGM resonator to self-tune to a given wavelength is described. Such all photonic approaches include simply superimposing intense light of a wavelength in a range different from that of a signal wave. The wavelength of the pass band for the signal wavelength can be tuned by adjusting the wavelength (and/or the intensity) of the intense light.
    Type: Application
    Filed: December 24, 2013
    Publication date: June 26, 2014
    Inventors: Iwao Teraoka, Monica Agarwal
  • Patent number: 8625936
    Abstract: A system, e.g. an optical modulator, includes an optical waveguide and a plurality of optical resonators. The optical waveguide is located along a surface of a planar substrate. The plurality of optical resonators is also located along the surface and coupled to the optical waveguide. Each of said optical resonators is configured to resonantly couple to the optical waveguide at a different optical frequency.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: January 7, 2014
    Assignee: Alcatel Lucent
    Inventor: Po Dong
  • Publication number: 20140002879
    Abstract: Some embodiments provided herein relate to filters for electromagnetic radiation. Some embodiments provided herein relate to phototunable compounds for which at least one optical characteristic can be changed. Some embodiments herein relate to methods of manipulating a wavelength of electromagnetic radiation.
    Type: Application
    Filed: June 27, 2012
    Publication date: January 2, 2014
    Applicant: EMPIRE TECHNOLOGY DEVELOPMENT LLC
    Inventor: Toshimi Fukui
  • Publication number: 20130250392
    Abstract: Variable transmittance optical filters capable of transitioning from a light state to a dark state on exposure to UV radiation and from a dark state to a light state with application of an electric voltage are provided. The optical filters comprise a switching material that comprises one or more chromophores that have electrochromic and photochromic properties.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 26, 2013
    Applicant: SWITCH MATERIALS, INC.
    Inventors: Duhane Lam, Neil R. Branda, Andreea Spantulescu, Jeremy Graham Finden, Ali Hayek, Kyle Andrew Hope-Ross, Serguei Sviridov
  • Publication number: 20130094069
    Abstract: A spatial light modulator may include a refraction layer including first and second regions with refractive indices different from each other; and/or a metal thin film on a lower face of the refraction layer configured to generate surface plasmons due to light incident on the metal thin film via the refraction layer. When first light is incident on the refraction layer, a phase difference between light reflected by the first and second regions may occur. A spatial light modulator may include a metal thin film and a refraction layer on the metal thin film. The refraction layer may include a first region with a first refractive index and a second region with a second refractive index different from the first refractive index. When first light is incident on the refraction layer, there may be a phase difference between light reflected from the first and second regions.
    Type: Application
    Filed: August 20, 2012
    Publication date: April 18, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Gae-hwang LEE, Jae-eun JUNG, Kyu-young HWANG
  • Patent number: 8400695
    Abstract: A holographic display device comprises an OLED array writing onto an OASLM, the OLED array and OASLM forming adjacent layers. The OASLM encodes a hologram and a holographic reconstruction is then generated by the device when an array of read beams illuminates the OASLM. The OASLM is suitably controlled by the OLED array. An advantage of the device is that it lends itself to compactness.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: March 19, 2013
    Assignee: Seereal Technologies S.A.
    Inventors: Bo Kroll, Ralf Haussler, Armin Schwerdtner
  • Publication number: 20130015245
    Abstract: A printed dynamic optical illusion printed on a printing device using a plurality of colorants, wherein one or more of the colorants are appearance mutable colorants having spectral characteristics that can be controllably switched between a first colorant state and a second colorant state by application of an appropriate external stimulus, and wherein one or more mutable portions of the optical illusion image are printed using at least one appearance mutable colorant. The mutable portions are controllable such that when they are in a first appearance state the printed optical illusion image has a first illusion state, and when they are in a second appearance state the printed optical illusion image has a second illusion state, thereby changing the optical illusion image from the first illusion state to the second illusion state so as to affect the perception of an optical illusion by a human observer.
    Type: Application
    Filed: July 13, 2011
    Publication date: January 17, 2013
    Inventors: Andrew F. Kurtz, Paul James Kane
  • Publication number: 20130016415
    Abstract: A system for controlling a printed dynamic optical illusion image, comprising: an item including a printed optical illusion image having one or more mutable portions that can be controllably switched between first and second appearance states by application of an appropriate external stimulus; a stimulus source for providing the external stimulus; and a controller for controlling the stimulus source. The printed optical illusion image is printed on a printing device using a plurality of colorants, one or more of the colorants being appearance mutable colorants having spectral characteristics that can be controllably switched between a first colorant state and a second colorant state by applying the appropriate external stimulus, the one or more mutable portions of the optical illusion image being printed using at least one appearance mutable colorant.
    Type: Application
    Filed: July 13, 2011
    Publication date: January 17, 2013
    Inventors: Andrew F. Kurtz, Paul James Kane
  • Publication number: 20120293854
    Abstract: A non-linear optical device comprising a non-linear element made of a plasmonic material with a periodic structure having a period smaller than the wavelength of a non-linear process intrinsic to the plasmonic material. The plasmonic material is implemented as a gold film which is structured with a periodic array of asymmetric split ring slits. The metamaterial framework of the plasmonic material itself is used as the source of a strong and fast non-linearity. The cubic non-linear response is resonantly enhanced through the effect of the metamaterial structuring by more than two orders of magnitude and its sign and magnitude can be controlled by varying the metamaterial pattern.
    Type: Application
    Filed: May 16, 2012
    Publication date: November 22, 2012
    Inventors: Nikolay Ivanovich Zheludev, Eric Plum, Jun-Yu Ou, Kevin Macdonald, Andrey Nikolaenko, Jianfa Zhang, Mengxin Ren, Baohua Jia
  • Publication number: 20120286163
    Abstract: A device (100) is described for actively or passively modulating incident radiation, the device comprising at least one diffraction means (10) adapted for evanescent wave excitation upon irradiation with the incident radiation, and an absorption layer (40) adjacent the at least one diffraction means (10) so that the evanescent waves can interact with the absorption layer (40). The absorption layer (40) has alterable absorption properties so as to alter the absorption of the evanescent waves resulting in modulating of the incident radiation. The device (100) may be for actively modulating incident radiation thus being e.g. a modulator for laser radiation. Alternatively, the device may be for passively modulating incident radiation, thus acting as a sensing device for sensing environmental parameters.
    Type: Application
    Filed: January 22, 2011
    Publication date: November 15, 2012
    Inventors: Johan Stiens, Werner Vandermeiren, Gennady Shkerdin, Roger Vounckx
  • Publication number: 20120275007
    Abstract: Described herein are optical devices comprising a photorefractive layer and at least two inert layers, such that the photorefractive layer is sandwiched between the two inert layers. The photorefractive layer may include a photorefractive composition that is photorefractive upon irradiation by a laser beam. In some embodiments, the photorefractive composition is formulated such that a grating that is irradiated into the photorefractive composition can be read out of the photorefractive composition without applying an external bias voltage. Furthermore, a grating that is written into the composition may be controlled using thermal treatment.
    Type: Application
    Filed: September 18, 2009
    Publication date: November 1, 2012
    Applicant: Nitto Denko Corporation
    Inventors: Tao Gu, Weiping Lin, Peng Wang, Donald Flores, Michiharu Yamamoto
  • Patent number: 8300669
    Abstract: A control system and apparatus for use with an ultra-fast laser is provided. In another aspect of the present invention, the apparatus includes a laser, pulse shaper, detection device and control system. A multiphoton intrapulse interference method is used to characterize the spectral phase of laser pulses and to compensate any distortions in an additional aspect of the present invention. In another aspect of the present invention, a system employs multiphoton intrapulse interference phase scan. Furthermore, another aspect of the present invention locates a pulse shaper and/or MIIPS unit between a laser oscillator and an output of a laser amplifier.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: October 30, 2012
    Assignee: Board of Trustees of Michigan State University
    Inventors: Marcos Dantus, Igor Pastirk, Vadim Lozovoy, Matthew Comstock