Specified Output Coupling Device Patents (Class 372/108)
  • Patent number: 10317632
    Abstract: An example system includes a grating coupled laser, a laser optical interposer (LOI), an optical isolator, and a light redirector. The grating coupled laser includes a laser cavity and a transmit grating optically coupled to the laser cavity. The transmit grating is configured to diffract light emitted by the laser cavity out of the grating coupled laser. The LOI includes an LOI waveguide with an input end and an output end. The optical isolator is positioned between the surface coupled edge emitting laser and the LOI. The light redirector is positioned to redirect the light, after the light passes through the optical isolator, into the LOI waveguide of the LOI.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: June 11, 2019
    Assignee: Finisar Corporation
    Inventors: Daniel Mahgerefteh, Jin-Hyoung Lee, Shiyun Lin
  • Patent number: 10297980
    Abstract: A diode-laser assembly having an electrically isolated diode-laser bar on a cooled base-element is disclosed. The diode-laser bar is electrically isolated from the base-element and electrically isolated from any coolant water, thereby eliminating the need for de-ionized water and mitigating corrosion due to galvanic action. Multiple such diode-laser assemblies are stackable, with small bar-to-bar pitch, enabling a high-current and high-brightness diode-laser stack.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: May 21, 2019
    Assignee: Coherent, Inc.
    Inventors: Geunmin Ryu, Athanasios Chryssis, David Schleuning
  • Patent number: 10247583
    Abstract: A fiber optic sensor may be provided comprising an optical waveguide having at least one first core and a cladding surrounding the first core, wherein the first core extends substantially over the entire length of the optical waveguide and at least one Bragg grating is introduced into the first core, wherein the Bragg grating has an elongated cross section, wherein the short semi-axis is smaller than the diameter of the first core and the center of gravity of the cross section of the at least one Bragg grating lies on the axis of symmetry of the optical waveguide. A method may be provided for determining torsion with such a sensor. A method for the production of such a sensor may be provided.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: April 2, 2019
    Inventors: Wolfgang Schade, Christian Waltermann
  • Patent number: 10243318
    Abstract: In a laser device and a photoacoustic measurement device including the laser device, the intensity of light at each wavelength made independently controllable. The laser device includes a laser medium which has oscillation wavelengths at a first wavelength and a second wavelength with higher light emission efficiency than at the first wavelength, an excitation section, a first resonator, a second resonator, a Q-value change unit, and a control section. The control section oscillates light having the first wavelength through Q switching when a first delay time has elapsed after the excitation of the laser medium has been started in a case where the oscillation wavelength is the first wavelength, and oscillates light having the second wavelength through Q switching when a second delay time has elapsed after the excitation of the laser medium has been started in a case where the oscillation wavelength is the second wavelength.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: March 26, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Dai Murakoshi, Kaku Irisawa, Takuji Tada
  • Patent number: 10243328
    Abstract: A hybrid single or multi-wavelength laser using an optical gain element, such as a semiconductor optical amplifier (SOA), for example a QD RSOA, and a semiconductor, e.g. silicon, photonics chip is demonstrated. A plurality, e.g. four, lasing modes at a predetermined, e.g. 2 nm, spacing and less than 3 dB power non-uniformity may be observed, with over 20 mW of total output power. Each lasing peak can be successfully modulated at 10 Gb/s. At 10?9 BER, the receiver power penalty is less than 2.6 dB compared to a conventional commercial laser. An expected application is the provision of a comb laser source for WDM transmission in optical interconnection systems.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: March 26, 2019
    Assignee: Elenion Technologies, LLC
    Inventors: Yi Zhang, Shuyu Yang, Michael J. Hochberg, Thomas Wetteland Baehr-Jones, Saeed Fathololoumi
  • Patent number: 10181700
    Abstract: A semiconductor laser includes a main body and a ridge structure arranged on the main body, the ridge structure being oriented along a longitudinal axis above an active zone, wherein the ridge structure has a first width, the ridge structure has two opposite end faces along the longitudinal axis, adjacent to at least one end face, the ridge structure has an end section arranged on one side with respect to a center axis of the ridge structure such that the ridge structure is widened on one side adjacent to the end face, and on an opposite side of the ridge structure relative to the end section a fracture trench is arranged adjacent to the end face and at a distance from the ridge structure in a surface of the main body.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: January 15, 2019
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventors: Christoph Eichler, Jens Müller, Fabian Kopp
  • Patent number: 10096973
    Abstract: A gallium- and nitrogen-containing laser device including an etched facet with surface treatment to improve an optical beam is disclosed.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: October 9, 2018
    Assignee: Soraa Laser Diode, Inc.
    Inventors: James W. Raring, Matthew Schmidt, Bryan Ellis
  • Patent number: 10063033
    Abstract: An edge-emitting semiconductor laser includes: a semiconductor substrate; a first cladding layer having a first refractive index and formed on the semiconductor substrate; an active layer formed on the first cladding layer and having a second refractive index higher than the first refractive index; a Bragg reflector formed on the active layer and in which low-refractive-index layers and high-refractive-index layers each having a thickness larger than ?/4n are alternately laid one on another where ? is an lasing wavelength and n is a refractive index of a medium; a light absorption layer formed on the Bragg reflector and having bandgap energy lower than that of the active layer; and a second cladding layer formed on the light absorption layer and having a third refractive index lower than the second refractive index.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: August 28, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Ayumi Fuchida, Yuichiro Okunuki
  • Patent number: 10048504
    Abstract: An optical system for the generation of a structured light field comprises an array of light sources and a structuring unit separate from said array of light sources, said structuring unit being refractive or reflective and transforming the output of that array of light sources into a structured light illumination by collimating the light beam of each individual light source and directing each beam into the scene under vertical and horizontal angles that can be arbitrarily chosen by refraction or reflection.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: August 14, 2018
    Assignee: IEE International Electronics & Engineering S.A.
    Inventor: Norbert Herschbach
  • Patent number: 10044162
    Abstract: An incoherent beam combination based high energy nanosecond pulsed fiber laser includes a nanosecond pulsed seed, a fiber splitter, fiber amplifiers, synchronization fibers, a fiber laser combiner and a laser output head. The output fiber of the pulsed seed is fusion spliced to the input fiber of the splitter; the output fibers of the splitter are fusion spliced to the fiber amplifiers separately; synchronization fibers are fusion spliced between the amplifiers and the input fibers of the fiber laser combiner. The nanosecond pulsed seed is split by the fiber splitter and amplified in the later fiber amplifiers; synchronization fibers make sure the optical time-domain synchronization; the fiber laser combiner allows for the incoherent combination of high energy pulsed laser.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: August 7, 2018
    Assignee: HFB Photonics co., Ltd.
    Inventors: Wei Shi, Qiang Fang, Liang Qi
  • Patent number: 10031290
    Abstract: The invention relates to an optical interference filter device which defines a first periodic filter frequency response between a first filter output port and a filter input port and a second periodic filter frequency response having the same free spectral range as the first periodic frequency response between a second filter output port and the filter input port. The first and second periodic filter frequency responses are shifted versus each other by a predetermined optical frequency distance.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: July 24, 2018
    Assignee: ADVA Optical Networking SE
    Inventor: Benjamin Wohlfeil
  • Patent number: 9999468
    Abstract: A laser system for use in an environment is disclosed. The laser system may include a base unit including a laser, a controller operatively coupled to the laser, and a first antenna operatively coupled to the controller. The laser system may further include a laser energy delivery system having a first end which receives laser energy from the laser and a second end which delivers the laser energy to the environment. The laser system may further include a switch unit located remote from the base unit and including a switch controller, a second antenna operatively coupled to the switch controller, and a user operable switch. The switch unit may be connected to the base unit through a tether. The controller may determine when the laser energy is provided to the laser energy delivery system based on a signal from the switch unit, the signal being sent wirelessly to the controller from the second antenna of the switch unit to the first antenna of the base unit.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: June 19, 2018
    Inventor: Kenneth Chalfant
  • Patent number: 9966723
    Abstract: A laser including a solid state laser gain medium having a D-shaped cross section and an unstable resonator laser cavity including the solid state laser gain medium configured with a geometric magnification in a range of 1 to 5 under the intended operating conditions, including the effects of thermal lensing in the gain medium. An optical switching device in the unstable resonator laser cavity generates a pulse duration in the range of 0.05 to 100 nanoseconds. A diode-pump source is configured to inject pump light through the curved or barrel surface of the D-shaped gain medium.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: May 8, 2018
    Assignee: JGM Associates, Inc.
    Inventor: Jeffrey G. Manni
  • Patent number: 9882339
    Abstract: A laser oscillation device can prevent a laser medium-circulating pipe from expanding. The laser oscillation device includes a resonator part, which has an introduction port, through which a laser medium is introduced, and a discharge port, from which the laser medium is discharged, and which generates a laser beam, a laser medium-circulating pipe having one end connected to the introduction port, and the other end connected to the discharge port, a blower arranged in the laser medium-circulating pipe, to circulate the laser medium so that the laser medium is introduced from the introduction port to the resonator part, and the laser medium introduced to the resonator part is discharged from the discharge port, and a heat-insulating mechanism which is provided in the laser medium-circulating pipe, to block heat conduction between the laser medium flowing through the laser medium-circulating pipe and the laser medium-circulating pipe.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: January 30, 2018
    Inventor: Tetsuhisa Takazane
  • Patent number: 9882343
    Abstract: A narrow band laser apparatus may include: a laser resonator; a pair of discharge electrodes; a power supply; a first wavelength measurement device configured to output a first measurement result; a second wavelength measurement device configured to output a second measurement result; and a control unit. The control unit calibrates the first measurement result, based on a difference between the second measurement result derived when the control unit controls the power supply to apply a pulsed voltage to the pair of discharge electrodes with a first repetition frequency and the second measurement result derived when the control unit controls the power supply to apply the pulsed voltage to the pair of discharge electrodes with a second repetition frequency, the second repetition frequency being higher than the first repetition frequency.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: January 30, 2018
    Assignee: Gigaphoton Inc.
    Inventors: Masato Moriya, Takeshi Ohta, Keisuke Ishida, Takashi Kusama
  • Patent number: 9871341
    Abstract: A laser structure includes a substrate and a first dielectric layer formed on the substrate. A multi-quantum well is formed on the first dielectric layer and has a plurality of alternating layers. The alternating layers include a dielectric layer having a sub-wavelength thickness and a monolayer of a two dimensional material.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: January 16, 2018
    Assignee: International Business Machines Corporation
    Inventors: Ning Li, Devendra K. Sadana, Jinghui Yang
  • Patent number: 9851248
    Abstract: An intracavity laser absorption infrared spectroscopy system for detecting trace analytes in vapor samples. The system uses a spectrometer in communications with control electronics, wherein the control electronics contain an analyte database that contains absorption profiles for each analyte the system is used to detect. The system can not only detect the presence of specific analytes, but identify them as well. The spectrometer uses a hollow cavity waveguide that creates a continuous loop inside of the device, thus creating a large path length and eliminating the need to mechanically adjust the path length to achieve a high Q-factor. In a preferred embodiment, the laser source may serve as the detector, thus eliminating the need for a separate detector.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: December 26, 2017
    Assignee: EMX International, LLC
    Inventors: Daniel Lee Graybeal, Alan Carey Rogers, Andrey Muraview, Charles Mark Carnifax, Robert E. Peale
  • Patent number: 9793682
    Abstract: Embodiments include a silicon photonic chip having a substrate, an optical waveguide on a surface of the substrate and a cavity. The cavity includes an electro-optical component, configured for emitting light perpendicular to said surface and a lens element arranged on top of the electro-optical component. The lens is configured for collimating light emitted by the electro-optical component. The chip also includes a deflector arranged on top of the lens element and configured for deflecting light collimated through the latter toward the optical waveguide. The lens element includes electrical conductors connected to the electro-optical component. The electrical conductors of the lens element may for instance include one or more through vias, one or more bottom electrical lines on a bottom side of the lens element (facing the electro-optical component), and at least one top electrical line.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: October 17, 2017
    Inventors: Charles Jean Ghislain Caer, Antonio La Porta, Bert J. Offrein
  • Patent number: 9709379
    Abstract: The invention generally relates to an optical coherence tomography system that is reconfigurable between two different imaging modes and methods of use thereof.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: July 18, 2017
    Assignee: Volcano Corporation
    Inventor: Nathaniel J. Kemp
  • Patent number: 9705279
    Abstract: In a resonator arrangement (1) including a resonator (2), an interferometer (9) is arranged inside the resonator (2) and includes at least a first and a second interferometer leg (9a, 9b). The two interferometer legs (9a, 9b) have optical path lengths (L1, L2) that differ from each other. According to the invention a splitting ratio is variably adjustable, with which the interferometer (9) splits radiation (8) circulating in the resonator (2) into the first and second interferometer legs (9a, 9b).
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: July 11, 2017
    Inventors: Ronald Holzwarth, Wolfgang Haensel
  • Patent number: 9678276
    Abstract: Optical microresonator platforms are provided comprising a substrate having a surface, a plurality of SiO2 pillars, and a plurality of SiO2 whispering gallery mode (WGM) optical microresonators, each SiO2 pillar extending from the surface of the substrate and terminating in a corresponding SiO2 WGM optical microresonator of the plurality of SiO2 WGM optical microresonators, wherein the substrate, the plurality of SiO2 pillars and the plurality of SiO2 WGM optical microresonators form a monolithic structure, and further wherein the substrate is substantially transparent to visible light. The substrate may be a SiO2 substrate and the SiO2 WGM optical microresonator may be a SiO2 optical microtoroid.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: June 13, 2017
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Randall Howard Goldsmith, Kassandra Ann Knapper, Kevin Daniel Heylman
  • Patent number: 9599773
    Abstract: An optical waveguide module includes an optical waveguide sheet including multiple optical waveguides, and a light-emitting device and a light-receiving device each positioned over a surface of the optical waveguide sheet. At least one of the optical waveguides includes a first mirror, a second mirror, and a slit. The first mirror is configured to reflect light entering the corresponding optical waveguide from its first end to the light-receiving device or to reflect light emitted from the light-emitting device toward the first end of the corresponding optical waveguide. The second mirror is configured to reflect light entering the corresponding optical waveguide from its second end toward the surface of the optical waveguide sheet. The slit is provided between the second mirror and the second end of the corresponding optical waveguide. The corresponding optical waveguide is discontinuous across the slit.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: March 21, 2017
    Inventors: Rie Gappa, Osamu Daikuhara, Shinichiro Akieda, Satoshi Moriyama, Hongfei Zhang, Mitsuki Kanda
  • Patent number: 9588296
    Abstract: A semiconductor waveguide optical device and a method of manufacturing of a semiconductor optical device are disclosed. The semiconductor waveguide optical device may include a gradient index waveguide for mode conversion and/or vertical translation of optical modes of step-index waveguides, which may be disposed on or over a same substrate as the gradient index waveguide. The gradient index waveguide may be epitaxially grown.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: March 7, 2017
    Assignee: Lumentum Operations LLC
    Inventors: John M. Heaton, Oleg Bouevitch
  • Patent number: 9548428
    Abstract: A light emitting diode includes: a substrate of front and back main surfaces; a V-shaped groove, which has a reflecting surface, formed over front surface of the conductive substrate; a light-emitting epitaxial layer, the margin of which has its vertical projection between the bottom and the inner margin of the V-shaped groove, formed over the substrate, so that light emitted from the light-emitting epitaxial layer margin is incident to the mirror surface of the V-shaped groove and emits outwards. This structure can effectively improve extraction efficiency of device and control path of light at peripheral region of the light-emitting epitaxial layer.
    Type: Grant
    Filed: October 17, 2015
    Date of Patent: January 17, 2017
    Inventors: Cuicui Sheng, Shuying Qiu, Chaoyu Wu, Ching-Shan Tao, Wenbi Cai
  • Patent number: 9461750
    Abstract: The optical transmitter includes a FP-LD, generating multiple-longitudinal mode light wave. The FP-LD is also driven by an electrical signal, modulates the electrical signal to the multiple-longitudinal mode light wave, and outputts the modulated multiple-longitudinal mode light wave. An optical coupler, coupled with the FP-LD, is used for feeding the modulated multiple-longitudinal mode light wave from the FP-LD to a fiber Bragg grating. The fiber Bragg grating is for filtering the received multiple-longitudinal mode light wave according to a parameter, and feeding back the optical signal generated after being filtered to the optical coupler. The optical coupler divides the optical signal, thus making the optical signal oscillate between the FP-LD and the fiber Bragg grating to form a oscillation cavity, and outputs a single mode optical wave with constant wavelength and power.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: October 4, 2016
    Assignee: Alcatel Lucent
    Inventors: Qingjiang Chang, Zhensen Gao
  • Patent number: 9429289
    Abstract: A lighting and/or signaling unit comprising a pair of light sources both cooperating with an optical element in such a way as to form two output light beams, depending on the desired lighting function. The output diopter, notably formed by elliptical portions, is adapted to accommodate the generation of beams from two sources spaced apart. Applicable to the motor vehicle industry.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: August 30, 2016
    Assignee: Valeo Vision
    Inventor: Jean-Luc Meyrenaud
  • Patent number: 9431785
    Abstract: Disclosed is a high power ultra-short pulsed laser device increasing pulse energy by using resonators. A pulsed laser device may comprise a first resonator making a pump beam resonate primarily and passing the pump beam which resonated through a first output mirror; and a second resonator comprising a first multiple reflection mirror and a second multiple reflection mirror. Also, the first multiple reflection mirror includes at least one first small area mirror, and the second multiple reflection mirror includes at least one second small area mirror, and the second resonator makes the laser beam delivered from the first resonator resonate by reflecting the laser beam repetitively. Therefore, the pulsed laser device may increase pulse energy without using a multi-stage amplifier so that a high power ultra-short pulsed laser beam can be generated.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: August 30, 2016
    Assignees: Electronics and Telecommunications Research Institute, GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Dong Hoon Song, Do Kyeong Ko, Dong Ho Shin, Hwang Woon Lee, Moon Youn Jung, Won Bae Cho
  • Patent number: 9318865
    Abstract: An illuminator comprising a short-wave infrared (SWIR) laser, a fiber optic, and a lens optic. The fiber optic is coupled to the SWIR laser for mixing the modes of a beam emitted by the SWIR laser. The lens optic is coupled to the fiber optic for shaping the beam into a top-hat beam profile. A method for creating SWIR illumination includes emitting a laser beam with multiple modes from a SWIR laser, transmitting the laser beam through a multi-mode fiber optic, and transmitting the laser beam through a lens optic. Transmitting the laser beam through the multi-mode fiber optic can including mixing modes of the laser beam thereby reducing speckle and constructive and destructive interference in the laser beam. Transmitting the laser beam through the lens optic can include generating a top-hat beam profile.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: April 19, 2016
    Assignee: Sensors Unlimited, Inc.
    Inventor: Marc Hansen
  • Patent number: 9042422
    Abstract: Disclosed is an ASE-free continuously tunable external resonator laser in which reduction in tuning range and decrease in output are suppressed. The external resonator laser comprises: a fixed support body which has a half mirror that partially reflects incident light and partially transmits incident light fixed therein; and a rotatory support body which is rotatably supported by the fixed support body by way of a shaft, and which has a laser chip that emits light, a collimator lens that collimates light emitted from the laser chip, and a diffraction grating that diffracts light emitted from the laser chip, fixed therein.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: May 26, 2015
    Inventors: Kiyohumi Muro, Tomohisa Endo, Yasutaka Shimada, Daisuke Fukuoka
  • Patent number: 9036678
    Abstract: A fiber coupled semiconductor device and a method of manufacturing of such a device are disclosed. The method provides an improved stability of optical coupling during assembly of the device, whereby a higher optical power levels and higher overall efficiency of the fiber coupled device can be achieved. The improvement is achieved by attaching the optical fiber to a vertical mounting surface of a fiber mount. The platform holding the semiconductor chip and the optical fiber can be mounted onto a spacer mounted on a base. The spacer has an area smaller than the area of the platform, for mechanical decoupling of thermally induced deformation of the base from a deformation of the platform of the semiconductor device. Optionally, attaching the fiber mount to a submount of the semiconductor chip further improves thermal stability of the packaged device.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: May 19, 2015
    Assignee: JDS Uniphase Corporation
    Inventors: Reddy Raju, Richard L. Duesterberg, Jay A. Skidmore, Prasad Yalamanchili, Xiangdong Qiu
  • Patent number: 9020002
    Abstract: Photonic integrated circuits on silicon are disclosed. By bonding a wafer of compound semiconductor material as an active region to silicon and removing the substrate, the lasers, amplifiers, modulators, and other devices can be processed using standard photolithographic techniques on the silicon substrate. A silicon laser intermixed integrated device in accordance with one or more embodiments of the present invention comprises a silicon-on-insulator substrate, comprising at least one waveguide in a top surface, and a compound semiconductor substrate comprising a gain layer, the compound semiconductor substrate being subjected to a quantum well intermixing process, wherein the upper surface of the compound semiconductor substrate is bonded to the top surface of the silicon-on-insulator substrate.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: April 28, 2015
    Assignee: The Regents of the University of California
    Inventors: Matthew N. Sysak, John E. Bowers, Alexander W. Fang, Hyundai Park
  • Patent number: 9020004
    Abstract: A ring resonator is connected to an optical amplifier. The ring resonator and optical amplifier are contained within the optical path of an optical resonator formed by a first and second reflector. The optical coupler branches part of the light conducting from the optical amplifier to the ring resonator within the optical resonator off to an output optical waveguide.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: April 28, 2015
    Assignee: Fujitsu Limited
    Inventor: Seokhwan Jeong
  • Patent number: 9007678
    Abstract: A monolithic fixed optical delay generator includes an optical substrate having a front face and a back face. A front coating is on the front face and a back coating is on the back face. The front coating is (i) highly reflective to a first wavelength and highly transmissive to a second wavelength while the back coating is highly reflective to the second wavelength, or (ii) the front coating is highly reflective to the second wavelength and is highly transmissive to the first wavelength while the back coating is highly reflective to the first wavelength.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: April 14, 2015
    Assignee: Lockheed Martin Corporation
    Inventor: Edward Miesak
  • Patent number: 9001862
    Abstract: A solid-state lasing device includes a micro-chip oscillator (MCO) affixed to a first tube, and a volume Bragg grating (VBG) plate affixed to a second tube. The second tube is configured to be telescopically coupled to the first tube with a slip fit such that the VBG plate is concentrically aligned with and is positioned at a specified distance from the MCO.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: April 7, 2015
    Assignee: Raytheon Company
    Inventors: Michael Ushinsky, Joseph J. Ichkhan, Derek M. Hendry
  • Patent number: 8982923
    Abstract: An apparatus includes a slider with a cavity in a trailing end of the slider. A laser is positioned in the cavity and has an output facet positioned adjacent to a first wall of the cavity. A cap is connected to the trailing end of the slider and covers the laser.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: March 17, 2015
    Assignee: Seagate Technology LLC
    Inventors: Douglas Cole, Lijuan Zhong, Roger Lee Hipwell, Jr., Joseph Michael Stephan, Scott Eugene Olson, Tanya Jegeris Snyder, Yongjun Zhao
  • Patent number: 8971376
    Abstract: Multiple broad area lasers are coupled to a planar lightwave circuit, where the waveguides come together to form a single wide emitting aperture. A tapered lens is used at the output of the planar lightwave circuit to transform the highly asymmetric mode into a conventional round mode. This configuration allows much higher “brightness”, allowing 10 or more 100 um wide broad area lasers to be coupled into a single 100 um core multimode fiber. This is considerably more efficient than the standard method of combining a single 100 um wide broad area laser to a 100 um core multimode fiber.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: March 3, 2015
    Assignee: Kaiam Corp.
    Inventors: Bardia Pezeshki, John Heanue
  • Patent number: 8937983
    Abstract: A device for transformation of concentrated solar energy including a photovoltaic cell and laser device, which includes a first reflecting mirror adapted for entry of a beam of solar rays and a second reflecting mirror adapted for an outlet of a laser beam, with the first reflecting mirror reflective on an outlet wavelength of the laser beam and transparent to a totality of a solar spectrum and the second reflecting mirror partially reflective on the wavelength of the laser beam, reflective in an interval of the solar spectrum which is absorbed and transparent in other wavelengths different to these, and at the outlet of the laser beam. The device includes a nucleus doped with substances for total or partial absorption of the solar spectrum and coatings.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: January 20, 2015
    Assignee: Abengoa Solar New Technologies, S.A.
    Inventors: Juan Pablo Nunez Bootello, Manuel Gallas Torreira
  • Patent number: 8917748
    Abstract: There is provided an output coupler modulated laser. The laser includes an optical resonator for light to circulate within, a gain medium housed within the optical resonator and a pump. An output coupler included in the optical resonator is responsive to a control signal to generate a modulated optical signal at a laser output port, and a complementary signal at a through port to retain circulating light within the optical resonator. The output coupler and the pump are jointly controllable to maintain the power level of the circulating light substantially at a selected, steady state level, and to decouple the modulation response of the laser from the intrinsic response of the circulating light due to interaction with the gain medium. The output coupler is configurable for simple amplitude modulation, Phase-Shift Keying (PSK), Quadrature Amplitude Modulation (QAM), and is suitable for use with high-finesse, micron or millimeter scale resonators.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: December 23, 2014
    Assignee: The Governing Council of the University of Toronto
    Inventors: Joyce Kai See Poon, Wesley David Sacher
  • Patent number: 8909006
    Abstract: An optical waveguide device is provided which can efficiently guide undesired light to the outside of a substrate or the outside of the overall optical waveguides even when optical waveguides are integrated. In the optical waveguide device, an optical waveguide is formed on a substrate, the optical waveguide includes a main waveguide in which signal light propagates and an undesired-light waveguide for removing undesired light from the main waveguide, and the undesired-light waveguide is separated by the main waveguide interposed therebetween at an intersection in which the undesired-light waveguide and the main waveguide intersect each other.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: December 9, 2014
    Assignee: Sumitomo Osaka Cement Co., Ltd.
    Inventors: Norikazu Miyazaki, Kei Katou
  • Patent number: 8908740
    Abstract: A light emitting device, comprises: a light source that emits excitation light; a light guide that propagates the excitation light, and in which the refractive index of the center part (core) of a cross section is higher than the refractive index of the peripheral part (cladding); a wavelength conversion member that absorbs the excitation light propagated by the light guide and converts the wavelength thereof, and releases light of a predetermined wavelength band; and a shielding member that blocks the wavelength of at least part of the excitation light and the light emitted from the wavelength conversion member.
    Type: Grant
    Filed: February 6, 2007
    Date of Patent: December 9, 2014
    Assignee: Nichia Corporation
    Inventors: Shinichi Nagahama, Atsutomo Hama, Takafumi Sugiyama, Tomohisa Kishimoto
  • Patent number: 8902948
    Abstract: A degree of polarization control device includes: a calcium fluoride crystal substrate for transmitting a laser beam; a polarization monitor for measuring the degree of polarization of a laser beam transmitted through the calcium fluoride crystal substrate; and a controller for controlling the rotation angle of the calcium fluoride crystal substrate according to the degree of polarization measured by the polarization monitor; the calcium fluoride crystal substrate being formed by a flat plate having a laser beam entering surface and a laser beam exiting surface running in parallel with the (111) crystal face, the Brewster angle being selected for the incident angle, the rotation angle around the [111] axis operating as a central axis being controlled by the controller.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: December 2, 2014
    Assignee: Gigaphoton Inc.
    Inventors: Shinji Nagai, Fumika Yoshida, Osamu Wakabayashi, Kouji Kakizaki
  • Patent number: 8897327
    Abstract: A laser diode device including a housing having a mounting area in a cavity of the housing, at least one laser diode chip that emits electromagnetic radiation through a radiation exit area during operation, at least one covering element which is transmissive, at least in places, to the electromagnetic radiation generated by the laser diode chip during operation, and a deflection element, that directs at least part of the electromagnetic radiation generated by the laser diode chip during operation in a direction of the covering element, wherein the radiation exit area of the laser diode chip runs substantially transversely or substantially perpendicularly with respect to the mounting area and/or with respect to the covering element, the covering element connects to the housing, and the covering element tightly closes the housing.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: November 25, 2014
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventors: Karsten Auen, Uwe Strauss, Thomas Höfer
  • Patent number: 8853657
    Abstract: A regenerative ring resonator in the path of a light beam includes a discharge chamber having electrodes and a gain medium between the electrodes; an optical coupler that is partially reflective so that at least a portion of a light beam impinging on the optical coupler from the discharge chamber is reflected back through the discharge chamber and at least a portion of the light beam impinging on the optical coupler from the discharge chamber is transmitted through the optical coupler; and an attenuation optical system in the path of the light beam within the resonator, the attenuation optical system having a plurality of distinct attenuation states, with each attenuation state defining a distinct attenuation factor applied to the light beam to provide adjustment of an energy of the light beam.
    Type: Grant
    Filed: July 28, 2012
    Date of Patent: October 7, 2014
    Assignee: Cymer, LLC
    Inventors: Robert J. Rafac, Rostislav Rokitski
  • Patent number: 8855160
    Abstract: Specifically, provided is a horizontal-cavity surface-emitting laser including, on a semiconductor substrate: a cavity structure; a waveguide layer; and a reflecting part, wherein a first electrode provided on the semiconductor substrate along side regions of the cavity structure and the reflecting part and a second electrode provided on the main surface of the cavity structure are provided, the first electrode includes an electrode (1) that is provided around one side region of the reflecting part located in the direction intersecting with the traveling direction of light guided through the waveguide layer and an electrode (2) provided around one side region of the cavity structure and the other side region of the reflecting part that are located in the direction parallel with the traveling direction of light guided through the waveguide layer, and the shape of the electrode (2) has different widths at at least two positions.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: October 7, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Koichiro Adachi, Yasunobu Matsuoka, Toshiki Sugawara, Kazunori Shinoda, Shinji Tsuji
  • Patent number: 8855166
    Abstract: A system and method of operating a high repetition rate gas discharge laser system. The system includes a gas discharge chamber having a hot chamber output window heated by the operation of the gas discharge laser chamber, an output laser light pulse beam path enclosure downstream of the hot chamber window and comprising an ambient temperature window, a cooling mechanism cooling the beam path enclosure intermediate the output window and the ambient window. The gas discharge chamber can include a longitudinally and axially compliant ground rod, including a first end connected to a first chamber wall, a second end connected to a second chamber wall, the second chamber wall opposite the first chamber wall and a first portion formed into a helical spring, the ground rod providing mechanical support for a preionizer tube.
    Type: Grant
    Filed: January 17, 2012
    Date of Patent: October 7, 2014
    Assignee: Cymer, LLC
    Inventors: Richard C. Ujazdowski, Richard M. Ness, J. Martin Algots, Vladimir B. Fleurov, Frederick A. Palenschat, Walter D. Gillespie, Bryan G. Moosman, Thomas D. Steiger, Brett D. Smith, Thomas E. McKelvey
  • Patent number: 8848756
    Abstract: A surface plasmon laser includes a metal layer, a gain medium layer provided on the metal layer and having a circular structure portion in which a whispering gallery mode is generated in which surface plasmon light generated due to surface plasmon resonance on an interface with the metal layer rotates along a circle, and a deformed portion formed to output part of laser light generated in the circular structure portion of the gain medium layer.
    Type: Grant
    Filed: September 17, 2012
    Date of Patent: September 30, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-soong Lee, Un-jeong Kim, Young-geun Roh, Yeon-sang Park
  • Patent number: 8829393
    Abstract: The thermal processing device includes a stage, a continuous wave electromagnetic radiation source, a series of lenses, a translation mechanism, a detection module, a three-dimensional auto-focus, and a computer system. The stage is configured to receive a substrate thereon. The continuous wave electromagnetic radiation source is disposed adjacent the stage, and is configured to emit continuous wave electromagnetic radiation along a path towards the substrate. The series of lenses is disposed between the continuous wave electromagnetic radiation source and the stage, and are configured to condense the continuous wave electromagnetic radiation into a line of continuous wave electromagnetic radiation on a surface of the substrate. The translation mechanism is configured to translate the stage and the line of continuous wave electromagnetic radiation relative to one another. The detection module is positioned within the path, and is configured to detect continuous wave electromagnetic radiation.
    Type: Grant
    Filed: April 9, 2012
    Date of Patent: September 9, 2014
    Assignee: Applied Materials, Inc.
    Inventors: Dean C. Jennings, Mark Yam, Abhilash J. Mayur, Vernon Behrens, Paul A. O'Brien, Leonid M. Tertitski, Alexander Goldin
  • Patent number: 8804787
    Abstract: A laser system includes a semiconductor laser having a laser driver coupled thereto. An output of the semiconductor laser is optically coupled to an input of an optical splitter that provides outputs including or coupled to a first branch having a first branch fiber coupled to a feedback reflector which provides a cavity boundary that defines a passive secondary cavity for the semiconductor laser, and a second branch including a back reflection reduction device. The roundtrip attenuation from an output facet of the laser to the feedback reflector is from ?30 dB to ?80 dB. The laser driver provides sufficient drive stability so that a frequency variation of the semiconductor laser is less than one free spectral range (FSR) of the secondary cavity. An output of said system is taken after the back reflection reduction device.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: August 12, 2014
    Assignee: Gooch and Housego PLC
    Inventors: Steven Michael Coleman, Alexander Rosiewicz
  • Patent number: 8798106
    Abstract: A laser cavity includes a gain medium for amplifying a light pulse in a light path, wherein the gain medium has a gain profile for amplifying the light pulse as a function of wavelength; at least one mirror on one side of the gain medium; and an output coupler. The output coupler has an output coupling profile for inducing loss in the light pulse as a function of wavelength that substantially matches the saturated gain profile of the gain medium across a range of lasing wavelengths. The purpose of this device is to achieve a flattened net-gain profile to substantially improve mode-locking performance with respect to self-starting, beam-quality, and broadband operation.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: August 5, 2014
    Assignee: Massachusetts Institute of Technology
    Inventors: Franz X. Kaertner, Li-Jin Chen
  • Patent number: 8785897
    Abstract: Monolithic opto-isolators and arrays of monolithic opto-isolators are disclosed. The monolithic opto-isolators are manufactured in a single semiconductor wafer where they may be tested at the wafer level before each opto-isolator is singulated from the wafer. The monolithic opto-isolators include a VCSEL monolithically produced adjacent to a photodiode where an axis of optical signal transmission of the VCSEL is substantially parallel to an axis of optical signal reception by the photodiode.
    Type: Grant
    Filed: September 5, 2007
    Date of Patent: July 22, 2014
    Assignee: Finisar Corporation
    Inventors: Harold Young Walker, James D. Guenter, Gary Landry, Jimmy A. Tatum