Mirror Support Or Alignment Structure Patents (Class 372/107)
  • Patent number: 10371625
    Abstract: Identification of reflective surfaces as being associated with optical threats is disclosed. A first laser signal is emitted from a first laser system at a first wavelength and a first emission circular polarization orientation. A first signal reflection of the first laser signal from a reflective surface at the first wavelength having a first return circular polarization orientation that is different from the first emission circular polarization orientation is detected. A first return quantification of the first signal reflection, based at least in part on an amount of circular polarization of the first signal reflection, is determined. It is determined that the reflective surface is associated with a threat optic based at least in part on the first return quantification.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: August 6, 2019
    Assignee: Lockheed Martin Corporation
    Inventors: David R. Twede, Suresh Subramanian, Richard William Guthrie
  • Patent number: 10297972
    Abstract: An erbium doped block of glass has input port and reflective end faces arranged such that a signal is launched into the block and is amplified as it traverses the block following a zig-zag path. A laser diode pump is focused to excite erbium ions within the block thereby amplifying the input signal light traversing the block numerous times. A gain flattening filter flattens the gain of the signal being amplified numerous times as the filter is within the path upon each pass across the block.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: May 21, 2019
    Inventor: Lijie Qiao
  • Patent number: 10295306
    Abstract: The present disclosure relates to a firearm which may include a frame with a first outer wall, and a second outer wall opposite the first outer wall. A laser module may be disposed between the first and second outer walls. An alignment pin may be in communication with the first outer wall and may be configured to move the laser module relative to the frame.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: May 21, 2019
    Assignee: Crosman Corporation
    Inventors: John A. Kowalczyk, Jr., Jeffrey D. Tuller, Jeffrey W. Mock
  • Patent number: 10276998
    Abstract: In a solid-state laser device and a photoacoustic measurement device including the solid-state laser device, the distance between a laser rod and a flash lamp is narrowed. A shielding lid shields mirrors and an optical path of laser light from the outside. A first portion of a frame body of a laser chamber is exposed from the shielding lid. A flash lamp stored in the frame body of the laser chamber is able to be removed from and inserted into the first portion of the frame body. A thin film portion having a thickness smaller than the thickness of other portions of the shielding lid is provided in at least a part of a region of the shielding lid covering the optical path of a light beam on the outside in a longitudinal direction from the first portion of the frame body of the laser chamber.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: April 30, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Kazuhiro Hirota, Hiroyasu Ishii, Takuji Tada
  • Patent number: 10243329
    Abstract: A tunable external resonator laser is mode-hop-free for broadband and has a laser chip which emits light; a lens which collimates the light emitted from the laser chip, a diffraction grating which diffracts the light collimated by the lens, a support body to which the diffraction grating is fixed, and a movable mirror which reflects the light diffracted by the diffraction grating, wherein the diffraction grating is arranged a prescribed distance apart from a Littman-type tunable external resonator laser arrangement in which the movable mirror rotates on a pivot which is the intersection point of the surface of said movable mirror and the surface of the diffraction grating.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: March 26, 2019
    Assignee: NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY
    Inventors: Kiyofumi Muro, Yuji Wakabayashi, Tomohisa Endo, Ken Kitahara
  • Patent number: 10197442
    Abstract: A method of interrogating an absorbing sample includes using a mode-locked laser mode-locked in both a clock-wise (CW) and a counter-clock wise (CCW) direction to generate first and second optical pulses having different repetition rates. One of the first and second optical pulses is directed in a CW direction and the other of the first and second optical pulses is directed in the CCW direction. The first optical pulses are transmitted through the absorbing sample to probe the absorbing sample while the second optical pulses are transmitted through the absorbing sample to act as a local oscillator. An interference pattern produced by interference between the first and second optical pulses is detected after traversing the absorbing sample.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: February 5, 2019
    Assignee: ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA
    Inventor: Khanh Q. Kieu
  • Patent number: 10027085
    Abstract: A Q-switched laser includes a laser cavity including a cavity mirror and an output coupler mirror. The Q-switched laser also includes a doped laser gain material disposed in the laser cavity and a Q-switch including a saturable absorber comprising Fe2+:ZnSe or Fe2+:ZnS.
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: July 17, 2018
    Assignee: The UAB Research Foundation
    Inventors: Sergey B. Mirov, Andrew Gallian, Alan Martinez, Vladimir V. Fedorov
  • Patent number: 9972963
    Abstract: The compact, laser cavity with a single-axis scanning element as the optical Q-switch incorporates all optical components required for a short-pulse laser. These optical components are ‘locked’ into alignment forming an optical laser cavity for diode laser or flash lamp pumping. The optical laser cavity does not need optical alignment after it is fabricated. Unfortunately, during the alignment process of the optical laser cavity there are small shifts due to the bonding process of the optical elements. These small shifts introduce alignment errors which results in a decrease in output energy and beam quality. The improvement presented adds a single circular wedge prism that corrects these alignment errors returning the output back to its optimum energy output and beam quality.
    Type: Grant
    Filed: April 1, 2014
    Date of Patent: May 15, 2018
    Assignee: The United States of America, as represented by the Secretary of the Army
    Inventors: John E. Nettleton, Nathaniel L. Hough
  • Patent number: 9879945
    Abstract: The present disclosure relates to a firearm which may include a frame with a first outer wall, and a second outer wall opposite the first outer wall. A laser module may be disposed between the first and second outer walls. An alignment pin may be in communication with the first outer wall and may be configured to move the laser module relative to the frame.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: January 30, 2018
    Assignee: Crosman Corporation
    Inventors: Jeffrey D. Tuller, Jr., Jeffrey W. Mock, John A. Kowalczyk, Jr.
  • Patent number: 9871340
    Abstract: A tunable laser including: a reflecting mirror; a partially transmitting mirror; a gain medium energized by a pump source; a pair of mirrors surrounding the gain medium, a first prism and a second prism located between the gain medium and the reflecting mirror; the first prism receives radiation from the gain medium and disperses the radiation to the second prism; the second prism receives and directs the radiation towards an optical element which filters the spatially dispersed radiation based on the position to the second prism, the radiation resonates between the reflecting mirror and the partially transmitting mirror; the second prism is placed on a stage moved by a linear motor such that a desired center wavelength is obtained by moving the second prism to a position so as to allow radiation having the desired center wavelength to resonate between the reflecting mirror and the partially transmitting mirror.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: January 16, 2018
    Assignee: THORLABS, INC.
    Inventors: Peter Fendel, David Sproles, James Easter, Xuan Luo
  • Patent number: 9843164
    Abstract: In various embodiments, laser apparatuses include thermal bonding layers between various components and sealing materials for preventing or retarding movement of thermal bonding material out of the thermal bonding layers.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: December 12, 2017
    Assignee: TERADIODE, INC.
    Inventors: Parviz Tayebati, Michael Deutsch
  • Patent number: 9830937
    Abstract: A laser is configured to emit light along a substrate-parallel plane along a first surface of the laser. An etched facet is on an emitting end of a lasing cavity and an etched mirror is on another end of the lasing cavity. An etched shaping mirror redirects light received from the etched facet in a direction normal to the substrate-parallel plane. A slider comprises an optical input coupler configured to couple the light from the laser into a waveguide of the slider. At least one protrusion is disposed on the laser and at least one recession is disposed on the slider, the at least one protrusion and the at least one recession configured to align the laser with the slider to allow the light to be coupled into the optical input coupler.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: November 28, 2017
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Roger L. Hipwell, Jr., Jon Paul Hurley, Scott Eugene Olson, Ralph Kevin Smith, Joseph Michael Stephan
  • Patent number: 9826623
    Abstract: A heat dissipation structure including: a printed circuit board; a first heat-generating element; a second heat-generating element; and a cured product of a thermally conductive curable liquid resin composition, the printed circuit board having a first surface and a second surface that is opposite to the first surface, the first heat-generating element being placed on the first surface, the second heat-generating element being placed on the second surface, the first heat-generating element generating an equal or greater amount of heat than the second heat-generating element, the second heat-generating element being surrounded by the cured product, the first heat-generating element being surrounded by a layer that has a lower thermal conductivity than the cured product.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: November 21, 2017
    Assignee: KANEKA CORPORATION
    Inventors: Aki Koukami, Kazuo Hagiwara, Keisuke Oguma, Kazuhide Fujimoto
  • Patent number: 9780523
    Abstract: A semiconductor laser device comprises a base, a first conductive layer, a second conductive layer, a third conductive layer, and a semiconductor laser chip in this order, each of which has a respective emitting-side end portion. The emitting-side end portion of the first conductive layer is in a common plane with the emitting-side end portion of the base. A thickness of the second conductive layer is greater than a thickness of the first conductive layer. The emitting-side end portion of the second conductive layer is disposed inward of the emitting-end portion of the first conductive layer. The emitting-side end portion of the third conductive layer is in a common plane with the emitting-side end portion of the second conductive layer. The emitting-side end portion of the semiconductor laser chip is disposed outward of the emitting-side end portion of the third conductive layer.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: October 3, 2017
    Assignee: NICHIA CORPORATION
    Inventors: Hideyuki Fujimoto, Masatoshi Nakagaki
  • Patent number: 9720145
    Abstract: An apparatus includes at least one multijunction diode laser situated to emit a plurality of beams along respective mutually parallel propagation axes, each beam having an associated mutually parallel slow axes and associated collinear fast axes, a fast axis collimator situated to receive and collimate the plurality of beams along the corresponding fast axes so as to produce corresponding fast axis collimated beams that propagate along associated non-parallel axes, and a reflector situated to receive the plurality of fast axis collimated beams and to reflect the beams so that the reflected fast axis collimated beams propagate along substantially parallel axes.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: August 1, 2017
    Assignee: nLIGHT, Inc.
    Inventor: Manoj Kanskar
  • Patent number: 9705289
    Abstract: An apparatus includes at least one multijunction diode laser situated to emit a plurality of beams along respective mutually parallel propagation axes, each beam having an associated mutually parallel slow axes and associated collinear fast axes, a fast axis collimator situated to receive and collimate the plurality of beams along the corresponding fast axes so as to produce corresponding fast axis collimated beams that propagate along associated non-parallel axes, and a reflector situated to receive the plurality of fast axis collimated beams and to reflect the beams so that the reflected fast axis collimated beams propagate along substantially parallel axes.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: July 11, 2017
    Assignee: NLIGHT, INC.
    Inventors: Manoj Kanskar, Raymond Kirk Price, Jay Small, David Martin Hemenway, Zhigang Chen
  • Patent number: 9561560
    Abstract: In accordance with one aspect of the disclosure, a drill and detection system is disclosed. The system may include a drill and a thermal detector spaced apart from the drill. The drill may be directed in a first direction and the thermal detector may be directed in a second direction opposite the first direction.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: February 7, 2017
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventor: Richard F. Norman
  • Patent number: 9543734
    Abstract: A laser arrangement for generating a twice frequency-converted laser radiation is disclosed, comprising the following: an active medium which by radiation of pump light generates a first laser radiation with a first frequency; a first laser resonator inside of which the first laser radiation circulates while resonating; a first non-linear crystal which is arranged inside of the first laser resonator and is provided and established to convert the first laser radiation into a second laser radiation with a second frequency that is higher than the first frequency; a second laser resonator inside of which the second laser radiation circulates while resonating; a second non-linear crystal which is arranged inside of the second laser resonator and is provided and established to convert the second laser radiation into a third laser radiation with a third frequency that is higher than the second frequency, wherein the first laser resonator and the second laser resonator are arranged relative to each other such that th
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: January 10, 2017
    Assignee: CryLaS Crystal Laser Systems GmbH
    Inventors: Eckhard Zanger, Nariman Khajeh Kazroni, Hans-Joachim Pätzold
  • Patent number: 9537284
    Abstract: A system for self-aligning assembly and packaging of semiconductor lasers allows reduction of time, cost and testing expenses for high power density systems. A laser package mounting system, such as a modified TO-can (transistor outline can), has modifications that increase heat transfer from the active laser to a heat exchanger or other heat sink. A prefabricated heat exchanger assembly mounts both a laser package and one or more lenses. Direct mounting of a fan assembly to the package further minimizes assembly steps. Components may be physically and optically aligned during assembly by clocking and other indexing means, so that the entire system is self-aligned and focused by the assembly process without requiring post-assembly adjustment. This system can lower costs and thereby enable the use of high powered semiconductor lasers in low cost, high volume production, such as consumer items.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: January 3, 2017
    Assignee: SemiNex Corporation
    Inventors: David M. Bean, John J. Callahan
  • Patent number: 9502850
    Abstract: A gas laser device includes a housing for enclosing a laser gas. The housing includes a main body having a frame-like structure with openings formed on both sides thereof, and a pair of cover members detachably attached to cover each of the openings. The main body is provided with an upper plate and a lower plate each extending along the optical axis of the laser light, and a pair of side plates respectively connecting both ends of the upper plate and the lower plate. Each of the cover members includes a partially cylindrical member having an arc-like cross-sectional shape in a plane perpendicular to the optical axis and extending along the optical axis, and a pair of side wall members occluding both ends of the partially cylindrical member. The partially cylindrical member has a bellows portion molded into a shape having peaks and valleys each alternating along the optical axis.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: November 22, 2016
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kouji Funaoka, Yasunari Matsumoto
  • Patent number: 9466945
    Abstract: A surface-emitting semiconductor laser device includes a substrate and a semiconductor layer disposed on the substrate. The semiconductor layer includes a first semiconductor multilayer film of a first conductivity type, a first spacer layer, an active layer, a second spacer layer, and a second semiconductor multilayer film of a second conductivity type. The first semiconductor multilayer film and the second semiconductor multilayer film form a cavity. A peak of a pattern of a standing wave formed by the cavity and the center of the active layer are located at different positions.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: October 11, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Naoki Jogan, Jun Sakurai, Akemi Murakami, Takashi Kondo, Kazutaka Takeda, Junichiro Hayakawa
  • Patent number: 9461433
    Abstract: A light-emitting device can have high heat dissipation performance from a light-transmitting member and be capable of easily making alignment of the light-transmitting member and an incidence hole for light into the light-transmitting member. The light-emitting device can include: a base; a light-emitting element held by the base; a lens held by the base and disposed above the light-emitting element, configured to condense light emitted from the light-emitting element; a first tubular member disposed on the base; a second tubular member fitted into the first tubular member; a holder allowed to be inserted into the second tubular member and thereby fitted into the second tubular member and having a through hole through which light condensed by the lens passes; and a light-transmitting member formed on the holder so as to block the through hole.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: October 4, 2016
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventor: Takahiko Nozaki
  • Patent number: 9438009
    Abstract: There is presented a method of providing a wavelength tunable photon source (200), comprising bonding a first element (101) with a first mirror (106), a second element (102) with a second mirror (108) and a third element (103) with a photon emitter together in a structure enclosing an inner volume (214) being a sealed volume, and forming a bonding interface (212) which is gas-tight, so that the first mirror (106) is placed in the inner volume (214) so the first mirror (106) may move within the inner volume (214). The method provides a relatively simple way of obtaining a tunable photon source where the inner volume is sealed. The invention furthermore relates to a corresponding photon source, and use of such photon source.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: September 6, 2016
    Assignee: Danmarks Tekniske Universitet
    Inventors: Kresten Yvind, Thor Ansbæk
  • Patent number: 9397469
    Abstract: A method of operating a q-switch Er,Yb:YAB laser includes providing a pump bias current to a pump source, the pump source output directed to an Er,Yb:YAB gain medium where the Er,Yb:YAB gain medium is in a resonator cavity. The bias current at or below a lasing threshold of the Er,Yb:YAB gain medium. Providing a pump pulse to the gain medium, the pump pulse over the lasing threshold of the Er,Yb:YAB gain medium, the pump pulse causing the Er,Yb:YAB gain medium to emit a laser pulse. Reducing the pump bias current, wherein the pump current reduction brings the pump bias current to at least below the gain medium lasing threshold, the combination of the pump bias, the pump pulse, and the pump reduction having a current profile.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: July 19, 2016
    Assignee: Voxtel, Inc.
    Inventors: Anmol Nijjar, Joe LaChapelle, George Williams
  • Patent number: 9377757
    Abstract: The improvement of the performance of holographic glasses with recorded holograms as measured by a figure of merit of the holographic glasses is disclosed. The improvement in the figure of merit of the holographic glasses is obtained at least in part with the addition of arsenic in the formation of the holographic glasses. The presence of arsenic increases the figure of merit as measured at a wavelength of interest of a holographic glass with a recorded hologram as compared to a holographic glass with a recorded hologram that does not contain arsenic.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: June 28, 2016
    Assignee: PD-LD, INC.
    Inventors: Eliezer M. Rabinovich, Boris L. Volodin, Vladimir S. Ban, Elena D. Melnik
  • Patent number: 9377611
    Abstract: A light-source includes a planar array of diode-laser bars and a plurality of turning-mirrors arranged to stack beams from the diode-laser bars in the fast-axis direction to provide a first combined beam. Six plane mirrors are arranged to divide the combined beam into three beam-slices, each having one-third the slow-axis width of the first combined beam, and add the beam-slices in the fast-axis direction to provide a second combined beam having about one-third the slow-axis width and three-times the fast-axis length of those of the first combined beam. A spherical mirror and a cylindrical mirror focus the second combined beam into an optical fiber.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: June 28, 2016
    Assignee: Coherent, Inc.
    Inventors: Sergei Govorkov, John H. Jerman
  • Patent number: 9368933
    Abstract: A laser system, the laser comprising a codoped Er,Yb:YAB gain medium, the gain medium within a resonator cavity. The laser system further comprising a pumping source, the pumping source having optical output directed towards the gain medium. The laser system further comprising a laser controller, the laser controller operating the pumping source.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: June 14, 2016
    Assignee: Voxtel, Inc.
    Inventors: Anmol Nijjar, Joe LaChapelle, George Williams
  • Patent number: 9316462
    Abstract: A Small Arms Transmitter (SAT) having two optical sources for use in a military training environment is described. The SAT includes an infrared laser as a first optical source. A visible optical source, such as a visible wavelength laser, is configured as a second optical source. The visible wavelength laser can be configured to be selectively energized during a beam alignment operation. A combiner can be configured to combine the beam from the infrared laser with the beam from the visible wavelength laser to produce a combined beam. Certain techniques and/or materials can be utilized such that the SAT undergoes minimal functional change over a wide range of temperatures.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: April 19, 2016
    Assignee: Cubic Corporation
    Inventor: Deepak Varshneya
  • Patent number: 9306367
    Abstract: A device for amplifying a laser beam is provided. The device includes at least one amplifier chamber in which a laser-active material is provided, at least one transmitting optical member delimiting the amplifier chamber and being arranged at a tilt angle, ?, with respect to a plane oriented perpendicularly with respect to an optical axis of the laser beam, and at least one detection unit. The laser beam is reflected by the transmitting optical member into a back reflected laser beam, and the detection unit is arranged such that it detects the back reflected laser beam.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: April 5, 2016
    Assignee: TRUMPF Lasersystems for Semiconductor Manufacturing GmbH
    Inventors: Joachim Schulz, Oliver Mueller
  • Patent number: 9263845
    Abstract: Embodiments of an air-cooled gas laser with heat transfer resonator optics are disclosed herein. A laser configured in accordance with one embodiment includes resonator optics having an optical element, a first heat sink element in surface-to-surface contact with a first side surface of the optical element, a second heat sink element in surface-to-surface contact with a second side surface of the optical element, and a carrier member carrying the optical element and the first heat sink element, and including a forward facing surface in surface-to-surface contact with the backside surface of the optical element. The resonator optics further include first and second biasing elements biasedly coupled to the carrier member and configured to bias the first and second heat sink elements against the first side and second side surfaces, respectively, of the optical element.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: February 16, 2016
    Assignee: Universal Laser Systems, Inc.
    Inventors: Yefim P. Sukhman, Stefano J. Noto, Christian J. Risser, Mikhail E. Ryskin, Jonathan S. Marx, Robert A. Hoeffer, III
  • Patent number: 9182194
    Abstract: A fore grip for a firearm houses a light source and power source. The light source is preferably a laser and the power source is preferably one or more batteries. A first switch is connected to a PCB and can be moved to respective positions that correspond to each of various operating conditions, such as continuously on, continuously off, and on when a second switch is activated.
    Type: Grant
    Filed: February 17, 2014
    Date of Patent: November 10, 2015
    Inventor: Larry E. Moore
  • Patent number: 9147995
    Abstract: A laser assembly (10) that generates a beam (12) includes (i) a gain medium (22) that generates the beam (12) when electrical power is directed to the gain medium (22); (ii) a grating (32) positioned in a path of the beam (12); (iii) a grating arm (34) that retains the grating (32); and (iv) a mover assembly (36) that moves the grating arm (34) about a pivot axis (38). The mover assembly (36) includes a coarse mover (344) that makes large scale movements to the grating arm (34), and a fine mover (352) that makes fine movements to the grating arm (34). With this design, the mover assembly (36) can quickly and accurately move the grating (32) over a relatively large range.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 29, 2015
    Assignee: DAYLIGHT SOLUTIONS, INC.
    Inventors: Michael Pushkarsky, John Martin Algots, Satino Marrone, John Craig, Alexander Dromaretsky
  • Patent number: 9120696
    Abstract: The improvement of the performance of holographic glasses with recorded holograms as measured by a figure of merit of the holographic glasses is disclosed. The improvement in the figure of merit of the holographic glasses is obtained at least in part with the addition of arsenic in the formation of the holographic glasses. The presence of arsenic increases the figure of merit as measured at a wavelength of interest of a holographic glass with a recorded hologram as compared to a holographic glass with a recorded hologram that does not contain arsenic.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: September 1, 2015
    Assignee: PD-LD, INC.
    Inventors: Eliezer M. Rabinovich, Boris L. Volodin, Vladimir S. Ban, Elena D. Melnik
  • Patent number: 9077140
    Abstract: The invention refers to a laser device comprising a plurality of linear resonator tubes (12) for a gas to be excited, the resonator tubes being in fluidic communication with each other and forming a common tubular space, connecting elements (20) arranged in corners between adjacent resonator tubes of a common tubular space, excitation means (50) for the resonator tubes for exciting the gas in the resonator tubes for generating a laser light, mirrors (22) arranged in the connecting elements for reflecting laser light between the resonator tubes, and a partially reflecting output coupler (42) for coupling out a laser beam. The resonator tubes are arranged in the shape of a helix, surrounding a free central space. The invention also relates to a method for generating laser light with such a laser device.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: July 7, 2015
    Assignee: ALLTEC ANGEWANDTE LASERLIGHT TECHNOLOGIE GMBH
    Inventors: Kevin L. Armbruster, Brad D. Gilmartin, Peter J. Kueckendahl, Bernard J. Richard, Daniel J. Ryan
  • Publication number: 20150146210
    Abstract: To provide a wavelength tunable light source which can both ensure operation speed and reduce a drive voltage. A wavelength tunable light source according to the present invention includes a pair of reflectors at least one of which is a movable reflector, an active layer provided between the pair of reflectors, and a beam on part of which the movable reflector is formed and which is supported by a support member. The beam includes a blade part projecting between the support member and the movable reflector in a direction intersecting a stretching direction of the beam, and a center of gravity of the beam in the stretching direction is located at a distance less than half a length of the beam in the stretching direction.
    Type: Application
    Filed: October 30, 2014
    Publication date: May 28, 2015
    Inventor: Koichiro Nakanishi
  • Publication number: 20150146212
    Abstract: A surface emitting laser includes a lower reflector, an active layer, a gap portion, an upper reflector, and a driving unit. The lower reflector, the active layer, the gap portion, and the upper reflector are arranged in that order. The surface emitting laser is capable of varying a wavelength of emitted light by changing a distance between the upper and lower reflectors. The driving unit moves one of the upper and lower reflectors in an optical axis direction of the emitted light. At least one of the upper and lower reflectors includes a stacked body in which first layers and second layers are alternately stacked, the second layers having a refractive index lower than a refractive index of the first layers, outermost layers of the stacked body being the first layers, and a third layer provided on at least one end of the stacked body.
    Type: Application
    Filed: November 24, 2014
    Publication date: May 28, 2015
    Inventors: Toshimitsu Matsuu, Takeshi Uchida
  • Patent number: 9042424
    Abstract: A silicon-based thermal energy transfer apparatus that aids dissipation of thermal energy from a heat-generating device, such as an edge-emitting laser diode, is provided. In one aspect, the apparatus comprises a silicon-based base portion having a first primary surface and a silicon-based support structure. The silicon-based support structure includes a mounting end and a distal end opposite the mounting end with the mounting end received by the base portion such that the support structure extends from the first primary surface of the base portion. The support structure includes a recess defined therein to receive the edge-emitting laser diode. The support structure further includes a slit connecting the distal end and the recess to expose at least a portion of a light-emitting edge of the edge-emitting laser diode when the edge-emitting laser diode is received in the support structure.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: May 26, 2015
    Inventors: Gerald Ho Kim, Jay Eunjae Kim
  • Publication number: 20150139264
    Abstract: We have demonstrated a novel Sagnac loop and micro-ring based laser cavity which is simple and reliable, with accurately controlled reflectivity and negligible excess loss. The resonant wavelength of a 2 ?m radius micro-ring is shown to be lithographically controlled to a standard deviation of 3.6 nm. Both C- and O-Band lasers based on Sagnac loop mirror and micro-ring cavity have been demonstrated. The lasers are shown to be able to be modulated at 40 Gb/s.
    Type: Application
    Filed: November 20, 2014
    Publication date: May 21, 2015
    Inventors: Yi Zhang, Shuyu Yang, Michael J. Hochberg, Thomas Baehr-Jones
  • Publication number: 20150131693
    Abstract: A method for controlling the parallelism of first and second surfaces that define an optically resonant cavity is disclosed. The surfaces are separated by a first separation that is based on a support that holds the first surface relative to the second surface. The support comprises a first material and includes one or more regions in which the material stress of the first material is heat tuned to locally induce a stress gradient that results in a localized deformation. By controlling the locations and amounts of one or more localized deformation regions, the orientation of the first surface relative to the second surface is controlled.
    Type: Application
    Filed: January 14, 2015
    Publication date: May 14, 2015
    Inventor: Dustin Wade Carr
  • Publication number: 20150131692
    Abstract: A semiconductor laser module 1 is mainly composed of a package 3, a semiconductor laser 5, lenses 7, 9, 13, reflecting mirrors 11, an optical fiber 15, and the like. The package 3 is composed of a bottom part and side surfaces 19a, 19b. The side surfaces 19a, 19b stand erect approximately vertical to the bottom part of the package. In the semiconductor laser module 1, a plurality of semiconductor laser installation surfaces 17 are formed in a step-like shape. On each semiconductor laser installation surface 17, a semiconductor laser 5 is installed. A lens 7 is arranged at the anterior (in the emission direction) of the semiconductor laser 5. Moreover, a lens 9 is arranged further to the anterior. A reflecting mirror 11 is fixed to the side surface 19a, which is provided facing the emission direction of the semiconductor laser 5.
    Type: Application
    Filed: November 7, 2014
    Publication date: May 14, 2015
    Inventors: Naoki HAYAMIZU, Yuta ISHIGE, Toshio KIMURA
  • 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: 9008134
    Abstract: A variable wavelength diode according to the inventive concept includes a resonator and a plurality of cylindrical lenses. The resonator includes slab waveguides of which resonance lengths are different from each other. The slab waveguides are disposed on a planar light wave circuit (PLC). Thus, the variable wavelength diode realizes a high variation speed and a continuous variation of a beam at the same time.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: April 14, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventor: Kwang Ryong Oh
  • Patent number: 9008147
    Abstract: A silicon-based thermal energy transfer apparatus that aids dissipation of thermal energy from a heat-generating device, such as an edge-emitting laser diode, is provided. In one aspect, the apparatus comprises a base portion and a support portion. The base portion is made of silicon and includes a first primary surface. The first primary surface includes at least first and second V-notch grooves thereon. The support portion is made of silicon and includes at least first and second edges that are interlockingly received in the first and second V-notch grooves when the support portion is mounted on the base portion.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: April 14, 2015
    Inventors: Gerald Ho Kim, Jay Eunjae Kim
  • 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: 8989224
    Abstract: There is disclosed an apparatus for femtosecond laser optically pumped by a laser diode pumping module that is able to mechanically couple optical mounts for mounting optical mounts to each other by using a bar with a low thermal expansion coefficient and to form a light pumping module distant from a laser platform or a case, to provide a stable mode locking for an ultrashort laser and to enhance a power stability and a beam stability.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: March 24, 2015
    Assignee: Korea Electrotechnology Research Institute
    Inventors: Guang Hoon Kim, Uk Kang, Ju Hee Yang, Elena Sall, Sergey Chizhov, Andrey Kulik
  • Publication number: 20150071322
    Abstract: In a laser (12, 18) with a laser resonator (13), the laser resonator (13) comprises a non-linear optical loop mirror (1, 1?), NOLM, which is adapted to guide counter-propagating portions of laser pulses, and to bring the counter-propagating portions of laser pulses into interference with each other at an exit point (4) of the NOLM (1, 1?). The invention is non-linear optical loop mirror (1, 1?) comprises a non-reciprocal optical element (7, 7?) on a linear section of the NOLM. In addition to the NOLM, the laser resonator (13) comprises a linear cavity section. The linear section of the NOLM and the linear cavity section (19) a reassembled on a microoptical bench (112) or within a cylindrical carrier (112).
    Type: Application
    Filed: September 4, 2014
    Publication date: March 12, 2015
    Inventors: Wolfgang HAENSEL, Ronald HOLZWARTH, Ralf DOUBEK, Michael MEI, Martin ENGELBRECHT
  • 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: 8958454
    Abstract: The slant of a first mirror (21), the slant of a second mirror (22), and the laser output when the slant of the first mirror (21) is an initial value and when the slant of the first mirror (21) is made to move from the initial value by exactly a predetermined value in the positive and negative directions are used as the basis to calculate a first approximation curve of the laser output with respect to the slant of the first mirror (21) and second approximation curve of the laser output with respect to the slant of the second mirror (22), set a value which corresponds to a local maximum value of the first approximation curve as the slant of the first mirror (21), and set a value which corresponds to a local maximum value of the second approximation curve as the slant of the second mirror (21).
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: February 17, 2015
    Assignee: Fanuc Corporation
    Inventors: Takanori Sato, Takafumi Murakami
  • Publication number: 20150036711
    Abstract: The present invention provides a surface emitting laser that provides a sufficient optical output and is suitable as a light source intended for electrophotographic apparatuses, and a surface-emitting-laser array and an image forming apparatus each including the surface emitting laser. The surface emitting laser includes a first stepped structure on a front surface of a front mirror. In the first stepped structure, a difference L between an optical path length in a first area and an optical path length in a second area satisfies the following expression: (¼+N)?<|L|<(¾+N)? where N is an integer.
    Type: Application
    Filed: October 21, 2014
    Publication date: February 5, 2015
    Inventor: Mitsuhiro Ikuta
  • Patent number: 8948220
    Abstract: A microcrystal laser assembly including a gain-crystal includes a frame having a high thermal conductivity. The frame has a base with two spaced apart portions extending from the base. The gain-crystal has a resonator output minor on one surface thereof. The gain-crystal is supported on the spaced-apart portions of the frame in the space therebetween. Another resonator minor is supported in that space, spaced apart from the output mirror, on a pedestal attached to the base of the frame. The pedestal and the frame have different CTE. Varying the frame temperature varies the spacing between the resonator minors depending on the CTE difference between the pedestal and the frame.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: February 3, 2015
    Assignee: Coherent GmbH
    Inventor: Stefan Spiekermann