Coherent light generators inventions 07/08

20080181261 - Electromagnetic energy output system: An apparatus having an excitation source that includes at least one laser diode and also having a handpiece with a disposable, bendable tip cannula is disclosed.... Agent: Stout, Uxa, Buyan & Mullins LLP

20080181262 - Method for adjusting spectral line width of narrow-band laser: An upper limit and a lower limit are preliminarily set for a spectral line width common to a plurality of narrow-band laser devices. When delivered or subjected to maintenance, the narrow-band laser device is caused to laser oscillate to detect its spectral line width before it is used as a... Agent: Wenderoth, Lind & Ponack, L.L.P.

20080181264 - Laser light source device: A laser light source device includes: a laser light source, a first optical device that returns some of a beam emitted from the laser light source so as to induce oscillation at a particular wavelength between some of the beam and the laser light source so that the beam emitted... Agent: Dickinson Wright PLLC

20080181263 - Process and apparatus for a wavelength tuning source: An apparatus and source arrangement for filtering an electromagnetic radiation can be provided which may include at least one spectral separating arrangement configured to physically separate one or more components of the electromagnetic radiation based on a frequency of the electromagnetic radiation. The apparatus and source arrangement may also have... Agent: Dorsey & Whitney LLP Intellectual Property Department

20080181265 - Wavelength selective and tunable semiconductor laser device with coupled cavities: An array of optically coupled cavities (called micro-cavities) of a semiconductor laser are defined by either an etch and/or by a native oxide of an aluminum-bearing III-V semiconductor material and are arranged serially end-to-end along the longitudinal direction. An etch and/or native oxide defines a refractive index change for the... Agent: Patzik, Frank & Samotny Ltd.

20080181266 - Enhanced seeded pulsed fiber laser source: A pulsed laser light source for producing amplified light pulses is provided. It includes a three-port optical circulator connected to a first, second, and third waveguide branch, a seed module for generating a pulsed light and propagating the light along the first waveguide branch to the first port of the... Agent: Merchant & Gould PC

20080181267 - Optical device and method for manufacturing the same: An optical device, including: a surface emitting semiconductor laser; and a photodetection device for detecting part of laser light emitted from the surface emitting semiconductor laser; the photodetection device including a light absorbing layer and a first contact layer; and the first contact layer being formed with a semiconductor having... Agent: Oliff & Berridge, PLC

20080181269 - Methods and systems for generating pulse trains for material processing: Systems and methods generate laser pulse trains for material processing. In one embodiment, stable laser pulse trains at high repetition rates are generated from a continuous wave (CW) or quasi-CW laser beams. One or more laser pulses in the laser pulse train may be shaped to control energy delivered to... Agent: Electro Scientific Industries/stoel Rives, LLP

20080181268 - Pre-amplifier for detection lasers within laser ultrasonic inspection systems: A pulse detection laser is provided. The pulse detection laser includes a single frequency oscillator, a continuous pre-amplifier, and a pulsed amplifier. The single frequency oscillator generates a seed laser beam and is optically coupled to the continuous preamplifier. The continuous pre-amplifier amplifies the seed laser to produce an intermediate... Agent: Bracewell & Giuliani LLP

20080181270 - Packaging structure for the horizontal cavity surface emitting laser diode with monitor photodiode: A package structure for horizontal cavity surface emitting laser diode with monitor photodiode chip includes a header with a plurality of conductive pins, where three conductive pins extend onto the surface of the header. One of the conductive pins is attached to a stage with a slope and a monitor... Agent: Hdsl

20080181271 - Laser array device and laser array control method: In a laser array device, each laser of a transmitting unit 30 and each optical detector of a receiving unit 20 are arranged to be adjacent to each other. A plurality of unit modules 40 are formed so that each unit module 40 contains adjoining laser 30-1 and optical detector... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20080181272 - Method and apparatus for controlling output power levels of a laser used for optical data transmission based on data rate-speed optical feedback: High-speed measurements of the output power level of a laser are obtained by using a high-speed laser output power monitoring device that is capable of producing an electrical feedback signal having an amplitude that varies as the output power level of the laser varies. A high-speed amplitude detector receives the... Agent: Kathy Manke Avago Technologies Limited

20080181273 - Laser diode driving circuit: A disclosed laser diode driving circuit causes a laser diode to emit light by varying a current value of a current source in accordance with a control signal input externally and supplying a current that is the same as or proportional to the current value to the laser diode. The... Agent: Dickstein Shapiro LLP

20080181274 - Nitride semiconductor laser element: A nitride semiconductor laser element comprises; a nitride semiconductor layer that includes a first nitride semiconductor layer, an active layer, and a second nitride semiconductor layer, and that has a cavity with end faces, and a protective film formed on at least one end face of the cavity, wherein the... Agent: GlobalIPCounselors, LLP

20080181275 - Semiconductor light emitting device and method of manufacturing same: According to an aspect of the embodiment, there is provided a semiconductor light emitting device including: a gallium nitride substrate; a multilayer film of nitride semiconductors provided on the gallium nitride substrate; a first film including a first silicon nitride layer; and a second film including a second silicon nitride... Agent: Banner & Witcoff, Ltd. Attorneys For Client No. 000449, 001701

20080181276 - Semiconductor laser diode and its fabrication process: A semiconductor laser diode device with small driving current and no distortion in the projected image. The semiconductor laser diode includes an n-GaAs substrate and, an n-cladding layer on the n-GaAs substrate, an active layer, a p-clad layer, a multilayer formed from sequentially laminated p-contact layers, and a ridge formed... Agent: Antonelli, Terry, Stout & Kraus, LLP

20080181277 - Semiconductor laser and method for producing the same: A semiconductor laser comprising a laser-active layer sequence (1) having a first main face (1003), on which is arranged a heat conducting layer (3) containing carbon nanotubes (30) and a method for producing such a semiconductor laser.... Agent: Cohen Pontani Lieberman & Pavane LLP

20080181278 - Electromagnetic energy output system: An apparatus having an excitation source that includes at least one laser diode and also having a handpiece with a disposable, bendable tip cannula is disclosed.... Agent: Stout, Uxa, Buyan & Mullins LLP

20080181279 - Optical device and system and method for fabricating the device: The present invention discloses an optical device able to luminesce, whereby the optical device comprises, inter alia, a luminescent source that is directly or indirectly mechanically coupled to a low-order mode waveguide, such that light emitting from the luminescent source is optically coupled into the low-order mode waveguide. In embodiments... Agent: Weingarten, Schurgin, Gagnebin & Lebovici LLP

20080175278 - Narrow linewidth injection seeded q-switched fiber ring laser based on a low-sbs fiber: A narrow linewidth injection-seeded Q-switched fiber ring laser based on a low-SBS optical fiber. High peak powers are achieved through the use of a single-clad erbium doped fiber with an acoustic waveguide. 12.5 μJ per pulse (250 ns pulse width) is achieved before a weakened form of stimulated Brillouin scattering... Agent: Jillian Lord

20080175279 - Light source apparatus: The present invention relates to a light source apparatus having a structure to enable a short pulse optical output with high pulse energy or a high pulse peak equivalent to that of a Q switch laser light source. The light source apparatus comprises a seed light source, a pre-stage optical... Agent: Mcdermott Will & Emery LLP

20080175281 - External cavity resonator type tunable light source which can be easily manufactured and which is capable of wavelength sweeping at high speed: A collimator lens converts light beams emitted from a low reflectance facet of a semiconductor laser into parallel light beams. A diffraction grating receives and diffracts the light beams at a predetermined incident position and a predetermined angle of a diffraction face. A turnable mirror has a mirror surface which... Agent: Frishauf, Holtz, Goodman & Chick, P.c.

20080175280 - Wavelength tuning source based on a rotatable reflector: An apparatus and source arrangement for filtering an electromagnetic radiation can be provided which may include at least one spectral separating arrangement configured to physically separate one or more components of the electromagnetic radiation based on a frequency of the electromagnetic radiation. The apparatus and source arrangement may also have... Agent: Dorsey & Whitney LLP Intellectual Property Department

20080175282 - Wavelength conversion device: The energy conversion efficiency from light that is to be converted to converted light of a wavelength conversion device is adjusted so as always to be kept stably at a maximum. The wavelength conversion device is provided with a laser light source 10 for generating a fundamental wave light, a... Agent: Pearne & Gordon LLP

20080175283 - Wavelength conversion module: A wavelength conversion module according to the present invention includes an external resonator, a semiconductor laser module and a wavelength conversion device for converting a wavelength of light output from the semiconductor laser module into a shorter wavelength. This wavelength conversion device includes at least one of a nonlinear crystal... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.c.

20080175284 - Light emitting device for visual applications: A light emitting device comprises a waveguide having an electrically pumped gain region, a nonlinear medium, and an inclined mirror. Light pulses emitted from the gain region are reflected by the inclined mirror into the nonlinear medium in order to generate frequency-doubled light pulses. The gain region and the inclined... Agent: Venable LLP

20080175285 - Forced wavelength chirping in semiconductor lasers: Methods of controlling semiconductor lasers are provided where, the time-averaged optical spectrum of the semiconductor laser is broadened by modulating the drive current at a relatively high frequency. Generally, the frequency of the drive current modulation is high enough to induce wavelength chirping within the data periods encoded in the... Agent: Corning Incorporated

20080175287 - Fiber pulse laser apparatus and method of control the same: A method of controlling a pulse output in a master oscillator-power amplifier type fiber pulse laser apparatus comprising a master oscillator unit and a power amplifier unit connected to the master oscillator unit, includes starting the master oscillator unit before starting the power amplifier unit.... Agent: Sughrue Mion, Pllc

20080175286 - Light source device, control method therefor, lighting device, monitor device, and image display device: A light source device includes a light source for emitting a laser beam, a power supply drive circuit for pulse-driving the laser beam, a wavelength conversion element for converting a wavelength of a laser beam into a predetermined wavelength, a photodetector for detecting an intensity of the laser beam emitted... Agent: Oliff & Berridge, Plc

20080175288 - Disk laser including an amplified spontaneous emission (ase) suppression feature: A laser system may include a first portion of laser host material adapted for amplification of laser radiation and a second portion of laser host material surrounding the first portion which may be adapted for suppression of ASE. The first portion of laser host material and the second portion of... Agent: Charles L. Moore Moore & Van Allen Pllc

20080175289 - Vertical cavity laser faceplate with diffraction grating: A laser having a laser cavity is disclosed that does not require conventional dielectric mirrors or as-grown reflectors. Instead, a diffraction grating and total internal reflection system is used to define a laser cavity. Within the laser cavity, the laser emission travels in a zigzag pattern. The diffraction grating provides... Agent: Ying Chen Chen Yoshimura LLP

20080175290 - Semiconductor device and method for fabricating the same: A method for fabricating a semiconductor device includes dividing an off substrate so that a first edge face, the off substrate having an operation layer on a main surface of the off substrate, and cutting the off substrate to form a second edge face crossing the first edge face so... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20080175292 - Laser amplifier and method of making the same: The present invention includes a laser amplifier and a method of making the same. The laser amplifier of the present invention includes a gain medium layer having a first index of refraction, and a coupling layer optically coupled to the gain medium. In the various embodiments described herein, the coupling... Agent: Kennedy, Ltd.

20080175293 - Semiconductor laser device: To provide a semiconductor laser device capable of reducing the power consumption and enhancing the reliability. The semiconductor laser device includes: a crystal substrate; a first clad layer of a first conductivity type formed on the crystal substrate; a first light guide layer of the first conductivity type formed on... Agent: Amin, Turocy & Calvin, LLP

20080175291 - Semiconductor laser, method of manufacturing semiconductor device, optical pickup, and optical disk apparatus: Disclosed herein is a semiconductor laser including: a first clad layer of a first conduction type; an active layer over said first clad layer; a saturable absorbing layer over said active layer; and a second clad layer of a second conduction type over said saturable absorbing layer; at least said... Agent: Sonnenschein Nath & Rosenthal LLP

20080175294 - Semiconductor optical devices, systems and methods of manufacturing the same: A semiconductor optical device includes a silicon substrate and a Group III-V semiconductor gain layer. The Group III-V semiconductor gain layer is formed on the silicon substrate. The silicon substrate or the Group III-V semiconductor gain layer has a dispersion Bragg grating formed therein. In a method of manufacturing a... Agent: Harness, Dickey & Pierce, P.L.C

20080175295 - Semiconductor laser device: The semiconductor laser device includes first and second light emitting portions each including a first cladding layer, an active layer and a second cladding layer, and each having a stripe structure. The stripe structure of the first light emitting portion has a section having a width changing along a resonator... Agent: Mcdermott Will & Emery LLP

20080175296 - Laser system comprising a number of longitudinally pumped laser-active solid bodies: The aim of the invention is to obtain a laser system with the highest possible power that operates as stably as possible. This object is achieved in the case of a laser system by the laser radiation field passing through at least two laser-active solid bodies of identical material disposed... Agent: Lipsitz & Mcallister, Llc

20080175297 - Two phase reactor: A two phase reactor includes a source of liquid reactant and a source of gas reactant. A chamber has an inlet coupled to the source of gas reactant and a flat jet nozzle coupled to the source of the liquid reactant.... Agent: Law Office Of Dale B. Halling, Llc

20080170595 - Speckle reduction laser: Provided is a speckle reduction laser that emits laser light by resonating light generated from an active layer. The speckle reduction laser includes a mode changing unit having an electro-optical material layer disposed in a resonance path of the laser light, wherein a resonance mode of the laser light is... Agent: Sughrue Mion, PLLC

20080170596 - Method and apparatus for obtaining single longitudinal mode (slm) radiation from a pulsed nd:yag laser: The invention includes a method for seeding and stabilizing an optical device, including a continuous wave laser, a pulsed laser or a parametric system, having an adjustable cavity length and an output. The illustrated embodiment is a Q-switched Nd:Yag or Brilliant A pulsed laser, but the principles of the invention... Agent: Daniel L. Dawes Myers Dawes Andras & Sherman LLP

20080170597 - Method and apparatus for seeding and stabilizing an optical device: A method for seeding and stabilizing an optical device, wherein the optical device includes one of a continuous wave laser, a pulsed laser, and a parametric system, the method including seeding the optical device with a seed signal, generating a feedback signal from an output of the optical device, and... Agent: Myers Dawes Andras & Sherman, LLP

20080170598 - Cascaded injection resonator for coherent beam combining of laser arrays: The invention provides a cascaded injection resonator for coherent beam combining of laser arrays. The resonator comprises a plurality of laser emitters arranged along at least one plane and a beam sampler for reflecting at least a portion of each laser beam that impinges on the beam sampler, the portion... Agent: Quarles & Brady

20080165809 - Laser-induced optical wiring apparatus: A laser-induced optical wiring apparatus is provided wherein optical wiring is realized by digital operations of a laser oscillator. The apparatus includes optical ring resonator formed of a loop-shaped optical waveguide on substrate. At least two optical gain sections are provided on the optical ring resonator. When each optical gain... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080165810 - Laser light source device, and image device using the same: A laser light source device includes a light source section, and a drive current controller. The light source section includes a first and second fundamental light source component, and a wavelength conversion component. The first and second fundamental light source components emit first and second fundamental wave lights according to... Agent: Oliff & Berridge, PLC

20080165811 - Surface emitting-semiconductor laser component featuring emission in a vertical direction: A surface-emitting semiconductor laser component, in particular an electrically pumped semiconductor laser component, featuring emission in a vertical direction. The component is provided for the generation of laser radiation by means of an external optical resonator (4, 5). The component comprises a semiconductor body with a semiconductor layer sequence (2)... Agent: Thomas Langer Cohen Pontani Lieberman & Pavane

20080165812 - Wavelength converter and two-dimensional image display device: By causing a polarization direction of a laser light source for generating an excitation light and that of a light emitted from an oscillator to orthogonally intersect, the deterioration of an excitation light source by an ASE is suppressed by a polarization splitting element provided between a laser resonator and... Agent: Wenderoth, Lind & Ponack L.L.P.

20080165813 - Method and apparatus for controlling laser modulation based on measurements of average laser output power: Laser modulation is controlled by using a measurement of the average output power level of the laser to adjust the amplitude of the modulation current as necessary to prevent the laser from being over- or under-modulated and to adjust the amplitude of the bias current as necessary to maintain the... Agent: Kathy Manke Avago Technologies Limited

20080165814 - Pulse oscillating type solid laser unit and laser process unit: A pulse oscillating type solid laser unit that has a laser unit body whose exciting source is a laser diode that emits light in a principal energy absorbing spectrum of a solid laser activated media, and characterized by that prior to radiating laser light outside the laser unit body as... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20080165815 - Light source device, projector device, monitor device, and lighting device: The controller 170 controls the output power of the semiconductor laser device 100a depending on the temperature of the semiconductor laser device 100a acquired by the temperature sensor 130. The controller 170 references the correspondence table 510 when the sensor temperature Ts is obtained, obtains the output power PWs corresponding... Agent: Oliff & Berridge, PLC

20080165816 - Enhanced beam quality from a laser rod using interstitial dopants: A laser rod is provided having a tailored gain profile such that the quality of the output beam is enhanced. The laser rod has a concentration of dopant ions having a first valence that is relatively high at the center of the rod and decreases to the surface of the... Agent: Leonard A. Alkov, Esq. Raytheon Company

20080165817 - Reverse oxidation post-growth process for tailored gain profile in solid-state devices: A laser rod is provided having a tailored gain profile such that the quality of the output beam is enhanced. The laser rod has a concentration of active substitutional ions that is relatively high at the center of the rod and decreases to the surface of the rod. The laser... Agent: Leonard A. Alkov, Esq. Raytheon Company

20080165818 - Semiconductor optical device: A semiconductor optical device includes an active layer made of III-V compound semiconductor containing Ga, As and N; a diffraction grating layer which is made of III-V compound semiconductor and is provided on the active layer; and a cladding layer which is made of III-V compound semiconductor and is provided... Agent: Smith, Gambrell & Russell

20080165819 - Multiwavelength quantum dot laser element: A multiwavelength quantum dot laser element is provided. A perpendicular stack of quantum dot active regions with different light emitting wavelengths is employed, and thickness, material composition, and quantum dot size of each of the quantum dot active regions are modulated, so as to form various laser oscillation conditions. When... Agent: Rabin & Berdo, PC

20080165820 - Method and apparatus for producing grating, and dfb solid-state dye laser based on the grating: To provide a DFB solid-state dye laser including a grating having Moire interference fringes. A DFB solid-state dye laser element includes: a laser medium containing an organic dye; and a distribution feedback type resonance unit having a third grating including a Moire fringe corresponding to an overlap between a first... Agent: Oliff & Berridge, PLC

20080165821 - Laser resonator comprising an internal beam splitter: A simple and compact laser resonator is proposed which makes it possible to symmetrically operate a gain medium, preferably a semiconductor, which possesses more than one channel of emission. As a result higher output powers and/or better beam qualities and/or better spectral characteristics can be achieved. The resonator is very... Agent: Ronald S. Lombard Patents And Trademarks

20080165822 - Laser light irradiation apparatus and laser light irradiation method: Laser light is emitted from a laser oscillator, and the laser light is made to enter a beam expander optical system including a concave lens through a correction lens. The laser oscillator, the correction lens and the concave lens are disposed so that, when an emission point of the laser... Agent: Nixon Peabody, LLP

20080159339 - All-solid state uv laser system: The present invention relates to an all-solid state UV laser system comprising at least one semiconductor laser (10) in a VECSEL configuration. The gain structure (3) in this semiconductor laser (10) emits fundamental radiation in a wavelength range which can be frequency doubled to wavelengths in the UV region. The... Agent: Philips Intellectual Property & Standards

20080159340 - External cavity laser tuning element dither servo control: According to embodiments of the present invention, an external cavity laser includes one or more tuning elements. At least one modulated voltage signal or dither is used to lock the transmission peak of the two tuning elements to each other. The wavelength of the laser also may lock onto the... Agent: Blakely Sokoloff Taylor & Zafman

20080159341 - Tunable quantum cascade lasers and photoacoustic detection of trace gases, tnt, tatp and precursors acetone and hydrogen peroxide: Methods and apparatus for broad tuning of single wavelength quantum cascade lasers and the use of light output from such lasers for highly sensitive detection of trace gases such as nitrogen dioxide, acetylene, and vapors of explosives such as trinitrotoluene (TNT) and triacetone triperoxide (TATP) and TATP's precursors including acetone... Agent: Cislo & Thomas LLP

20080159342 - Coherent terahertz radiation source: A THz radiation source comprising a dual waveguide heterostructure is provided. The dual waveguide heterostructure includes an optical waveguide contained within a larger THz waveguide layered structure. The radiation source provides a coherent guided wave of THz radiation which is generated via difference frequency mixing in a gain medium with... Agent: Foley & Lardner LLP

20080159343 - Intracavity wavelength conversion solid-state laser generator: Fundamental laser light having a wavelength of 1,064 nm, for example, is generated by a solid-state laser medium. The fundamental laser light is reflected by a flat mirror and amplified again passing through a Q-switch, a solid-state laser medium, a Q-switch, a Q-switch, a solid-state laser medium, and a Q-switch.... Agent: Sughrue Mion, Pllc

20080159344 - Apparatus and method for producing light using laser emission: An apparatus is provided that includes a laser that produces light at a first wavelength, an optical element that converts the light at the first wavelength received at an input end thereof into light at a second wavelength, and an optical interface proximate the input end of the optical element... Agent: Texas Instruments Incorporated

20080159345 - Near infrared microbial elimination laser system: A dual wavelength laser in the low infrared electromagnetic spectrum is disclosed for destruction of bacteria via photo-damage optical interactions through direct selective absorption of optical energy by intracellular bacterial chromophores. The dual wavelength (NIMELS) laser includes an optical assembly and all associated components necessary for the housing of two... Agent: Mcdermott Will & Emery LLP

20080159346 - Bragg fibers in systems for the generation of high peak power light: The present invention generally concerns the use of Bragg optical fibers in chirped pulse amplification systems for the production of high-pulse-energy ultrashort optical pulses. A gas-core Bragg optical fiber waveguide can be advantageously used in such systems to stretch the duration of pulses so that they can be amplified, and/or... Agent: Carr & Ferrell LLP

20080159347 - Method and apparatus for a low parasitic capacitance butt-joined passive waveguide connected to an active structure: Undoped layers are introduced in the passive waveguide section of a butt-joined passive waveguide connected to an active structure. This reduces the parasitic capacitance of the structure.... Agent: Kathy Manke Avago Technologies Limited

20080159348 - High efficiency thermoelectric cooler control system: A temperature control system is provided for efficiently controlling the temperature of an optical transmitter such as a laser diode. The temperature control system of the present invention reduces power consumption and achieves a higher efficiency by employing a voltage controller and a high-efficiency DC-DC step-down converter between the TEC... Agent: Workman Nydegger

20080159349 - Semiconductor laser driving device, optical head, optical disk device, and semiconductor laser driving method: A semiconductor laser driving device includes a current supply unit supplying current to a semiconductor laser; a first control unit controlling the current supply unit to supply a first current which is half or less of a lasing threshold of the semiconductor laser; and a second control unit controlling the... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.c.

20080159350 - Semiconductor laser device: A semiconductor laser device includes an active layer, a pair of guiding layers sandwiching the active layer, and a pair of cladding layers sandwiching the active layer and the pair of guiding layers. The pair of guiding layers are InGaAsP lattice-matched to GaAs. The pair of cladding layers are AlGaAs.... Agent: Leydig Voit & Mayer, Ltd

20080159351 - Mechanically tunable elastomeric optofluidic distributed feedback dye lasers: The invention relates to a microfluidic dye laser including a pump light source configured to provide light having a pump light wavelength. The microfluidic dye laser also includes an elastomer substantially optically transparent at the pump light wavelength and at a microfluidic dye laser wavelength. A microfluidic channel configured to... Agent: Hiscock & Barclay, LLP