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Coherent light generators September class, title,number 09/09

20090238215 - Method of inducing refractive index structures in a micro-structured fiber, a micro-structured fiber and an article: Refractive index modifications such as e.g. Fiber Bragg gratings in micro-structured Fiber are according to an aspect of the invention fabricated by first filling and/or purging the holes of the micro-structured fiber with inert gas or by evacuation and, optionally subsequently scaling the ends. Alternatively, the ends of the micro-structured... Agent: Buchanan, Ingersoll & Rooney PC

20090238216 - Rare-earth doped optical fiber, method of producing the same, and fiber laser: where Pp(r) represents an electric field distribution in an exciting wavelength, Ps(r) represents an electric field distribution in wavelengths of spontaneous emission and/or stimulated emission carried in the core, D(r) (mass %) represents a rare-earth dopant distribution, ro represents a core center, and rc represents a core diameter.... Agent: Sughrue Mion, PLLC

20090238217 - Method and apparatus for wavelength tuning laser diodes: A method is presented for shaping the spectral response of volume holographic grating elements by applying controlled thermal energy. The methods allow generating continuous or discontinuous grating periods from a fixed grating period. The methods are applicable to optical feedback into optical sources such as light emitting diodes, lasers and... Agent: Ondax, Inc.

20090238219 - Optical module: An optical module includes a semiconductor laser for output light with a wavelength, a temperature stabilization unit arranged for adjusting temperature of the semiconductor laser, and a controller for controlling a current injected to the semiconductor leaser by the use of a first function in accordance with changing of the... Agent: Staas & Halsey LLP

20090238218 - Polarization stable lasers: Techniques, devices and applications of polarization stable lasers to provide laser operations against changes, variations or fluctuations in optical polarization in a laser cavity.... Agent: Fish & Richardson, PC

20090238221 - Laser equipment: Laser equipment for outputting output lights having different wavelengths includes: a substrate; an excitation light generation element for emitting excitation lights including surface emitting laser elements and disposed on the substrate; and a light converter having a pair of second reflection layers and a solid laser medium layer, both of... Agent: Posz Law Group, PLC

20090238222 - Laser system employing harmonic generation: A laser system provides harmonic generation in a laser beam pulse. In another aspect of the present invention, a laser operably remits a laser pulse, a gaseous optical medium operably creates third or greater harmonic generation in the pulse, and a controller characterizes and compensates for distortions in the pulse.... Agent: Harness, Dickey & Pierce, P.L.C

20090238220 - Reduction of surface heating effects in nonlinear crystals for high power frequency conversion of laser light: A device for generating a high power frequency converted laser beam includes a nonlinear optical crystal having an entrance surface and a curved surface. The nonlinear optical crystal is configured to receive at least one laser beam at the entrance surface and provide a frequency converted beam through a frequency... Agent: Townsend And Townsend And Crew, LLP

20090238223 - Laser irradiation apparatus: A laser irradiation apparatus is provided in which the occurrence of adverse effects on an object to be irradiated with a laser beam due to the difference in the polarization state between pulsed laser beams can be prevented or significantly reduced when the pulsed laser beams emitted from two laser... Agent: Cook Alex Ltd

20090238224 - Directly modulated laser with isolated modulated gain electrode for improved frequency modulation: A DBR laser, such as a semiconductor DBR laser is disclosed having improved frequency modulation performance. The laser includes a split gain electrode and a tuning electrode. A modulating current encoding a data signal is injected into a first section of the gain electrode whereas a substantially DC bias voltage... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090238225 - 6k pulse repetition rate and above gas discharge laser system solid state pulse power system improvements: A method and apparatus for operating a very high repetition gas discharge laser system magnetic switch pulsed power system is disclosed, which may comprise a solid state switch, a charging power supply electrically connected to one side of the solid state switch; a charging inductor electrically connected to the other... Agent: Matthew K. Hillman Cymer, Inc., Legal Dept.

20090238226 - Driver circuit for semiconductor laser diode driven in differential mode: A driver circuit for a semiconductor laser diode (LD) is disclosed, in which the driver circuit drives the LD in the differential mode and lowers the power consumption thereof. The driver circuit includes a differential unit to provide the modulation current to the LD, a voltage converter to provide a... Agent: Venable LLP

20090238227 - Semiconductor light emitting device: A semiconductor light emitting device is made of a group III nitride semiconductor having a major growth surface defined by a nonpolar plane or a semipolar plane, and has a quantum well layer containing In in a light emitting layer. A strain compensation layer made of a group III nitride... Agent: Rabin & Berdo, PC

20090238228 - Quantum dot based semiconductor waveguide devices: Methods and devices for providing a multiwavelength laser which may be used for multicasting and other optical communications uses. The present invention provides a quantum dot based multiwavelength laser with a monolithic gain block. The Fabry-Perot gain block has both upper and lower InP cladding layers. The laser system has... Agent: Brion Patent Agency

20090238229 - Nitride semiconductor laser element and external-cavity semiconductor laser device: Disclosed are a nitride semiconductor laser element including a light emitting portion made of a nitride semiconductor, and an external-cavity semiconductor laser device using it. In the nitride semiconductor laser element, a coat film made of silicon oxynitride is formed on the light emitting portion, and the reflectance of the... Agent: Birch Stewart Kolasch & Birch

20090238230 - Semiconductor laser apparatus: A p-type pad electrode in a red semiconductor laser device and a first terminal are connected through a wire. A p-type pad electrode in an infrared semiconductor laser device and a second terminal are connected through a wire. A p-electrode in a blue-violet semiconductor laser device and a third terminal... Agent: Mcdermott Will & Emery LLP

20090238233 - Optical die structures and associated package substrates: Optical die structures and associated package substrates are generally described. In one example, an electronic device includes a package substrate having a package substrate core, a dielectric layer coupled with the package substrate core, and one or more input/output (I/O) optical fibers coupled with the package substrate core or coupled... Agent: Cool Patent, P.C. C/o Cpa Global

20090238231 - Ld module: The present invention is to provide an LD module that can detect a wavelength fluctuation with a simple configuration and can reduce its size and prices. The LD module includes a double-sided light-emitting LD element for emitting an output light and a backward light in both forward and backward directions,... Agent: Nec Corporation Of America

20090238232 - Method of protecting semiconductor chips from mechanical and esd damage during handling: A method and apparatus are provided for protecting a semiconductor device from damage. The method may include the steps of providing an active semiconductor device on a surface of a semiconductor substrate where the active device is surrounded by an inactive semiconductor area, and providing a soft metallic guard element... Agent: Emcore Corporation

20090232166 - Electro-optic deflector: An electro-optic deflector 51 has an electro-optic material body 519 through which an optical beam 46 is passed. The deflector has no more than three longitudinal electrodes, of which no more than two electrodes 511, 512 have arcuate transverse cross-sections. The electrodes are arranged to create an electric field substantially... Agent: NeifeldIPLaw, PC

20090232167 - Acousto-optically q-switched co2 laser: A pulsed CO2 laser is Q-switched by an intracavity acousto-optic (AO) Q-switch including an AO material transparent at a fundamental wavelength of the laser. In one example the AO material is germanium.... Agent: Coherent, Inc. C/o Morrison & Forester

20090232168 - Green laser system: A green laser is made by constructing a laser cavity that includes within it a laser diode, a non-linear crystal such as KTP, and a lens. The boundaries of the cavity are not defined by the ends of the diode itself, but are instead defined by the ends of an... Agent: Gibson & Dernier L.L.P.

20090232170 - Semiconductor laser module: A semiconductor laser module is disclosed, comprising a module carrier (20) having a mounting area (21), a pump device (1) arranged on the mounting area (21), a surface emitting semiconductor laser (40) arranged on the mounting area (21), and a frequency conversion device (6) arranged on the mounting area (21),... Agent: Cohen, Pontani, Lieberman & Pavane LLP

20090232169 - Wavelength converting laser device: A wavelength converting laser device includes a laser diode producing laser light and including an optical resonator having a pair of facing reflectors, including a reflecting surface having a shape reducing loss in the optical resonator, with regard to a specific horizontal transverse mode of laser light as compared to... Agent: Leydig Voit & Mayer, Ltd

20090232171 - Laser system: The higher efficiency and lower power consumption are realized in a laser system for generating a high-power short-pulse laser beam. The laser system includes a laser oscillator for generating a pulse laser beam by laser oscillation, plural amplifiers for sequentially inputting the pulse laser beam generated by the laser oscillator... Agent: Wenderoth Lind & Ponack, L. L. P.

20090232172 - Laser frequency stabilizing device, method and program: A laser frequency stabilizing device comprises a laser light producer operative to produce and emit a laser light containing a first and a second longitudinal mode light having different wavelengths; a spectrometer operative to spectrally decompose the laser light into the first longitudinal mode light and the second longitudinal mode... Agent: Greenblum & Bernstein, P.L.C

20090232173 - Optical semiconductor apparatus: An optical semiconductor apparatus includes: an optical semiconductor element that outputs light; a lens that transmits light output from the optical semiconductor element; and a support member that is integrally formed and includes a first support supporting the optical semiconductor element, a second support supporting the lens, and an intermediate... Agent: Staas & Halsey LLP

20090232175 - Drive circuit for semiconductor light emitting element, and light source device, lighting device, monitor device, and image display device using the drive circuit: A drive circuit for a semiconductor light emitting element used for a light source device adapted to output a laser beam converted using a wavelength conversion element adapted to generate a second harmonic wave, includes a switching element connected to a power supply, an inductor having one end connected to... Agent: Oliff & Berridge, PLC

20090232174 - Semiconductor laser driving device and semiconductor laser driving method: A semiconductor laser driving device is mounted on an information recording/reproducing device or the like, and is suitably used for recording and reproducing information. The semiconductor laser driving device is provided with a semiconductor laser for emitting laser beams, and a temperature detecting means for detecting a temperature of the... Agent: Young & Thompson

20090232176 - Single mode vertical cavity surface emitting laser using photonic crystals with a central defect: Vertical cavity surface emitting lasers are disclosed, one example of which includes a substrate upon which a lower mirror layer is formed. An active region and upper mirror layer are disposed, in that order, on the lower mirror layer. In particular, the upper mirror layer includes a plurality of DBR... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090232177 - Method for producing a semiconductor laser, and semiconductor laser: A method for producing a multiplicity of semiconductor lasers (100) comprising the steps of providing a carrier wafer (30), producing an assembly (70) by applying a multiplicity of semiconductor laser chips (4) to a top side (31) of the carrier wafer (30), and singulating the assembly (70) to form a... Agent: Cohen, Pontani, Lieberman & Pavane LLP

20090232178 - Two-wavelength semiconductor laser device: A semiconductor laser device has a first light emitting portion and a second light emitting portion having a longer emission wavelength than that of the first light emitting portion. Each of the first light emitting portion and the second light emitting portion has a stripe-shaped ridge structure used for carrier... Agent: Mcdermott Will & Emery LLP

20090232179 - Surface emitting laser: A surface emitting laser having a photonic crystal layer 130 on a substrate 105 with an active layer therebetween, in which the photonic crystal layer includes at least a first periodic structure for resonating in an in-plane direction and a second periodic structure for modulating a light intensity distribution in... Agent: Fitzpatrick Cella Harper & Scinto

20090232180 - Method and apparatus for coherently combining laser emission: A laser system comprises first and second laser sub-cavities each including a gain medium arranged to produce volume gain gratings. The laser system further includes a beam combiner arranged to combine emission from each cavity and direct emission from one cavity to the other. As a result a stale, phase-locked... Agent: Brooks Kushman P.C.

20090225794 - High energy all fiber mode locked fiber laser: Methods and systems for generating high energy, ultra-short laser pulses are disclosed, including generating electromagnetic radiation from a pump laser; coupling the pump laser electromagnetic radiation to a Ytterbium doped fiber using a WDM coupler; coupling the output from the Ytterbium doped fiber to a first single mode fiber; coupling... Agent: John Martin Taboada

20090225793 - Method and apparatus for generating high power visible and near-visible laser light: A multimode-fiber Raman laser includes a pump source configured to provide optical radiation centered at a pump wavelength and characterized by a spectral bandwidth greater than 100 MHz and an oscillator resonant at an emission wavelength greater than the pump wavelength. The oscillator includes an input coupler optically aligned with... Agent: Townsend And Townsend And Crew, LLP

20090225795 - Optical frequency synthesizer and optical frequency synthesizing method using femtosecond laser optical injection locking: The present invention relates to an optical frequency synthesizer and an optical frequency synthesizing method using femtosecond laser optical injection locking, which inject a femtosecond laser optical frequency comb into a diode laser, thus obtaining single-mode laser light, phase-locked to only a single mode in the optical frequency comb, and... Agent: Hyun Jong Park Park & Associates Intellectual Property Law LLC

20090225796 - Diffraction grating device, laser diode, and wavelength tunable filter: A diffraction grating device includes a substrate with a primary surface having a plurality of grating areas that are periodically arranged with a constant period in a predetermined axis direction, the grating area including a first area and a second area, a diffraction grating structure providing a chirped grating whose... Agent: Smith, Gambrell & Russell

20090225798 - Optical apparatus and method: An optical apparatus comprising a gain medium exhibiting polarisation dependent absorption along two axes, the gain medium having a weakly absorbing axis and a strongly absorbing axis, an optical pump source arranged to direct pump light towards a first face of the gain medium such that the pump light entering... Agent: Smyrski Law Group, A Professional Corporation

20090225797 - Semiconductor laser component , optical device for a semiconductor laser component, and method for producing an optical device: A semiconductor laser component comprising a semiconductor laser chip (1) provided for generating radiation and an optical device comprising a carrier (7), a radiation deflecting element (8) arranged on the carrier and a mirror arranged on the carrier is proposed, wherein the mirror is formed as an external mirror (9)... Agent: Cohen, Pontani, Lieberman & Pavane LLP

20090225799 - Optoelectronic oscillator and pulse generator: The objects of the present invention are to shorten a cavity length of an optoelectronic oscillator and to integrate on a semiconductor or SiO2-substrate. An optoelectronic oscillator 10 have an optoelectronic loop comprising a semiconductor laser 11, an optical waveguide 12 guiding laser light emitted from the semiconductor laser, a... Agent: Turocy & Watson, LLP

20090225801 - Semiconductor optical element and external cavity laser having the semiconductor optical element: The present invention provides a semiconductor optical element applicable to an EC-LD or an SLD, and an external cavity laser having the semiconductor optical element. The semiconductor optical element has a pair of cleavage surfaces, and comprises a semiconductor substrate 11 having a base surface and a planer structure provided... Agent: Greer, Burns & Crain

20090225800 - Very low-noise semiconductor laser: The subject of the invention is a laser comprising a semiconductor active medium with a population inversion lifetime τc and a resonant cavity with a lifetime of the photons in the cavity τp. The cavity includes means for being longitudinally monomode and means so that τp>τc, such as for example... Agent: Lowe Hauptman & Berner, LLP

20090225802 - Extended tuning in external cavity quantum cascade lasers: In a semiconductor lasers using quantum well gain medium, a quantum well stack is mounted in an epi-down configuration. The epitaxial side of the device may be directly bonded to an efficient heat transport system so that heat may more easily leave the quantum well stack layers and be disposed... Agent: Roeder & Broder LLP

20090225803 - Apparatus and method for measurement of dynamic laser signals: A system contains a laser output measurement circuit used in a laser control system (210). The circuits contain a photodiode (109), sample and hold amplifier (202), IC with synchronizer and delay circuits (206), and an analog to digital converter (204). The circuits measure the laser light output (107) while the... Agent: Schwabe, Williamson & Wyatt, P.C. Pacwest Center, Suite 1900

20090225804 - Semiconductor laser and method for manufacturing the same: A semiconductor laser comprises an active section for generating light, and a peripheral section as resonator for producing laser light from the generated light, and includes an InP substrate. The active section has a lower cladding layer formed of AlInAs or AlGaInAs, a core layer including an active layer formed... Agent: Leydig Voit & Mayer, Ltd

20090225805 - Photonic crystal and surface emitting laser using such photonic crystal: A photonic crystal that can spatially control the resonance efficiency and reduce the leakage of light in transversal directions and a surface emitting laser that can be formed by using such a photonic crystal are provided. The photonic crystal has a first region and a second region having a same... Agent: Fitzpatrick Cella Harper & Scinto

20090219954 - Conversion device with multi-faceted output face and laser projection system incorporating the same: The present invention relates generally to multi-faceted wavelength conversion devices and laser projection systems incorporating the same.... Agent: Corning Incorporated

20090219955 - Laser oscillation method, laser, laser processing method and laser measurement method: The present invention relates to a laser oscillation method for effectively suppressing fluctuations in pulse widths. The laser oscillation method oscillates a pulsed beam in a laser that comprises pumping means, a resonator, Q-switching means and a controller. The pumping means continuously supplies pumping light to a gain medium, which... Agent: Venable LLP

20090219956 - Device for generating narrowband optical radiation: Optical parametric generation is disclosed, wherein a bulk Bragg grating is used as an element for providing narrow wavelength bandwidth. Various embodiments for obtaining improved performance and narrow bandwidth operation are disclosed.... Agent: Alston & Bird LLP

20090219957 - Radio-frequency-modulated surface-emitting semiconductor laser: In a surface emitting semiconductor laser comprising a semiconductor chip (1), a first resonator mirror (4) and at least one further resonator mirror (8) which is arranged outside the semiconductor chip (1) and forms with the first resonator mirror (4) a laser resonator having a resonator length L and a... Agent: Cohen, Pontani, Lieberman & Pavane LLP

20090219958 - Wavelength converting laser and image display: A wavelength converting laser includes: a fundamental-wave laser light source emitting a fundamental wave; and a wavelength conversion element converting the fundamental wave emitted from the fundamental-wave laser light source into a converted wave having a different wavelength from the fundamental wave, in which: a pair of fundamental-wave reflecting surfaces... Agent: Wenderoth, Lind & Ponack L.L.P.

20090219959 - Method and system for tunable pulsed laser source: A tunable pulsed laser includes a seed source and an optical circulator. The optical circulator includes at least a first port coupled to the seed source, a second port, and a third port. The laser also includes an amplitude modulator characterized by a first optical side and a second optical... Agent: Townsend And Townsend And Crew, LLP

20090219960 - Phase and polarization controlled beam combining devices and methods: A controller, such as a programmable logic controller, may manipulate a phase and/or polarization module to alter and/or control the phase and polarization of input beams. Utilizing active phase and polarization control can enable the combination of any arbitrary number of input beams into a single, combined beam. Utilizing active... Agent: Mcdermott Will & Emery LLP

20090219961 - Laser systems and methods having auto-ranging and control capability: Laser systems and methods having an ability to automatically adjust a laser output based on one or more of a state of an object detected within a field of view and a motion of the laser system are disclosed.... Agent: Constellation Law Group, PLLC

20090219962 - Control modules for laser systems having auto-ranging and control capability: Control modules for automatically adjusting a laser output based on a range to an object detected within a field of view are disclosed.... Agent: Constellation Law Group, PLLC

20090219963 - Optical module: An optical module includes a laser device, a thermal conduction member, a Peltier device disposed between the laser device and the thermal conduction member, a heat radiation part, and a variable thermal-resistance device disposed between the thermal conduction member and the heat radiation part, the variable thermal-resistance device changing a... Agent: Staas & Halsey LLP

20090219964 - laser diode driver: An apparatus for driving a laser diode (10) by utilizing power means to activate the laser diode in short time includes a first voltage source (13) used during transient period of the laser diode operation. A second voltage source (12) equipped with lower voltage than the first voltage source (13)... Agent: David A. Novais Patent Legal Staff

20090219965 - Power-saving laser pointer mouse: The present invention provides a power-saving laser pointer mouse including a battery, a micro-controller and a laser diode. The power-saving laser pointer mouse can be operated in multi-stage power-saving modes according to the voltage value of the battery. The lighting time interval of the laser diode is adjusted by the... Agent: Kirton And Mcconkie

20090219966 - Laser diode with improved heat dissipation: A laser diode structure that includes two different insulator layers, one to maintain good optical confinement, typically located at the sides of the laser ridge, and another to improve the heat dissipation properties, typically located on the etched surfaces away from the ridge.... Agent: Mark D. Saralino ( Sharp ) Renner, Otto, Boisselle & Sklar, LLP

20090219967 - Semiconductor optical device: To provide a semiconductor optical device which can restrain laser characteristics from being deteriorated by excitation in a substrate mode and can reduce the number of manufacturing steps. A semiconductor optical device comprises a first DBR layer, provided on a semiconductor substrate, having first and second semiconductor layers stacked alternately,... Agent: Smith, Gambrell & Russell