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| Number | Title | Issue Date |
| 8116342 | Variable attenuator device and method A new and useful attenuating device and method for attenuating a polarized laser beam is provided. At least one attenuating optic is located along, and is rotatable about, a polarized laser beam axis, and is configured to transmit and to reflect portions of the pola... | 02/14/2012 |
| 7995629 | Solid-state laser apparatus A high gain solid-state laser apparatus capable of generating short-pulse terahertz waves with high efficiency is provided. The apparatus includes laser gain media 1 and an optical switch 3 that entraps seed light from a laser oscillator into the appar... | 08/09/2011 |
| 7899094 | Laser light source device, illumination device, image display device, and monitor device A laser light source device includes: a light source; an external resonator; a wavelength conversion element converting the wavelength of part of incident light having the first wavelength into the second wavelength which is different from the first wavelength; and ... | 03/01/2011 |
| 7873083 | System, method, and apparatus to provide laser beams of two or more wavelengths A system, apparatus, and method may provide laser beams of two or more wavelengths from diode pumped solid-state laser sources (220, 222, 224). The beam paths of these laser beams with different wavelengths, which are generated by the laser sources (220, 2... | 01/18/2011 |
| 7835408 | Optical transmission system An optical transmission system includes a laser, a transmitter and a receiver. The laser is capable of operating on an inhomogeneously broadened optical transition of the active region of the laser. A spectral bandwidth of an output lasing spectrum of the laser is g... | 11/16/2010 |
| 7769062 | 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 ... | 08/03/2010 |
| 7697578 | Wavelength variable laser The present invention provides a directly modulatable wavelength variable laser that enables long distance and large volume communication with a simple and compact configuration. The wavelength variable laser includes a semiconductor optical amplifier, an optical fi... | 04/13/2010 |
| 7668214 | Light source An apparatus for coupling radiation of individual laser diode emitters into a common optical fiber is disclosed. The radiation is collimated along fast axis and combined by using crossed pairs of flat mirrors. The combined beams are collimated by a common slow axis ... | 02/23/2010 |
| 7561604 | Laser light source device, illumination device, image display device, and monitor device A laser light source device includes: a light source; an external resonator, a wavelength conversion element converting the wavelength of part of incident light having the first wavelength into the second wavelength which is different from the first wavelength; and ... | 07/14/2009 |
| 7558301 | Multiwavelength semiconductor laser array and method of fabricating the same A multiwavelength semiconductor laser array and a method of fabricating the same are provided. Laser resonators having stacked quantum dot active regions of different emission wavelengths are utilized together with a fabricating process to change the length of each ... | 07/07/2009 |
| 7539223 | Light emitting device A light emitting device includes a light emitting element which emits light with a first wavelength; and a light emitting conversion unit for converting the light with the first wavelength by using wavelength conversion materials including a short wavelength convers... | 05/26/2009 |
| 7483454 | Laser system architecture and method of using the same A color dazzle system to enhance area denial to personnel mission for law enforcement, homeland security, border patrol, and the military effectively by interrupting the ability of combatants to continue with their intended mission. The color dazzle system has a mul... | 01/27/2009 |
| 7400660 | Terahertz wave generation system To make a terahertz wave generation system capable of easily illuminating terahertz wave on an arbitrary position and to easily realize the system for practical use by effectively using existing systems and devices, the terahertz wave generation system has: a two-wa... | 07/15/2008 |
| 7391795 | Laser light source The invention provides a compact laser light source whose wavelength can be designed freely in a wavelength band in which the semiconductor laser has not been put to practical use by combining an efficient nonlinear optical crystal and high-power semiconductor laser... | 06/24/2008 |
| 7382810 | Widely-tunable laser apparatus A widely-tunable laser apparatus comprises a plurality of tunable lasers having different ranges that overlap to encompass a desired operating range of wavelengths (for example from 1250 nm to 1650 nm) of the widely-tunable laser apparatus. The tunable lasers are tu... | 06/03/2008 |
| 7379488 | External cavity dual wavelength laser system The number and type of quantum wells in a multi-layer gain structure of an external cavity surface emitting laser (VECSEL) are controlled to provide output light of more than one coherent wavelength. The number and type of layers in a multiplayer mirror provides a d... | 05/27/2008 |
| 7377656 | Projector A projector of rear-projection type including a light source that outputs a laser beam and a scanner that scans a screen with the laser beam. When a laser beam with energy exceeds an accessible emission limit due to failure of the light source or the scanner, at lea... | 05/27/2008 |
| 7374959 | Two-wavelength semiconductor laser device and method of manufacturing the same A two-wavelength semiconductor laser device includes a first conductive material substrate having thereon first and second regions separated from each other. A first semiconductor laser diode is formed on the first region. A non-active layer is formed on the second ... | 05/20/2008 |
| 7369597 | Laser output light pulse stretcher Providing a high peak power short pulse duration gas discharge laser output pulse comprises a pulse stretcher a laser output pulse optical delay initiating optic diverting a portion of the output laser pulse into an optical delay having an optical delay path and com... | 05/06/2008 |
| 7367969 | Ablative material removal with a preset removal rate or volume or depth The present invention includes a method of surgical material removal from a body by optical-ablation with controlled pulse energy from an amplifier including inputting an ablation-threshold-pulse-energy-for-material-being-ablated signal; controlling the energy of a ... | 05/06/2008 |
| 7365369 | Nitride semiconductor device A nitride semiconductor device used chiefly as an LD and an LED element. In order to improve the output and to decrease Vf, the device is given either a three-layer structure in which a nitride semiconductor layer doped with n-type impurities serving as an n-type co... | 04/29/2008 |
| 7359638 | Optical source generator for wavelength division multiplexing optical communication systems An optical source generator for wavelength-division-multiplexing optical communication systems includes a wavelength-division multiplexer/demultiplexer, optical amplifiers, and wavelength-dependent reflectors such as optical fiber-Bragg gratings or wavelength-indepe... | 04/15/2008 |
| 7355657 | Laser illuminated projection displays A projection video display includes a light source including an OPS-laser delivering laser radiation in multiple transverse modes (a multiple-transverse-mode OPS-laser). The display includes a spatial light modulator for spatially modulating the radiation from the m... | 04/08/2008 |
| 7352505 | Device and method for converting an optical frequency To optimise the transformation rate (efficiency) in the optical frequency conversion of laser beams of ultra-short light pulses in optically non-linear media such as a crystal (56), a double refracting crystal (54) is arranged in the beam path before t... | 04/01/2008 |
| RE40173 | High efficiency, high power direct diode laser systems and methods therefor A direct diode laser system includes N laser head assemblies (LHAs) generating N output beams, N optical fibers receiving respective N output beams and generating N received output beams, and a torch head recollimating and focusing the N received output beams onto a... | 03/25/2008 |
| 7342989 | Apparatuses and methods for mechanical shielding and cooling A transport or storage cask comprises a cask body, a modular thermal conducting and shielding system and a mechanical attachment. The modular thermal conducting and shielding system includes a modular fin and a modular neutron shield. The mechanical attachment retai... | 03/11/2008 |
| 7339968 | Current biased dual DBR grating semiconductor laser Dual-wavelength operation is easily achieved by biasing the gain section. Multiple gratings spaced apart from each other are separated from an output aperture by a gain section. A relatively low coupling coefficient, κ, in the front grating reduces the added cavity... | 03/04/2008 |
| 7339962 | Frequency locking of multisection laser diodes A multi-section laser diode control system comprising a multi-section laser diode (10), microprocessor controller (24), digital-to-analogue converter (28), driver circuit (30) and wavelength locker (14) is modified by inclusion of ... | 03/04/2008 |
| 7336684 | Planar multiwavelength optical power supply on a silicon platform A microphotonic light source includes an optical pump and a plurality of waveguides that distribute optical pump power of the optical pump. At least one Erbium-doped laser ring is coupled to at least one of the waveguides so as to match the resonance condition of th... | 02/26/2008 |
| 7327770 | Nitride semiconductor laser device To prevent deterioration induced by wire bonding in a laser device incorporating a semiconductor laser element having a nitride semiconductor laid on top of a nitride semiconductor substrate, the position at which a wire (301) is bonded to an electrode (11... | 02/05/2008 |
| 7324567 | Modulation frequency tunable optical oscillator Provided is a millimeter-wave band frequency optical oscillator that can be used as an oscillation frequency signal source for a millimeter-wave forwarded to wireless subscribers from a base station of a millimeter-wave wireless subscriber communication system for a... | 01/29/2008 |
| 7324719 | Method tuning optical components integrated in a monolithic photonic integrated circuit (PIC) A method of tuning optical components integrated on a monolithic semiconductor chip having a plurality of first optical components integrated on the chip with each fabricated to approximate an emission wavelength along a given wavelength grid and together forming a ... | 01/29/2008 |
| 7315557 | Multi-wavelength light source apparatus A pulse sequence is configured by making a pulse waveform output from a pulse light source into a super Gaussian pulse of the third order or higher, and input to a spectrum expanding device. The spectrum expanding device broadens the spectrum of the pulse sequence w... | 01/01/2008 |
| 7315039 | Confocal microspectroscope There is disclosed a confocal microspectroscope comprising an excitation light source having two or more semiconductor light sources formed on the same chip by a semiconductor process and covering a predetermined wavelength region, a semiconductor light source contr... | 01/01/2008 |
| 7310358 | Semiconductor lasers Lasers, such as in laser structures, can include two or more semiconductor structures that are substantially identical or that include the same semiconductor material and have substantially the same geometry, such as in closely spaced dual-spot two-beam or quad-spot... | 12/18/2007 |
| 7301981 | Methods for synchronized pulse shape tailoring A plurality of subresonators (12, 14), having different design configurations, share a common resonator section (18) such that the lasing action can be substantially synchronized to provide coherent laser pulses that merge the different respective puls... | 11/27/2007 |
| 7298770 | Laser spectral engineering for lithographic process An integrated circuit lithography technique called spectral engineering by Applicants, for bandwidth control of an electric discharge laser. In a preferred process, a computer model is used to model lithographic parameters to determine a desired laser spectrum neede... | 11/20/2007 |
| 7294364 | Method for curing composite materials A curing light system useful for curing light activated composite materials is disclosed. Various configurations of light emitting semiconductor chips and heat sinks are disclosed, as well as various structures and methods for driving, controlling and using them. | 11/13/2007 |
| 7292755 | Optical resonator formed in a planar optical waveguide with a distributed optical structure An optical apparatus comprises a planar optical waveguide having at least two reflectors. The planar optical waveguide substantially confines in at least one transverse spatial dimension optical signals propagating therein, and the reflectors define an optical reson... | 11/06/2007 |
| 7289549 | Lasers for synchronized pulse shape tailoring A plurality of subresonators (12, 14), having different design configurations, share a common resonator section (18) such that the lasing action can be substantially synchronized to provide coherent laser pulses that merge the different respective puls... | 10/30/2007 |
