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| Number | Title | Issue Date |
| 8121156 | Solid-state laser device and image display device A semiconductor laser light source emits a laser beam for pumping. An optical resonator includes a solid laser crystal to be excited by the incident of a laser beam to oscillate a fundamental wave and a pair of fundamental wave reflective coats arranged at the oppos... | 02/21/2012 |
| 8121157 | Terahertz beam scanning apparatus and method thereof To provide a terahertz beam scanning apparatus and method that can scan a terahertz beam at high speed over a wide angle. The terahertz beam scanning apparatus includes: a laser device 12 that generates a first laser beam 1 and a second laser beam 2... | 02/21/2012 |
| 8116340 | Quadratic nonlinearity-based high-energy pulse compressor for generating few-cycle pulses A pulse compressor for compressing many-cycle femtosecond-duration high-energy pulses to near-single-cycle durations uses a single quadratic nonlinear crystal. A pulsed laser beam is controlled and its passage is aligned through the quadratic nonlinear crystal such ... | 02/14/2012 |
| 8094690 | Wavelength converting element and wavelength converting laser apparatus A wavelength converting element that is of a planar waveguide type, includes a plate-like nonlinear optical material, and performs a wavelength conversion on a fundamental wave of a laser beam by propagating the fundamental wave in a plurality of laser oscillation m... | 01/10/2012 |
| 8085823 | Laser source device, wavelength conversion element, method of manufacturing wavelength conversion element, projector, and monitoring device A laser source device includes: a light emission unit which emits laser beam having first wavelength; a first mirror which selectively reflects S-polarized light contained in the first wavelength laser beam emitted from the light emission unit in a direction differe... | 12/27/2011 |
| 8073022 | Laser light source device and image display device A laser light source device, which is capable of multi-wavelength oscillation, includes a laser light source; and a laser cavity including (i) a fiber, (ii) a first fiber grating provided at a side of the fiber toward the laser light source and having a plurality of... | 12/06/2011 |
| 8073023 | Surface emitting laser A surface emitting laser includes a plurality of semiconductor layers including an active layer over a substrate, and emits laser light in a direction perpendicular to the surface of the substrate. The semiconductor layers including the active layer define a resonat... | 12/06/2011 |
| 8050300 | Laser beam source device, lighting device, image display apparatus, and monitoring apparatus A laser beam source device includes: a light source which emits light having fundamental wavelength; a wavelength conversion element which converts the light having fundamental wavelength into light having conversion wavelength; a resonance element which transmits f... | 11/01/2011 |
| 8040929 | Optical parametric amplification, optical parametric generation, and optical pumping in optical fibers systems Embodiments described herein include a system for producing ultrashort tunable pulses based on ultra broadband OPA or OPG in nonlinear materials. The system parameters such as the nonlinear material, pump wavelengths, quasi-phase matching periods, and temperatures c... | 10/18/2011 |
| 8000357 | Compact, efficient and robust ultraviolet solid-state laser sources based on nonlinear frequency conversion in periodically poled materials A compact and efficient ultraviolet laser source based on a optically-pumped solid-state or fiber laser that produces near-infrared output light suitable for nonlinear frequency conversion. The infrared laser output is frequency tripled or quadrupled to produce ligh... | 08/16/2011 |
| 7995628 | Recycling pump-beam method and system for a high-power terahertz parametric source A method and a system are implemented in the fabrication of a portable high power terahertz beam source that can produce a tunable, high power terahertz beam over the frequency from 0.1 THz to 2.5 THz. The terahertz source employs a recycling pump beam method and a ... | 08/09/2011 |
| 7983315 | Frequency changing device The invention relates to a frequency changing device comprising a laser having a waveguide and a nonlinear optical medium which changes the frequency of the light generated by the laser. It is provided that the waveguide of the laser at least adjacent to the exit fa... | 07/19/2011 |
| 7978738 | OPO laser mid-IR wavelength converter A wavelength converter comprising an arsenic sulfide (As—S) chalcogenide glass fiber coupled to an optical parametric oscillator (OPO) crystal and a laser system using an OPO crystal coupled to an As—S fiber are provided. The OPO receives pump laser radiation fr... | 07/12/2011 |
| 7974320 | Method for having laser light source in standby status When the laser light source is caused to standby, the temperatures of semiconductor laser 1 and semiconductor laser 9 are changed by approximately 3° C. from the temperature when the laser light source is always being used. With a temperature change o... | 07/05/2011 |
| 7957434 | Light emitting device and fabrication method thereof Disclosed herein is a light emitting device with improved life characteristics. The light emitting device comprises a circuit board having a recess, a reflection plane and an excitation source disposed in the recess, an overmolding overlying the reflection plane and... | 06/07/2011 |
| 7953128 | Pump recycling scheme for terahertz generation Structures and techniques are disclosed that enable efficient generation of terahertz (THz) radiation capable of surpassing the fundamental quantum limit, as defined by the Manley-Rowe relations. In one particular embodiment, a difference frequency mixing (DFM) crys... | 05/31/2011 |
| 7929583 | System and method for optical frequency conversion A system and method for optical frequency conversion having asymmetric output include a coherent light apparatus. The coherent light apparatus includes a coherent light source that produces a first coherent light, a frequency converter optically coupled to the coher... | 04/19/2011 |
| 7916764 | Output power control for harmonic-generating laser In harmonic-generating laser apparatus, plane-polarized fundamental radiation of a laser is converted to harmonic radiation by an optically nonlinear crystal. The power of harmonic radiation generated by the apparatus is selectively varied by selectively rotating th... | 03/29/2011 |
| 7907646 | Laser light source and display device According to the present invention, a laser light source comprises plural semiconductor lasers (2), a solid laser (4), a non-linear material (3) as a wavelength conversion element, a reflection coat (5) formed on one facet of the solid la... | 03/15/2011 |
| 7899093 | Combination of up-converting materials with semiconductor light sources Methods, apparatus and systems for an up-converter resonant cavity light emitting diode device includes a semiconductor light source, an up-converter to form the light emitter with up-converting materials and an electrical source coupled with the semiconductor light... | 03/01/2011 |
| 7889769 | Multi-spectral laser source employing periodically poled crystal mixer A multi-spectral laser system produces first and second output frequencies by nonlinear mixing of a first, second, and third laser light frequency in a single periodically polled crystal, where the first and second output frequencies are separated by a range greater... | 02/15/2011 |
| 7852886 | 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 provi... | 12/14/2010 |
| 7852885 | Light source device and image display apparatus There are provided a light source device and an image display apparatus. The light source device includes a first optical element that deflects a propagation direction of laser beams, a second optical element that separates laser beams, and a third optical element t... | 12/14/2010 |
| 7792163 | Harmonic generator and an image display device using the harmonic generator It is aimed to suppress a local increase of an energy density per unit time in a nonlinear crystal. A fundamental wave emitted from a fundamental wave laser light source is condensed by a condenser lens and incident on a nonlinear crystal 11 having a poled st... | 09/07/2010 |
| 7792162 | Selectable multiwavelength laser for outputting visible light The invention provides a laser system (100) wherein the output may be selected from two or more different wavelengths of output laser light. The system (100) comprises a laser capable of having at least two different wavelengths of laser light resonati... | 09/07/2010 |
| 7778291 | 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 h... | 08/17/2010 |
| 7778290 | Fiber lasers Fiber lasers for producing Band I wavelengths include a laser cavity having an optical fiber with specific parameters in length and thickness and doping concentration, and having high reflectivities. Examples show the feasibility of producing such fiber lasers. Fibe... | 08/17/2010 |
| 7769060 | Laser light source, and display device using the same A laser light source having a semiconductor laser (102) for outputting pump light, and a laser resonator wherein a solid laser crystal (104) and a non-linear optical crystal (103) are connected by optical contact and a reflection coat (106 | 08/03/2010 |
| 7760773 | Wavelength conversion laser apparatus A wavelength conversion laser apparatus including: a laser light source emitting primary wavelength light; a non-linear optical crystal including: a light waveguide region having a first refractivity, the light waveguide region receiving the primary wavelength light... | 07/20/2010 |
| 7742510 | Compact solid-state laser with nonlinear frequency conversion using periodically poled materials A compact optically-pumped solid-state laser designed for efficient nonlinear intracavity frequency conversion into desired wavelengths using periodically poled nonlinear crystals. These crystals contain dopants such as MgO or ZnO and/or have a specified degree of s... | 06/22/2010 |
| 7738515 | Quasi-CW UV laser with low peak pulse-power Laser apparatus is disclosed in which fundamental-wavelength optical pulses delivered from a mode-locked laser resonator at a pulse-repetition frequency (PRF) are converted to harmonic-wavelength pulses in an optical delay loop. One example is disclosed in which the... | 06/15/2010 |
| 7733926 | Thulium laser pumped Mid-IR source with broadbanded output A Thulium laser (15) is used to directly drive a ZnGeP2 optical parametric oscillator (30) with a nominal 2 μm output to generate the 3-5 micron wavelengths. In one embodiment, the ZGP OPO is configured as a linear resonator and in another ... | 06/08/2010 |
| 7733927 | Laser light source device and image display device The present invention concerns a laser light source device capable of multiwavelength oscillation. This laser light source device is provided with a laser light source; a laser cavity including a fiber, a first fiber grating provided at a side of the fiber toward th... | 06/08/2010 |
| 7729395 | 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 wavelengt... | 06/01/2010 |
| 7729394 | Conversion efficiency expansion in wavelength converting optical packages Particular embodiments of the present invention relate generally to altering the effective conversion efficiency curve of an optical package employing a semiconductor laser and an SHG crystal or other type of wavelength conversion device. For example, according to o... | 06/01/2010 |
| 7724788 | Wavelength-agile laser transmitter using optical parametric oscillator A wavelength-agile laser transmitter apparatus and method are provided. The apparatus comprises a pump laser that is configured to output a pump beam at a first (pump) wavelength and an optical parametric oscillator. The optical parametric oscillator comprises a cav... | 05/25/2010 |
| 7715451 | Housing for harmonic generation crystals in solid state laser systems Apparatus for effecting harmonic conversion of a laser beam of predetermined frequency, to provide plural harmonic components of the laser beam at frequencies different from the predetermined frequency, includes a housing (40) defining a hermetically sealed c... | 05/11/2010 |
| 7711017 | 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 in... | 05/04/2010 |
| 7701986 | Laser light source apparatus and image generating apparatus using such laser light source apparatus Disclosed is a laser light source apparatus. The laser light source apparatus includes a pumping light source and a pair of resonator mirrors. In the laser light source apparatus, the pumping light source includes at least a laser medium and a wavelength conversion ... | 04/20/2010 |
| 7649918 | Multi-component wavelength conversion devices and lasers incorporating the same According to one embodiment of the present invention, a frequency-converted laser source is provided wherein the wavelength conversion device comprises a plurality of waveguide components comprising respective input faces positioned in an effective focal field of th... | 01/19/2010 |
