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| Number | Title | Issue Date |
| 7639717 | Laser source device and projector equipped with the laser source device A laser source device includes a laser source for oscillating a laser beam with a predetermined wavelength, a mirror for reflecting the laser beam emitted from the laser source to form a resonator, and including a dielectric multilayer film having a property of refl... | 12/29/2009 |
| 7639718 | Output coupler for external cavity laser The disclosed invention is an external cavity laser with a volume holographic VHG output coupler. The facet of the VHG is coated with a very high reflectivity coating (HR close to 100%) for the purpose of reflecting the second harmonic (SH) light generated intra-cav... | 12/29/2009 |
| 7633978 | Frequency stabilized laser source A laser arrangement is provided, in which a Lyot filter arrangement is operative to effect single mode operation. The birefringent element of the Lyot filter arrangement has a cavity folding mirror on one side thereof and a polarizing element on another side thereof... | 12/15/2009 |
| 7633979 | Method and apparatus for producing UV laser from all-solid-state system An all-solid-state laser system produces coherent DUV radiation through a third or fourth harmonic generation. The fundamental wavelength is generated by a slave laser optically pumped by one or more light source(s) of high density array(s) and is stabilized by inje... | 12/15/2009 |
| 7630418 | Laser system for generation of high-power sub-nanosecond pulses with controllable wavelength in 2-15 μm region A laser system capable of efficient production of high energy sub-nanosecond pulses in the 2-15 μm spectral region is disclosed. Diode pumped solid state lasers are used as pump sources. The system design is simple, reliable and compact allowing for easy integratio... | 12/08/2009 |
| 7630419 | 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... | 12/08/2009 |
| 7627007 | Non-critical phase matching in CLBO to generate sub-213nm wavelengths A laser illuminator and illumination method for use in an inspection system, such as a semiconductor wafer inspection system or photomask inspection system is provided. The design comprises generating fundamental frequency laser energy at different fundamental wavel... | 12/01/2009 |
| 7623556 | Device for multiplying optical frequencies An optical cavity is combined with non-linear optical crystals and a laser source to generate light radiation at a frequency about 1.5 times the frequency of the initial laser source while having a wavelength 2/3 that of the initial laser source. The optical cavity ... | 11/24/2009 |
| 7620079 | Wavelength converter apparatus A compact apparatus is provided for stably converting a wavelength of a laser diode with the use of an optical fiber and a wavelength selective device. Employing a bulk type element as a wavelength selective device makes the action of controlling the temperature of ... | 11/17/2009 |
| 7602824 | Device and method for supplying short-wavelength light The present invention broadly comprises a device for supplying light at an illumination wavelength shorter than 300 nm. The device includes a first subassembly, having a light source for delivering light at a wavelength that is at least twice as long as the illumina... | 10/13/2009 |
| 7599409 | Electromagnetic wave generating device An electromagnetic wave generator encompasses a first pump beam emitter (2) configured to emit a first pump beam (hv1) having a wavelength larger than one micrometer; a second pump beam emitter (25) configured to emit a wavelength-tunable se... | 10/06/2009 |
| 7593438 | Driving method for laser light source device, laser light source device, image display device, monitor device, and illumination device A driving method for laser light source device includes: providing a laser light source device including a laser light source, a wavelength conversion element converting the wavelength of the light emitted from the laser light source, and a resonator mirror constitu... | 09/22/2009 |
| 7593437 | MOPA laser apparatus with two master oscillators for generating ultraviolet radiation Laser apparatus including two different, pulsed MOPAs, one having a fundamental wavelength of 1064 nm and the other having a fundamental wavelength of 1547 nm, provide trains of optical pulses. The 1064-nm pulses are frequency-quadrupled to a wavelength of 266 nm. T... | 09/22/2009 |
| 7573920 | Vertical external cavity surface emitting laser Provided is a Vertical External Cavity Surface Emitting Laser (VECSEL). The VECSEL includes a semiconductor chip, a pump laser, a narrow bandwidth polarization filter, an external mirror, and a Second Harmonic Generation (SHG) element. The semiconductor chip include... | 08/11/2009 |
| 7570676 | 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... | 08/04/2009 |
| 7570677 | Optical device, laser beam source, laser apparatus and method of producing optical device After forming domain inverted layers 3 in an LiTaO3 substrate 1, an optical waveguide is formed. By performing low-temperature annealing for the optical wavelength conversion element thus formed, a stable proton exchange layer 8 is fo... | 08/04/2009 |
| 7551653 | Multiple wavelength laser arrangement A laser arrangement comprising a first and a second resonant cavity for generating a first and a second fundamental wavelength. A first and a second non-linear region are provided in the second cavity for sum-frequency mixing of the radiation generated in the first ... | 06/23/2009 |
| 7542490 | Reduction of surface heating effects in nonlinear crystals for high power frequency conversion of laser light A device for generating a frequency converted laser beam includes a nonlinear crystal having a first end face and a second end face opposed to the first end face. The nonlinear crystal is configured to receive at least one input laser beam at the first end face and ... | 06/02/2009 |
| 7539222 | Method of operating laser light source A method of operating a laser light source including a wavelength conversion device in which two wavelength laser beams are input to a nonlinear crystal to output a sum frequency wavelength, according to one embodiment includes inputting only one wavelength laser be... | 05/26/2009 |
| 7535937 | Monolithic microchip laser with intracavity beam combining and sum frequency or difference frequency mixing A method for producing low-noise laser output at various wavelengths and/or in various operation modes in a monolithic microchip laser comprises schemes of generating two fundamental beams in separate cavities, precise intracavity beam combination based on the walk-... | 05/19/2009 |
| 7535938 | Low-noise monolithic microchip lasers capable of producing wavelengths ranging from IR to UV based on efficient and cost-effective frequency conversion A method for producing low-noise laser output at wavelengths ranging from IR through visible to UV in various operation modes from a monolithic microchip laser comprises schemes of (1) generating one or two fundamental beam(s) from light source(s) selected upon the ... | 05/19/2009 |
| 7515617 | Photonic device having higher order harmonic emissions A photonic device is disclosed which has higher order harmonic emissions. A pump source is adapted to emit a laser beam at a source frequency and to have a power output of less than approximately 100 Watts. A micro-cavity resonator, which is adapted to exhibit inver... | 04/07/2009 |
| 7512160 | Control method of distributed Bragg reflection semiconductor laser, and image projecting apparatus A DBR semiconductor laser is controlled in an image projecting apparatus, which includes the DBR laser having a phase and DBR region, a light wavelength converting device for converting fundamental-wave light emitted from the DBR laser into second harmonic wave ligh... | 03/31/2009 |
| 7480317 | Thermal compensation in semiconductor lasers The present invention relates to relates generally to semiconductor lasers and, more particularly, to schemes for measuring and controlling the temperature of semiconductor lasers and schemes for wavelength stabilization of semiconductor lasers. According to one emb... | 01/20/2009 |
| 7471705 | Ultraviolet laser system and method having wavelength in the 200-nm range An apparatus and method applicable for generating ultraviolet laser light having a wavelength in the 200-nm range and/or 250-nm range; in some embodiments, using a single fiber laser pump source (in some embodiments, a pulsed source). In some embodiments, the invent... | 12/30/2008 |
| 7471706 | High resolution, full color, high brightness fully integrated light emitting devices and displays A light emitting device includes a substrate, at least one semiconductor light emitting device formed in or on the substrate, and upconverting material disposed in or on the substrate. The upconverting material is disposed in a path of light processed or emitted by ... | 12/30/2008 |
| 7466728 | Method for laterally-coupling frequency-converted laser radiation out of a resonator In traveling-wave ring-resonator an optically nonlinear crystal for converting visible radiation to ultraviolet (UV) radiation has an input face and two output faces. The visible light propagates through the crystal from the input face to one of the output faces. Th... | 12/16/2008 |
| 7463657 | Intracavity frequency-tripled CW laser A method of intracavity frequency conversion in a CW laser includes causing fundamental radiation to circulate in a laser resonator. The fundamental radiation makes a first pass through an optically nonlinear crystal where a fraction of the fundamental radiation gen... | 12/09/2008 |
| 7463658 | Laser and method for generating pulsed laser radiation A laser for generating pulsed laser radiation. An element is arranged in the resonator to generate laser radiation having the first wavelength by frequency conversion of the primary radiation. The resonator is switchable into a first state in which it is open to the... | 12/09/2008 |
| 7447244 | Wavelength conversion laser device A wavelength conversion laser device includes a laser light source for emitting a first wavelength light, a nonlinear optical crystal for converting the first wavelength light into a second wavelength light, and a nonlinear optical crystal rotator for rotating the n... | 11/04/2008 |
| 7447243 | Laser emitting module, window cap, laser pointer, and light emitting module A laser emitting module, a window cap thereof, a laser pointer using the same and a light emitting module are provided. A light emitted from a laser diode excites a solid-state laser medium so as to generate lights of different wavelengths, the wavelength of which i... | 11/04/2008 |
| 7443892 | Wavelength conversion laser apparatus In a wavelength conversion laser device, a laser light source emits first wavelength light. A non-linear optical crystal converts the first wavelength light into second wavelength light. A rotational driver rotates the non-linear optical crystal so as to alter an in... | 10/28/2008 |
| 7440477 | Solid-state laser generator Two laser media are disposed at equal intervals between a first flat mirror, which is a resonator mirror comprising a resonator, and a second flat mirror for separating laser light that transmits second-harmonic laser light and reflects fundamental laser light towar... | 10/21/2008 |
| 7433115 | Light emitting device A light emitting device comprises a first unit and a second unit, the first unit comprising: a first excitation light source comprising a laser element emitting blue wavelength band excitation light; a first wavelength converting member comprising at least one type ... | 10/07/2008 |
| 7433373 | Actively Q-switched laser system using quasi-phase-matched electro-optic Q-switch A Q-switched laser system is disclosed. The laser system employs a quasi-phase-matched electro-optic (QPM EO) crystal as the laser Q-switch. When applied with a certain modulating electric field, the QPM EO crystal can function as a polarization rotator to rotate th... | 10/07/2008 |
| 7433374 | Frequency-doubled edge-emitting semiconductor lasers A frequency-doubled, edge-emitting semiconductor laser includes a separate confinement heterostructure surmounted by a waveguide including a converting layer of a periodically poled, optically nonlinear material. Fundamental radiation generated in the heterostructur... | 10/07/2008 |
| 7430226 | Dispersion managed fiber stretcher for high-energy short pulse femotosecond fiber laser system A fiber Chirped Pulse Amplification (CPA) laser system that includes a fiber mode-locking oscillator for generating a seed laser for projecting to a stretcher for generated a pulse-stretched laser for projecting to a multiple stage amplifier. The multiple stage ampl... | 09/30/2008 |
| 7430231 | Vertical cavity surface emitting laser (VCSEL) arrays pumped solid-state lasers Solid-state lasers pumped by incoherent or partially coherent, monochromatic light sources such as high power VCSEL arrays. Efficient and uniform injection of pumping energy into gain medium is achieved through spectral match of the pump source with the gain medium ... | 09/30/2008 |
| 7428252 | Unstable monoblock laser cavity with integrated beam expander A monoblock laser cavity includes a plurality of discrete optical components disposed serially on a substrate and sharing a common optical axis. The optical components include a laser rod of gain material, a Q-switch, an OPO crystal, an output coupler, and a positiv... | 09/23/2008 |
| 7426223 | Coherent light source and optical device It is easy to increase output with a wide stripe laser, but the lateral mode is a multimode, and the coupling efficiency is low with a single-mode fiber or a single-mode waveguide, creating problems in terms of increasing output. To solve these problems, the light e... | 09/16/2008 |
