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| Number | Title | Issue Date |
| RE43421 | Single-mode operation and frequency conversions for solid-state lasers Key technologies have been developed in realizing single longitudinal mode CW operation with a regular standing-wave cavity for intracavity frequency doubling and intracavity frequency conversions, so as to produce all solid-state, true cw devices with operation ove... | 05/29/2012 |
| 8116341 | Multiple laser wavelength and pulse width process drilling Dual-beam laser outputs, preferably derived from a single laser beam, improve the quality of the sidewalls of vias drilled in a target material, such as printed circuit board, comprising fiber-reinforced resin. Two embodiments each use two laser output components to... | 02/14/2012 |
| 8102887 | Edge bonded optical packages Particular embodiments of the present disclosure bring an SHG crystal, or other type of wavelength conversion device, into close proximity with a laser source to eliminate the need for coupling optics, reduce the number of package components, and reduce package volu... | 01/24/2012 |
| 8073024 | Wavelength conversion laser device A wavelength conversion laser device includes a solid-state laser element having a waveguide structure including a laser medium that amplifies laser beams by providing a gain generated due to absorption of pump light to the laser beams and outputs a fundamental wave... | 12/06/2011 |
| 8014429 | Wavelength conversion laser, image display device and laser processing device A wavelength conversion laser is provided with a pair of fundamental wave reflecting surfaces for reflecting a fundamental wave to define a plurality of fundamental wave paths passing a wavelength conversion element at different angles, and a control unit for contro... | 09/06/2011 |
| 7991026 | Intracavity frequency-converted optically-pumped semiconductor laser with red-light output In a branched resonator OPS-laser arrangement, a combination of intra-cavity optical parametric generation and intra-cavity sum-frequency mixing provides output radiation in a range between about 550 nanometers about 700 nanometers from an OPS fundamental wavelength... | 08/02/2011 |
| 7953129 | Laser light source device, exposure device, and mask inspection device using this laser light source device A laser light source device 1, comprising M number of laser light sources, of which frequency is shifted from a fundamental frequency by (m−1)·a·Δω, a first laser light source section 2 and a first fiber amplifier section 4 for amplifying ... | 05/31/2011 |
| 7920607 | Wavelength conversion apparatus, laser light generating apparatus and wavelength conversion method A wavelength conversion apparatus capable of keeping high wavelength conversion efficiency for a longer time than ever before is provided. A wavelength conversion apparatus includes: a wavelength conversion section including a nonlinear optical crystal, and performi... | 04/05/2011 |
| 7920606 | Frequency-tripled fiber MOPA Fundamental-wavelength pulses from a fiber a laser are divided into two portions and the two portions are separately amplified. One of the amplified fundamental-wavelength pulse-portions is frequency-doubled. The frequency doubled portion is sum-frequency mixed with... | 04/05/2011 |
| 7912102 | 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-sw... | 03/22/2011 |
| 7912101 | Controlling second harmonic efficiency of laser beam interactions A method is provided for controlling second harmonic efficiency of laser beam interactions. A laser system generates two laser beams (e.g., a laser beam with two polarizations) for incidence on a nonlinear crystal having a preferred direction of propagation. Prior t... | 03/22/2011 |
| 7907647 | Optical element, light emitting device and method for producing optical element The present invention relates to an optical element for converting light of prescribed wavelength emitted from a light source into light of wavelength different from the prescribed wavelength for outputting. A first crystal part (20) and a second crystal part... | 03/15/2011 |
| 7903701 | Intracavity harmonic generation using a recycled intermediate harmonic Lasers configured for intracavity harmonic generation of second and higher order harmonic laser beam energy include mode-matching optics, such as a curved mirror, for recycling an unused portion of an intermediate harmonic laser beam energy (e.g., second harmonic la... | 03/08/2011 |
| 7885298 | Method and apparatus for producing arbitrary pulsetrains from a harmonic fiber laser A system for producing frequency converted light includes a first seed laser operable to provide a first laser signal and a second seed laser operable to provide a second laser signal. The system also includes an optical combiner optically coupled to the first seed ... | 02/08/2011 |
| 7881349 | External-cavity optically-pumped semiconductor-laser with a resonator stop An optically pumped semiconductor-laser (OPS-laser) resonator includes an arrangement for delivering optical pump radiation on an OPS-chip to cause fundamental radiation to circulate in the resonator. The resonator includes second and third-harmonic generating cryst... | 02/01/2011 |
| 7830929 | 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... | 11/09/2010 |
| 7830928 | Quasi-phase matching and quantum control of high harmonic generation in waveguides using counterpropagating beams All-optical quasi-phase matching (QPM) uses a train of counterpropagating pulses to enhance high-order harmonic generation (HHG) in a hollow waveguide. A pump pulse enters one end of the waveguide, and causes HHG in the waveguide. The counterpropagation pulses enter... | 11/09/2010 |
| 7826502 | Circuit and method for lessening noise in a laser system having a frequency converting element A method and circuit is disclosed for a laser system wherein the power of the laser signal is kept at a constant near optimum value and a portion of an frequency doubled output signal is monitored and detected so that noise within the frequency doubled output signal... | 11/02/2010 |
| 7809030 | OPO 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... | 10/05/2010 |
| 7804865 | Single-frequency monolithic linear laser device and system comprising same A laser device includes: an amplifying medium (1, 7) adapted to generate a fundamental wavelength laser beam (13); a birefringent non-linear medium (3, 20, 20) for doubling the fundamental wavelength laser beam to generate a harmonic wavelength ... | 09/28/2010 |
| 7801188 | Continuous-wave ultraviolet laser A laser is disclosed, which is suitable for efficient generation of continuous-wave laser light having a wavelength of about 400 nm or less. The short-wavelength light is generated by first frequency-doubling a fundamental wave, and then sum-frequency mixing the fre... | 09/21/2010 |
| 7778292 | Laser processing apparatus, method for making settings for the laser processing apparatus, program for making settings for the laser processing apparatus, and computer-readable recording medium It is an object to enable control according to an optimum temperature condition for a wavelength conversion device. There are provided a laser medium for creating fundamental-wave laser light with a fundamental frequency; a wavelength conversion device which, if the... | 08/17/2010 |
| 7769061 | Laser light source device, illumination apparatus, monitor, and projector A laser light source device includes a laser light source that emits a laser beam as a fundamental wave and an optical wavelength conversion element that converts the fundamental wave into a second harmonic. An optical lens system including a first surface having po... | 08/03/2010 |
| 7760774 | Intracavity frequency conversion of laser radiation A laser device with frequency conversion, the device comprising a complex optical cavity comprising two cavity parts with two different levels of circulating intracavity power wherein there is placed at least one non-linear crystal (30) is placed within the c... | 07/20/2010 |
| 7760775 | Apparatus and method of generating laser beam A laser beam generating apparatus includes a semiconductor element and a second harmonic generating element that performs a wavelength conversion on fundamental light emitted from the semiconductor element, the laser beam generating apparatus is an external resonanc... | 07/20/2010 |
| 7715452 | 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-sw... | 05/11/2010 |
| 7697577 | Wavelength conversion apparatus and two-dimensional image display apparatus A wavelength conversion apparatus capable of stably providing high output harmonic laser light is provided. The wavelength conversion apparatus comprises an end pump fiber laser 3 containing a laser activating substance, and including a reflecting surface at ... | 04/13/2010 |
| 7693193 | Laser light source device, illumination device, monitor device, and projector A laser light source device includes: a laser light source that emits a laser light; and an optical wavelength conversion section that includes a ferroelectric material carrying therein a plurality of polarization inversion rows in which a polarization inversion are... | 04/06/2010 |
| 7653096 | Laser light source device, exposure device, and mask inspection device using this laser light source device A laser light source device 1, comprising M number of laser light sources, of which frequency is shifted from a fundamental frequency by (m−1)·a·Δω, a first laser light source section 2 and a first fiber amplifier section 4 for amplifying ... | 01/26/2010 |
| 7627008 | Laser apparatus and method for harmonic beam generation A second harmonic laser beam is generated by passing a fundamental frequency laser beam through a single second harmonic generator (SHG) crystal more than two and preferably four times, to increase the amount of power converted from the fundamental beam into the sec... | 12/01/2009 |
| 7623558 | Optical systems for laser arrays Surface emitting laser arrays with intra-cavity harmonic generation are coupled to an optical system that extracts harmonic light in both directions from an intra-cavity nonlinear optical material in such a way that the focusing properties of the light beams are mat... | 11/24/2009 |
| 7623559 | 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... | 11/24/2009 |
| 7623557 | Wavelength converting optical system, laser light source, exposure apparatus, mask examining apparatus, and macromolecular crystal lens machining device A fifth harmonic wave is formed from a fundamental wave of p-polarized light via a second harmonic wave forming optical element 3, a third harmonic wave forming optical element 4, and a fifth harmonic wave forming optical element 6 and a second ... | 11/24/2009 |
| 7616670 | Laser light source apparatus and image generating apparatus using laser light source apparatus Disclosed is a laser light source apparatus including an excitation light source, a pair of resonator mirrors, and a resonator including the excitation light source and the pair of resonator mirrors. In the laser light source apparatus, one of two higher harmonic wa... | 11/10/2009 |
| 7613215 | High efficiency second harmonic generation vertical external cavity surface emitting laser A vertical external cavity surface emitting laser (VECSEL) in which the full-width at half maximum (FWHM) of laser light is reduced by two etalon filter layers to improve the efficiency of second harmonic (SHG) crystal is provided. The VECSEL includes: a laser chip ... | 11/03/2009 |
| 7599410 | Semiconductor-diode-pumped solid state laser device A solid state laser medium is composed of Nd:YAG, the wavelength of a second harmonic wave is 557 to 559 nm and a free spectral range of a solid etalon falls in any of the values of a range A of 1.04 to 1.07 nm, a range B of 1.42 to 1.61 nm, a range C of 2.07 to 2.1... | 10/06/2009 |
| 7593440 | 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 1564 nm, provide trains of optical pulses. The 1064-nm pulses are frequency tripled to 355 nm and the 1564-nm pulse... | 09/22/2009 |
| 7593439 | Laser diode-pumped monolithic solid state laser device and method for application of said device An intracavity-doubled laser device, includes a pumping laser-diode, a Nd:YAG amplifying medium stimulated by a laser beam with a fundamental wavelength emitted by the laser diode, the output face of the amplifying medium being cut at the Brewster angle for the fund... | 09/22/2009 |
| 7573921 | Laser light source A laser light source is disclosed consisting of first and second lasers that respectively generate laser beams of wavelengths λ1 and λ2. Wavelength λ1 is in the range of 0.9-1.0 μm. A nonlinear optical crystal uses the laser beam... | 08/11/2009 |
| 7551654 | Coherent light source and optical system In a coherent light source in which limitations on the wavelength of emitted light are relaxed, a coherent light source for simultaneously emitting a first light (3) and a second light (4) having a wavelength shorter than that of the first light (3 | 06/23/2009 |
