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7397829 |
Vertical external cavity surface emitting laser
Provided is a VECSEL capable of achieving an excellent efficiency of a SHG crystal and being manufactured in a compact size. The VECSEL includes a laser chip, an external mirror, an SHG crystal, a...
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7394841 |
Light emitting device for visual applications
A light emitting device comprises a waveguide having an electrically pumped gain region, a nonlinear medium, and an inclined mirror. Light pulses emitted from the gain region are reflected by the...
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7391794 |
Injection seeding of frequency-converted Q-switched laser
A non-linearly frequency-converted Q-switched laser is “injection seeded” with short pulses from another laser, called a seed laser. Radiation produced by the Q-switched laser is frequency...
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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...
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7388709 |
Multiple path infrared energy source
A multiple path light source has a first and second laser source that generate low power continuous wave laser beam at wavelength λ1 and λ2 respectively. A pump laser source generates a high...
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7386021 |
Light source
In a first broad aspect, the invention provides a light source. The light source includes a semiconductor laser for emitting laser light at a first frequency. The light source also includes an...
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7385752 |
Disposal of residual radiation from a frequency-conversion process
A frequency-conversion arrangement including one or more optically nonlinear crystals is located in an enclosure. Radiation residual from the frequency conversion is directed into an optical fiber...
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7382523 |
Beam-guiding and/or frequency-converting optical system and method for producing the same
The present invention relates to a beam-guiding and/or frequency-converting optical system as well as to a method of manufacturing same, wherein a beam-emitting optoelectronic component ( 1 ),...
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7378042 |
Nonlinear optical crystal optimized for Ytterbium laser host wavelengths
A material for harmonic generation has been made by substitutional changes to the crystal LaCa 4 (BO 3 ) 3 also known as LaCOB in the form Re1 x Re2 y Re3 z Ca 4 (B0 3 ) 3 O where Re1 and Re2,...
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7376161 |
Modulation light source, image display apparatus including the same, and method of driving modulation light source
A modulation light source capable of maintaining thermal stability of a gain part is provided. A modulation light source includes a DBR laser having a DBR part, a phase part and a gain part, a...
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7362783 |
Optical frequency mixing
A method of generating coherent radiation, wherein a first fundamental beam of radiation from a four level laser and a second fundamental beam of radiation from a three level laser are mixed in a...
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7359420 |
Manufacturable vertical extended cavity surface emitting laser arrays
Arrays of vertical extended cavity surface emitting lasers (VECSELs) are disclosed. The functionality of two or more conventional optical components are combined into an optical unit to reduce the...
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7357513 |
System and method for driving semiconductor laser sources for displays
A light engine includes a multi-color laser source having a set of semiconductor lasers. A controller synchronizes the operation of the laser source to operate in a color sequential order with a...
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7354157 |
Image display device and light source device
An image display device includes a laser light source, a wavelength conversion element converting a wavelength of a light beam emitted from the laser light source into a predetermined wavelength,...
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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...
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7349451 |
Harmonic pulse laser apparatus, and method for generating harmonic pulse laser beams
A KTP crystal is irradiated by a long-pulse fundamental wave pulse laser beam having a pulse width of 100 μs or longer typically output from a solid-state pulse laser such as a YAG pulse laser. In...
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7349149 |
Doubly-resonant optical parametric oscillator with corresponding pump recycling
The oscillator comprises two resonant cavities in which a non-linear crystal ( 3 ) is situated. The incident pumping radiation R pe follows an emitting path across the crystal, the generated...
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7346084 |
Device for generating lossless pulse ultraviolet laser beam
There is provided a device for generating a lossless pulse ultraviolet laser beam of generating a laser beam having a desired wavelength by repeatedly rotating a laser beam generated by a pulse...
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7339961 |
Wavelength converting optical system, laser light source, exposure apparatus, device for inspecting object of inspection, and polymer crystal working apparatus
A fifth harmonic wave is formed from a fundamental wave of P polarization via a second harmonic wave forming optical element 3 , a third harmonic wave forming optical element 4 , and a fifth...
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7339721 |
Optical fiber light source based on third-harmonic generation
An optical-fiber-based light source that generates light via third-harmonic (TH) generation is disclosed. The light source includes a pump light source that provides pump light having a fundamental...
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7339719 |
Packaging of frequency-doubled, extended-cavity, surface-emitting laser components on a common substrate
In one embodiment, a laser module comprising an optical element, a frequency converter, a selective reflector, and one or more surface-emitters, each coupled to a common substrate, wherein the...
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7339717 |
Method and system for use in optical code division multiple access
A method and device are provided for automatically generating a key and a conjugate key to be used in an optical code division multiple access system. The method comprises applying a down...
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7339964 |
Laser diode with phase matching grating
A semiconductor diode laser that generates light at wavelengths longer than conventional diode lasers. The laser includes a first gain element that generates a first “pump” laser beam having a...
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7330490 |
Optical wavelength converter and image forming apparatus using the same
An optical wavelength converter includes a distributed Bragg reflector laser having an active area, a phase area, and a distributed Bragg reflector area in which a distributed Bragg reflector is...
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7327768 |
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...
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7322704 |
Frequency stabilized vertical extended cavity surface emitting lasers
A vertical extended cavity surface emitting laser (VECSEL) includes intra-cavity frequency doubling. Conventional frequency control elements, such as etalons, are replaced with thin film...
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7313155 |
High power Q-switched laser for soft tissue ablation
The present invention discloses a high power Q-switched, intracavity frequency-doubled laser for laser ablation of soft tissue. Operating a high power Q-switched laser in a frequent on-off mode is...
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7305015 |
Ultraviolet laser-generating device and defect inspection apparatus and method therefor
An ultraviolet laser-generating device, for use in a defect inspection apparatus and a method thereof, etc., comprising: a laser ray source for irradiating and emitting a basic wave of laser ray...
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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...
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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...
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7286282 |
Wavelength conversion method, wavelength conversion laser, and laser beam machining apparatus
A fundamental laser beam is wavelength converted through nonlinear optical crystals by traveling in one direction, sequentially through two nonlinear optical crystals arranged in series. A...
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7277220 |
Ultraviolet laser apparatus and exposure apparatus using same
A laser apparatus including a laser generating portion that generates pulse light having a single wavelength within a range from an infrared band to a visible band. An optical amplifier is...
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7269189 |
Coherent light source based on sum-frequency mixing
A method and a device for generating visible coherent radiation is disclosed. The visible coherent radiation is generated by sum-frequency mixing of a first fundamental beam from a diode laser and...
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7260123 |
Semiconductor light-emitting apparatus having wavelength conversion portion and method of fabricating the same
A semiconductor light-emitting apparatus which has a simple structure can include a base having a concave portion having an upward opening, a semiconductor light-emitting device placed on the...
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7248618 |
Systems and methods for second harmonic generation using three-dimensional Bragg grating elements
Apparatus and methods for altering one or more spectral, spatial, or temporal characteristics of a light-emitting device are disclosed. Generally, such apparatus may include a volume Bragg grating...
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7248397 |
Wavelength-doubling optical parametric oscillator
A wavelength-doubling optical parametric oscillator (OPO) comprising a type II nonlinear optical medium for generating a pair of degenerate waves at twice a pump wavelength and a plurality of...
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7242700 |
Stabilized frequency-converted laser system
A laser system includes an optically pumped laser resonator that produces a fundamental-wavelength beam. A temperature-tuned frequency converter outside the laser resonator converts a portion of...
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7242699 |
Wavelength tunable semiconductor laser apparatus
The present invention relates to wavelength tunable DBR semiconductor laser devices in which light waves generated from a plurality of laser portions (or laser channels) are combined. This type of...
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7239654 |
Wave length plate, wavelength filter and wavelength monitor
On a plate of birefringent crystal made of an LiNbO 3 crystal or an LiTaO 3 crystal, a conductive substance is adhered to the whole periphery of side surfaces of the plate that intersect an...
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7221689 |
Laser apparatus
A laser apparatus capable of emitting laser beams of a plurality of different wavelengths includes: a solid-state laser medium which emits light of a plurality of different peak wavelengths; a...
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7218653 |
Wavelength conversion method and wavelength conversion element
An ultraviolet laser is provided that increases the conversion efficiency of laser beams when harmonics having wavelengths of less than 355 nm are generated by converting laser beams with a...
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7209504 |
Solid laser apparatus
A solid laser apparatus has either a combination of a lowpass filter ( 9 c ) and a highpass filter ( 9 d ) or a bandpass filter 9 f provided in its output control circuit ( 8, 9, 10 ) for...
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7209501 |
Multi-wavelength laser source based on two optical laser beat signal and method
In the system of the present invention, two DFB laser outputs are combined in a first stage to produce a beat signal. The two main channels interfere with each other to form beat signals. This...
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7198738 |
Cesium-lithium-borate crystal and its application to frequency conversion of laser light
The present invention provides a cesium-lithium-borate crystal, which can be used as a high-performance wavelength converting crystal, having a chemical composition expressed as CsLiB6O10, and...
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7197059 |
Short wavelength diode-pumped solid-state laser
A diode-pumped solid-state laser including a short wavelength (e.g., blue, violet, or UV) semiconductor laser that pumps an absorption transition in a rare-earth-doped material. Responsive to this...
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7177340 |
Extended cavity laser device with bulk transmission grating
A laser apparatus is disclosed utilizing a laser diode having a reflective back facet and a front facet having a reflectance of less than about 1% for emitting an optical beam at a fundamental...
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7173950 |
Low-noise high-power SHG laser system
A second harmonic generation laser system comprising: a non-linear frequency converting medium; and an external cavity pump laser that produces optical energy at a single mode and at a single...
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7170912 |
Laser drilling system and method for flexible printed circuit board
A laser drilling system for flexible printed circuit board includes a first mirror, a second mirror, a laser crystal, a third harmonic generator and a second harmonic generator. The first mirror...
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7170911 |
Wavelength conversion apparatus
A wavelength conversion apparatus in which output direction of a wavelength-converted laser beam, having a wavelength converted by a nonlinear optical crystal and emitted through an output-window,...
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7158548 |
Laser cavity
A laser cavity comprising a gain medium and first and second end mirrors, wherein the laser cavity further comprises a birefringent material and a mirror arranged to fold light propagating within...
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