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7529281 |
Light source with precisely controlled wavelength-converted average power
Control of average wavelength-converted power and/or wavelength converted pulse energy is described. One or more seed pulses may be generated and amplified with an optical amplifier to produce one...
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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...
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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...
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7511878 |
Wavelength conversion element with quasi-phase matching structure
A wavelength conversion element with a Quasi-Phase Matching structure which can suppress the ripples of fluctuation pulse waveforms of a change efficiency in a frequency band of the waveform...
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7505491 |
Frequency-converted high-power laser with recirculating polarization control
A frequency-tripled laser-resonator has three resonator-branches. The branches are optically connected with each other by one or more polarization-selective devices. Unpolarized fundamental...
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7502393 |
Light-emitting device having resonator and light source unit including the light-emitting device
To provide a light-emitting device having a resonator capable of stably and efficiently taking out light. The device includes an active medium, a resonator for confining the light having a first...
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7492506 |
Wavelength converting element, light source device, lighting device, monitoring device, and projector
The disclosure refers to a wavelength converting element, light source device, lighting device, monitoring device, and projector. In one example, a wavelength converting element comprises a...
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7489436 |
Hybrid integrated source of polarization-entangled photons
Various embodiments of the present invention are directed to systems configured to generate polarization-entangled photons. In one embodiment of the present invention, a polarization-entangled...
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7486433 |
High-luminance quantum correlation photon beam generator
A high-luminance quantum correlation photon beam generator in which a laser light source ( 1 ) emits a laser pumped light and a parametric crystal ( 2 ) generates a pair of two photons of a signal...
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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...
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7471707 |
Low noise, intra-cavity frequency-doubling micro chip laser with wide temperature range
A low-noise micro-chip laser includes a diode pump, a gain medium, a nonlinear crystal, and a birefringent material. The gain medium can receive the energy from the diode pump and generate a laser...
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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...
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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...
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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...
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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...
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7460569 |
Solid state UV laser
An apparatus ( 10 a ) for scanning a light beam ( 16 ) through a crystal arrangement ( 22 ) that has a first frame member ( 28 ), a first support member ( 24 ) to support a first optical element (...
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7457330 |
Low speckle noise monolithic microchip RGB lasers
A method for reducing speckle noise of a monolithic microchip laser with intracavity beam combining and sum frequency mixing is based on time averaging of uncorrelated speckle patterns generated...
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7446931 |
Compact multicolor light beam source
A plural wavelength light beam source may include one or more integrated laser diodes and a wavelength-conversion source such as a second harmonic generation laser. According to some embodiments...
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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...
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7446930 |
Method of inverting polarization by controlling defect density or degree of order of lattice points
A problem to be solved is to provide a method of forming domain inverted regions of short period in a ferroelectric single crystal in a controllable time period of application of voltage and an...
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7447245 |
Optically pumped semiconductor laser pumped optical parametric oscillator
An optically pumped semiconductor pumped optical parametric oscillator (OPS-pumped OPO) includes an OPS laser resonator and an OPO resonator A portion the OPS laser resonator axis and the OPO...
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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...
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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...
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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...
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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...
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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,...
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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...
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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...
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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...
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7411991 |
Tunable laser
Embodiments of methods, apparatuses, devices, and/or systems for a tunable laser are described. An apparatus includes: a tunable laser cavity including at least three mirrors, at least one filter...
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7408963 |
Medical laser apparatus
A medical laser apparatus suitable for medical treatment, which is capable of obtaining a plurality of visible laser beams each having a different wavelength, but which has an inexpensive...
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7403549 |
Wavelength conversion laser and image display
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...
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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...
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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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7386017 |
Synthetic guide star generation
A system for assisting in observing a celestial object and providing synthetic guide star generation. A lasing system provides radiation at a frequency at or near 938 nm and radiation at a...
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7382812 |
Solid state laser device
The transmittance of an etalon relative to an oscillating line having the wavelength of 1061.6 to 1062.2 nm by an Nd:YAG laser medium 3 is set to 0.9 or lower (the maximum value of the...
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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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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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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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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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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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