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7627006 |
Multi-wavelength laser source
A multi-wavelength laser source is provided including a pump laser unit, a gain section and an output. The pump laser unit generates an energy signal, which is applied to the gain section. The gain...
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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...
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7613214 |
Multi-wavelength mode locked laser
A mode-locked laser employs a light-wavelength-dependent, path-length adjuster to provide different path-lengths for multiple light frequencies and dual modulation frequencies selecting multiple...
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7606274 |
Mid-IR instrument for analyzing a gaseous sample and method for using the same
An optical nose for detecting the presence of molecular contaminants in gaseous samples utilizes a tunable seed laser output in conjunction with a pulsed reference laser output to generate a...
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7599411 |
WDM-PON system with optical wavelength alignment function
A PLC-based wavelength-tunable WDM-PON system with an optical wavelength alignment function, the WDM-PON system comprises: a PLC platform formed on a silicon substrate; a semiconductor chip...
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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...
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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...
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7580183 |
Light generator, optical amplifier, and optical communication system
In an optical amplifier according to the present invention, a change signal from a change signal source is fed into a light source or a drive circuit. The wavelength of light outputted from the...
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7564890 |
Laser equipment
A laser equipment for outputting output lights having different wavelengths includes: a substrate; an excitation light generation element for emitting excitation lights including surface emitting...
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7561604 |
Laser light source device, illumination device, image display device, and monitor device
A laser light source device includes: a light source; an external resonator, a wavelength conversion element converting the wavelength of part of incident light having the first wavelength into the...
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7558301 |
Multiwavelength semiconductor laser array and method of fabricating the same
A multiwavelength semiconductor laser array and a method of fabricating the same are provided. Laser resonators having stacked quantum dot active regions of different emission wavelengths are...
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7539223 |
Light emitting device
A light emitting device includes a light emitting element which emits light with a first wavelength; and a light emitting conversion unit for converting the light with the first wavelength by using...
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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...
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7535628 |
Laser light source, method of laser oscillation, and method of laser processing
A laser light source includes a light source section for outputting pulse laser light λ 1 , λ 2 with a mutually identical repetition frequency, an optical amplification section for amplifying...
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7529280 |
Tunable laser apparatus and methods
A tunable laser has a first optical element spaced apart from a second optical element to form a laser cavity of fixed length there between. An optical gain medium is in at least part of the laser...
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7505495 |
Optical assembly comprising multiple semiconductor optical devices and an active cooling device
An optical assembly comprises a first semiconductor optical device and a second semiconductor optical device. The first and second semiconductor optical devices may, for example, be laser diodes or...
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7489437 |
Fiber laser red-green-blue (RGB) light source
An RGB light source that uses an optical fiber laser to generate a near-infrared (NIR) output light beam, and a wavelength conversion system that receives the output NIR light beam and forms...
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7486709 |
Semiconductor laser micro-heating element structure
A semiconductor laser is provided comprising a semiconductor substrate, an active region, a ridge waveguide, a driving electrode structure, and a micro-heating element structure. The micro-heating...
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7485892 |
Optical broadband emitters and methods of making the same
An optical broadband emitter and the method of making such a broadband emitter are described. Intermixing of closely coupled multiple quantum wells, especially carrier tunneled coupled quantum...
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7483454 |
Laser system architecture and method of using the same
A color dazzle system to enhance area denial to personnel mission for law enforcement, homeland security, border patrol, and the military effectively by interrupting the ability of combatants to...
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7466725 |
Quantum computer apparatus
Quantum computer includes optical resonator including system group containing systems each having energy states highest-energy state |3>, and other two energy states |1> and |2>, fourth or...
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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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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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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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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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7382810 |
Widely-tunable laser apparatus
A widely-tunable laser apparatus comprises a plurality of tunable lasers having different ranges that overlap to encompass a desired operating range of wavelengths (for example from 1250 nm to 1650...
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7379488 |
External cavity dual wavelength laser system
The number and type of quantum wells in a multi-layer gain structure of an external cavity surface emitting laser (VECSEL) are controlled to provide output light of more than one coherent...
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7377656 |
Projector
A projector of rear-projection type including a light source that outputs a laser beam and a scanner that scans a screen with the laser beam. When a laser beam with energy exceeds an accessible...
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7374959 |
Two-wavelength semiconductor laser device and method of manufacturing the same
A two-wavelength semiconductor laser device includes a first conductive material substrate having thereon first and second regions separated from each other. A first semiconductor laser diode is...
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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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RE40173 |
High efficiency, high power direct diode laser systems and methods therefor
A direct diode laser system includes N laser head assemblies (LHAs) generating N output beams, N optical fibers receiving respective N output beams and generating N received output beams, and a...
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7339968 |
Current biased dual DBR grating semiconductor laser
Dual-wavelength operation is easily achieved by biasing the gain section. Multiple gratings spaced apart from each other are separated from an output aperture by a gain section. A relatively low...
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7339962 |
Frequency locking of multisection laser diodes
A multi-section laser diode control system comprising a multi-section laser diode ( 10 ), microprocessor controller ( 24 ), digital-to-analogue converter ( 28 ), driver circuit ( 30 ) and...
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7315557 |
Multi-wavelength light source apparatus
A pulse sequence is configured by making a pulse waveform output from a pulse light source into a super Gaussian pulse of the third order or higher, and input to a spectrum expanding device. The...
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7310358 |
Semiconductor lasers
Lasers, such as in laser structures, can include two or more semiconductor structures that are substantially identical or that include the same semiconductor material and have substantially the...
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7280570 |
Device for generating a light beam including multiple wavelengths
A device for generating a light beam having several wavelengths includes a beam recombiner arrangement for recombining several laser light beams having different wavelengths. The beam recombiner...
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7280567 |
High-power red, orange, green, blue (ROGB) fiber lasers and applications thereof
An all-fiber device platform for producing high-power ROGB or RGB laser output comprises an optical fiber including multiple waveguide gain regions embedded within a common inner cladding and...
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7277460 |
Generation of optical filaments by use of localized optical inhomogeneities
Optical filaments are formed controllably in a gaseous medium such as air. A phase plate introducing a phase discontinuity or other localized optical inhomogeneity is introduced into the path 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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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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7215836 |
System for amplifying optical signals
The invention is in the field of distributed Raman amplification for digital and analog transmission applications and other applications, e.g., instrumentation and imaging applications, including...
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7199814 |
Direct write holographic printer
A direct write holographic printer for producing RGB color reflection holograms is disclosed. A Nd:YLF crystal ( 1 ) in a laser cavity is excited to produce an emission at 1313 nm which is...
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7184627 |
Optical waveguide grating coupler incorporating reflective optical elements and anti-reflection elements
An optical wavelength grating coupler incorporating one or more distributed Bragg reflectors (DBR) or other reflective elements to enhance the coupling efficiency thereof. The grating coupler has a...
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7167490 |
Optical gain apparatus with pump source wavelength control
An optical fiber laser has an output that is stabilized to adapt to changes in laser operating temperature. At the output of the laser a plurality of wavelength-selective stabilizing reflectors is...
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7130321 |
Intracavity frequency-tripled CW laser with traveling-wave ring-resonator
A traveling-wave ring laser resonator includes one or more gain-elements for generating fundamental radiation and three optically nonlinear crystals. A portion of the fundamental radiation is...
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7113526 |
Multi-wavelength grating-outcoupled surface emitting laser system
A surface emitting semiconductor laser system having four cavities that couple light from a single aperture. Each of the four cavities overlaps at the outcoupling aperture. Each cavity is...
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7088876 |
Frequency comb analysis
Methods and apparatus for generating a frequency comb and for its use in analyzing materials and in telecommunications. The frequency comb is generated by passing pulsed light from a laser through...
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7088762 |
Multi-wavelength laser apparatus with rotatable mirror
In a laser apparatus, a rotatable reflection mirror rotatable on or parallel to a resonance optical axis of a laser medium is disposed changeably between a first and second positions by driving of...
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7079772 |
Optical signal generator with stabilized carrier frequency output
Method and apparatus for stabilizing an optical carrier frequency of a generated carrier signal with respect to a target carrier frequency. The apparatus includes a multi-channel optical filter for...
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