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7627017 |
Laser amplifier and method of making the same
The present invention includes a laser amplifier and a method of making the same. The laser amplifier of the present invention includes a gain medium layer having a first index of refraction, and a...
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7627013 |
Light source module
A light source module for use in display systems is provided herein. According to one exemplary embodiment, the light source module includes a plurality of coherent light sources, and a diffraction...
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7627010 |
Semiconductor laser having Fabry-Perot resonator
A semiconductor laser has a reflectance of the front facet coating film or the rear facet coating film dramatically that decreases at wavelengths greater than a predetermined wavelength. This...
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7622705 |
Dielectric microcavity fluorosensors excited with a broadband light source
A microresonator sensor apparatus has a microcavity resonator that defines equatorial whispering gallery modes (EWGMs), whose frequencies are separated by the free spectral range (FSR). The EWGMs...
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7620086 |
Semiconductor laser and electronic device
In one embodiment of the invention, in a semiconductor laser in which a first conductivity type lower cladding layer, an active layer that includes a quantum well layer, and a second conductivity...
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7616669 |
High energy pulse suppression method
A laser processes a workpiece with laser pulses delivered at random time intervals and at substantially constant energy levels by characterizing the laser cavity discharge behavior and utilizing...
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7609743 |
Volume Bragg lasers based on high efficiency diffractive elements in photo-thermo-refractive glass
A volume Bragg laser including a resonator comprising photo-thermo-refractive (PTR) volume diffractive elements that can be used in a laser emitting window of transparency of PTR glass to provide...
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7609742 |
Star configuration optical resonator
An optical resonator has an internal cavity with an output coupler, an end mirror, and one or more active mirror amplifiers (AMAs) that are arranged in a manner to form a laser radiation...
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7602823 |
Light-emitting element
A light-emitting element includes a light amplification unit and an external resonator. The light amplification unit has a function of amplifying light. The external resonator is connected to the...
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7592632 |
Light emitting device and display device using the same
A small-sized and high-efficiency light emitting device capable of easily emitting green light includes a resonator including a photonic crystal having a refractive-index periodic structure and a...
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7586970 |
High efficiency partial distributed feedback (p-DFB) laser
A second-order multi-mode partial distributed feedback (p-DFB) laser having increased electrical-to-optical power conversion efficiency, stabilized wavelength and narrowed emission linewidth. The...
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7580441 |
Athermal external cavity laser
Provided is an athermal external cavity laser (ECL), whose output optical power and output wavelength can be kept regular irrespective of temperature changes without using additional temperature...
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7580435 |
Laser diode, optical pickup device, optical disk apparatus, and optical communications equipment
A laser diode capable of reducing a radiating angle θ⊥ in the vertical direction, an optical pickup device, an optical disk apparatus, and optical communications equipment, all equipped with the...
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7577179 |
Laser irradiation apparatus
The laser radiation apparatus is provided having substantial light emission intensity although the laser radiation apparatus is miniaturized. A solid state laser rod; the excitation light source...
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7577177 |
Multi-path laser system
A laser chamber is provided that increases power, initiation, and discharge efficiency over single chamber lasers by providing a multi-fold laser chamber, protrusions, discharge segmentation and...
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7573918 |
Dispersion compensated mode-locked pulsed lasers and optical amplifiers
Techniques, apparatus and systems for providing compensation mechanisms for mode-locked lasers and optical amplifiers and a dispersion compensation mechanism to allow a mode-locked laser and an...
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7567608 |
Volume Bragg grating laser mirror device
A volume Bragg grating (VBG) has a narrow wavelength. The wavelength is changed by changing an angle of the VBG or a temperature of the VBG. Thus, the present invention has a narrow wavelength, a...
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7564887 |
Long wavelength vertical cavity surface emitting lasers
A vertical cavity surface emitting laser (VCSEL) includes independently definable current and optical confinement structures that provide unique forms of drive current and transverse mode...
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7561611 |
Extended-lifetime elements for excimer lasers
The invention is directed to elements used in high power laser lithographic systems operating at below 250 nm, and in particular to elements that have a coating of selected materials to extend...
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7555024 |
Resonator cavity configuration and method
A resonator cavity ( 10 A) and method and presented. The resonator cavity ( 10 A) comprises at least one gain medium ( 16 ) and end reflectors ( 12, 14 ) which define together longitudinal modes of...
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7553048 |
Stabilized mirror system for a handheld laser pointer
A hand-held laser pointer is disclosed wherein the laser beam is isolated from unwanted hand tremor motions of the laser pointer housing. A laser beam is directed toward a pair of passively...
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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...
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7548572 |
Stabilized solid-state laser gyroscope
The field of the invention is that of solid-state laser gyros. One of the major problems inherent in this technology is that the optical cavity of this type of laser is by its nature highly...
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7545843 |
Ultra-high Q micro-resonator and method of fabrication
A micro-cavity resonator including a micro-cavity capable of high and ultra-high Q values and a silicon substrate. Portions of the silicon substrate located below a periphery of the micro-cavity...
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7539232 |
Compact phase locked laser array and related techniques
An electro-optical system includes a plurality of electromagnetic gain media having a corresponding plurality of apertures. The apertures are disposed in a predetermined spatial distribution. The...
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7535946 |
Structure using photonic crystal and surface emitting laser
A structure includes a photonic crystal layer including a first member having a high refractive index in which a plurality of holes are periodically arranged, and a second member having a low...
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7535634 |
Optical device, system, and method of generating high angular momentum beams
An optical device, optical system, and method of generating optical beams having high angular momenta are provided. The optical device includes a whispering gallery mode resonator defining a...
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7532649 |
Optical cavity for coherent superposition of optical pulses
An apparatus is described that includes an optical storage cavity comprising a planar mirror and a spherically curved mirror that form an optical path therebetween. A pump laser introduces optical...
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7515626 |
Light source capable of lasing that is wavelength locked by an injected light signal
Various methods, systems, and apparatuses are described in which a light source ( 101 ) capable of lasing is wavelength locked by an injected light signal. The light source ( 101 ) capable of...
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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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7508858 |
Detuned duo-cavity laser-modulator device and method with detuning selected to minimize change in reflectivity
A detuned duo-cavity laser-modulator device and method are provided which include lower, middle and upper reflectors, a gain region and an absorber region integrated into a semiconductor die. The...
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7505488 |
Synthetic aperture ladar with chirped modelocked waveform
The present invention uses an intra-cavity modulation approach to modulate a laser transmitter at bandwidths greater than a few gigahertz (GHz) in a non-ambiguous waveform by chirping the laser and...
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7499481 |
Surface-emitting laser and method for producing the same
A surface-emitting laser includes reflectors. One of the reflectors has multiple layers including one or more high-refractive-index layers and one or more low-refractive-index layers which are...
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7499480 |
Photonic crystal structure and surface-emitting laser using the same
A structure includes a photonic crystal layer which has a first member having a first refractive index and having a surface with a plurality of holes periodically arranged therein, and includes a...
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7496118 |
External cavity resonator type tunable light source which can be easily manufactured and which is capable of wavelength sweeping at high speed
A collimator lens converts light beams emitted from a low reflectance facet of a semiconductor laser into parallel light beams. A diffraction grating receives and diffracts the light beams at a...
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7486714 |
Pump laser integrated vertical external cavity surface emitting laser
Provided is a vertical external cavity surface emitting laser (VECSEL) in which a pump laser is integrated with the rest of the VECSEL as a single body. The VECSEL includes: a first active layer...
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7483469 |
Surface-emitting type semiconductor laser and its manufacturing method, optical module, and light transmission device
To provide surface-emitting type semiconductor lasers that can emit laser light with a high power output and a narrow radiation angle, and methods for manufacturing the same. A surface-emitting...
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7466734 |
Compact external cavity mid-IR optical lasers
Highly compact quantum well based laser systems with external cavity configurations are tightly integrated in a very small mounting system having high thermal and vibrational stability. The...
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7463668 |
Wavelength tunable cavity with rotational movement
A wavelength tunable cavity includes a first reflecting unit adapted to at least partially reflect a beam of electromagnetic radiation towards a second reflecting unit, adapted to at least...
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7463666 |
Laser with hybrid-unstable ring resonator
A unidirectional ring laser oscillator has a travelling wave unstable mode in one transverse dimension and either a waveguide or freespace Gaussian mode in the orthogonal transverse dimension for...
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7460568 |
Apparatus as tuning filter
An apparatus as a tuning filter is provided for tuning the wavelength of a laser or a filter between extensive bandwidths, including a reflecting element, an optical system and a movable mount set...
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7450800 |
Precise and permanent modification of the resonant frequency of a dielectric microcavity and correction of frequency shifts in dielectric coupled-resonator filters
A coupled resonator includes a plurality of resonators such that at least one of the resonators is modified so as to adjust the resonant frequency associated with the coupled resonator.
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7450240 |
Laser device coupled to a cavity by optical feedback for detecting gas traces
A device of detection of gas in trace amounts by a semiconductor laser coupled to a resonant optical cavity containing a chemical species to be analyzed. The device comprises a resonant optical...
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7447249 |
Lighting system
A lighting system includes a microwave resonator ( 2 ) for generating a standing microwave in the internal space, and a gas cell ( 6 ) enclosing a medium is disposed in the internal space of the...
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7447248 |
Semiconductor laser element and semiconductor laser element array
The present invention relates to a semiconductor laser element and the like which can efficiently emit laser beams at a small emission angle using a simpler configuration. The semiconductor laser...
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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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7440643 |
Variable light controlling device and variable light controlling method
A variable light controlling device comprising a substrate, an optical waveguide disposed on the substrate, a first heater and a second heater to change the optical waveguide's temperature is...
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7440483 |
Cascaded injection resonator for coherent beam combining of laser arrays
The invention provides a cascaded injection resonator for coherent beam combining of laser arrays. The resonator comprises a plurality of laser emitters arranged along at least one plane and a beam...
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7436873 |
Optical device and semiconductor laser oscillator
In an optical device, a slab layer includes an active layer sandwiched between cladding layers. The slab layer has a periodic refractive index profile structure in a two-dimensional plane, as a...
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7433381 |
InP based long wavelength VCSEL
A long wavelength vertical cavity surface emitting laser having a substrate, a first mirror situated on the substrate, an active region situated on the first mirror, a second mirror situated on the...
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