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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...
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7620093 |
Laser device, laser module, semiconductor laser and fabrication method of semiconductor laser
A semiconductor laser has first and second diffractive grating regions. The first diffractive grating region has segments, has a gain, and has first discrete peaks of a reflection spectrum. The...
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7620091 |
Broadband laser lamp with reduced speckle
The present invention is directed to a laser resonator emitting visible radiation with reduced speckle noise, wherein said optical resonator is formed by at least two mirrors at both ends of a...
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7616673 |
Semiconductor laser device
A semiconductor laser device includes a semiconductor laser body including a resonator and having a front end face and a rear end face facing each other, the resonator being located between the...
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7615722 |
Amorphous silicon crystallization using combined beams from optically pumped semiconductor lasers
An amorphous silicon layer on a glass substrate is crystallized by concentrating CW radiation from a number of OPS-lasers into a line of light on the layer. The layer is moved with respect to the...
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7609745 |
Semiconductor laser apparatus
A novel semiconductor laser device is provided which can suppress internal optical absorption even when In is used as a material for a semiconductor multilayer mirror containing a nitride. The...
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7606284 |
Semiconductor laser structure including quantum dot
Provided is a distributed feedback semiconductor laser structure including: a first clad layer; a first ridge waveguide formed on the first clad layer; an active layer formed on the first ridge...
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7602827 |
Semiconductor laser and manufacturing process therefor
There is provided a semiconductor laser comprising an n-InP substrate 1 ; a multilayer film including a strained MQW active layer 6 on the n-InP substrate 1;
a p-electrode 18 on the...
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7599405 |
Method and apparatus for coherently combining multiple laser oscillators
A laser apparatus having multiple laser devices coupled together. The laser devices comprise optical fibers with laser active regions. Each of the fibers has a reflector disposed at one end and is...
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7596165 |
Distributed Bragg Reflector for optoelectronic device
A Distributed Bragg Reflector (DBR) that has relatively low light absorption, relatively low electrical resistance, and/or relatively good thermal conductivity. The DBR may include a first mirror...
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7581835 |
Light show device and method of entertaining
A light show device includes a light source configured to generate a light beam having a substantially constant diameter, a container having a substantially transparent portion, a plurality of...
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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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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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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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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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7564880 |
Laser intra-cavity electronic wavelength tuner
An apparatus for adjusting the wavelength of a laser capable of lasing at multiple wavelengths by using a single acousto-optical modulator and a pair of optical reflectors inside a laser cavity. By...
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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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7548574 |
Integrated modulator/laser assembly and a method of producing same
An laser/modulator assembly includes a laser source, such as a distributed feedback (DFB) laser, and a modulator, such as an electro-absorption modulator (EAM), integrated along a common waveguide....
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7548569 |
High-power optically end-pumped external-cavity semiconductor laser
A high-power optically end-pumped external-cavity semiconductor laser is provided having a laser chip including an active layer and a distributed Bragg reflector (DBR) for emitting light of a...
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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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7535942 |
Semiconductor laser device including a light shield plate, semiconductor laser device package, and methods of manufacturing the same
Provided is a semiconductor laser device, a semiconductor laser device package including the semiconductor laser device and methods of manufacturing the same. A semiconductor laser device may...
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7526009 |
End-pumped vertical external cavity surface emitting laser
There is provided an end-pumped vertical external cavity surface emitting laser (VECSEL) in which a pump laser beam is incident on a laser chip at a right angle. In the external cavity surface...
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7519095 |
Vertical-cavity, surface-emission type laser diode and fabrication process thereof
A vertical-cavity, surface-emission-type laser diode includes an optical cavity formed of an active region sandwiched by upper and lower reflectors, wherein the lower reflector is formed of a...
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7512170 |
Method of forming mirrors by surface transformation of empty spaces in solid state materials
A multi-layered reflective mirror formed of spaced-apart plate-shaped empty space patterns formed within a substrate is disclosed. The plurality of plate-shaped empty space patterns are formed by...
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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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7492802 |
End pumping vertical external cavity surface emitting laser apparatus
Provided is a vertical cavity external surface emitting laser (VECSEL) apparatus in which incidence loss of a pumping beam can be reduced. The VECSEL apparatus includes: a laser chip including: an...
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7489714 |
Speckle reduction laser and laser display apparatus having the same
A speckle reduction laser and a laser display apparatus having the speckle reduction laser are provided. The speckle reduction laser includes a semiconductor unit that comprises an active layer and...
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7480321 |
Vertical external cavity surface emitting laser (VECSEL) having modulating mirror and display apparatus employing the same
A vertical external cavity surface emitting laser (VECSEL) having an improved mirror that forms an external cavity to modulate an emitted laser beam and display apparatus employing the same are...
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7476907 |
Plated multi-faceted reflector
A nano-resonating structure constructed and adapted to include additional ultra-small structures that can be formed with reflective surfaces. By positioning such ultra-small structures adjacent...
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7474467 |
Ultrashort pulse compressor
A pulse compressor. In one embodiment, the pulse compressor comprises an optical medium adapted for receiving a beam of light in an incident optical path and dispersing it into its constituent...
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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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7463667 |
Solid-state laser and multi-pass resonator
A laser system may include a solid-state laser gain material (LGM) module. The system may also include a multi-pass resonator including a plurality of relay mirrors. The plurality of mirrors may be...
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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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7443893 |
Method and system for tunable pulsed laser source
A tunable pulsed laser source comprising a seed source adapted to generate a seed signal and an optical circulator. The optical circulator includes a first port coupled to the seed source, a second...
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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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7436874 |
Laser device
According to the present invention, a first p-side electrode 7 A made of metal which is provided with regularly arranged holes 10 having a diameter smaller than a laser oscillation wavelength...
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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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7428257 |
Apparatus for optical pumping of a laser-active solid body
An apparatus for optically pumping a laser-active solid body with pumping light coupled into the solid body through an end surface of the solid body is disclosed. The apparatus includes a...
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7428253 |
Method and system for a pulsed laser source emitting shaped optical waveforms
A tunable pulsed laser source includes a seed source adapted to generate a seed signal and an optical circulator having a first port coupled to the seed source, a second port, and a third port. The...
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7426229 |
Line narrowing module, light source of exposure apparatus comprising the same, and method of producing exposure light using line narrowing
A line narrowing module includes an elliptical mirror, a diffraction grating disposed at a first focus of the mirror for separating an incident beam into different lines, and a laser beam...
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7425726 |
Electroabsorption modulators and methods of making the same
Electro-absorption modulators and methods of making the same are described. In one aspect, an electroabsorption modulator includes first and second electrodes, first and second cladding regions, an...
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7424044 |
Semiconductor laser device
The semiconductor laser device 1 A has a semiconductor laser array 3 including a plurality of active layers 2 arranged in parallel along a slow direction, and outputs laser beams from the...
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7421002 |
Laser-induced optical wiring apparatus
A laser-induced optical wiring apparatus includes a substrate, first and second light-reflecting members provided on the substrate separately from each other, an optical waveguide provided on the...
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7418025 |
Wavelength monitoring method and apparatus and method of making same
A wavelength of an optical source is monitored by first and second adjacent detectors on a common base. A bulk reflective component has first and second partially reflective surfaces that...
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7415057 |
Unstable optical resonator and laser device
An unstable optical resonator for an optically active medium comprising a spherical back mirror and a spherical outcoupling mirror is proposed, and an outcoupling which is asymmetrical in relation...
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7411989 |
Mechanically Q-switched CO2 laser
A CO 2 laser has a resonator mirror that oscillates about an axis perpendicular to the resonator axis through an angular range of oscillation sufficient that the resonator is only able to deliver...
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7408972 |
Optically pumped semiconductor laser device
An optically pumped semiconductor laser device having a surface-emitting vertical emission region ( 1 ) and at least one monolithically integrated pump radiation source ( 2 ) for optically pumping...
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7408971 |
Longitudinally pumped solid state laser and methods of making and using
A laser apparatus for producing a laser light beam can include a gain medium; a pump light source to provide a pump light beam to the gain medium; a first reflector disposed between the first gain...
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