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7602821 |
Device for generating laser radiation in the infrared
The invention is in the field of laser radiation generation in bands II and III, and relates to a device for generating laser radiation in the infrared having means for modifying the...
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7590161 |
Electron beam pumped semiconductor laser
Electron-beam-pumped semiconductor ultra-violet optical sources (ESUVOSs) are disclosed that use ballistic electron pumped wide bandgap semiconductor materials. The sources may produce incoherent...
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7590155 |
Hybrid high power laser to achieve high repetition rate and high pulse energy
A fiber laser cavity that provides a new pulse shaping and spectral shaping technique is disclosed in this invention to achieve the purpose of resolving the difficulties arising from the issues...
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7542501 |
Laser system comprising a number of longitudinally pumped laser-active solid bodies
The aim of the invention is to obtain a laser system with the highest possible power that operates as stably as possible. This object is achieved in the case of a laser system by the laser...
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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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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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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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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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7379486 |
Technique for optically pumping alkali-metal atoms using CPT resonances
Systems and methods for optically pumping alkali-metal atoms using Coherence Population Trapping (CPT) resonances are disclosed. An illustrative push-pull optical pumping system for inducing CPT...
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7376296 |
Optical multiplexer
The invention provides an optical multiplexing device comprising: a plurality of optical sources with integrated collimators ( 31 - 37 ) whose output beams are combined by mirrors ( 41 - 47 ) or...
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7346091 |
High energy solid-state laser with offset pump and extraction geometry
A laser system and method. The inventive laser includes an annular gain medium; a source of pump energy; and an arrangement for concentrating energy from the source on the gain medium. In a more...
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7286587 |
Holmium doped 2.1 micron crystal laser
A Ho:YAG crystal laser is disclosed which is doped with less than 2% holmium to reduce the lasing threshold and up-conversion, thereby increasing the operating efficiency of the laser. The laser...
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7274723 |
Method for amplifying a solid-state laser
Conventionally, a laser beam is amplified by making a single pass through an amplifier but the laser beam emitted from the oscillator generally has low energy, so the energy stored in the amplifier...
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7203214 |
Off-peak optical pumping of yttrium orthovanadate
A laser includes an Nd:YVO4 crystal end-pumped with diode-laser light having a wavelength at which the absorption coefficient for Nd:YVO4 is less than about 0.35 (35%) of the absorption coefficient...
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7187703 |
Intracavity sum-frequency mixing laser
Provided is a diode-pumped solid-state laser adapted for an intracavity sum-frequency mixing for generating a laser radiation of a visible wavelength range by performing a sum-frequency mixing of...
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7126976 |
Solid state lasers and a method for their production
The present invention relates to a solid-state laser comprising: a) a semiconductor pump laser, b) a lens integrated on the surface of said semiconductor pump laser, c) a packaging material...
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7120184 |
Phasing surface emitting diode laser outputs into a coherent laser beam
A system for generating a powerful laser beam includes a first laser element and at least one additional laser element having a rear laser mirror, an output mirror that is 100% reflective at normal...
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H002161 |
Solid state laser pumped by visible light-emitting-diode
Visible light-emitting-diodes (LEDs) are inexpensive, provide emissions in many wavelengths and are powerful enough to pump solid state laser rods. The LED light is directed to the laser rod (laser...
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7046712 |
Laser resistant to internal ir-induced damage
Co-doping the gain medium of a diode-pumped infrared laser to make the laser resistant to long-term degradation from high-intensity internal infrared radiation is disclosed. Co-doping the gain...
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7039087 |
End pumped slab laser cavity
The End Pumped Slab Laser Cavity incorporates all optical components required for a short-pulse laser. These optical components are ‘locked’ into alignment forming an optical laser cavity for...
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6999481 |
Method and device for reducing the pump light in a sheat-pumped fiber laser output
A pump fiber is stripped of its cladding over the last section. This can occur by etching a coating off. The sheath is preferably etched off wedge-shaped. As a result thereof, the remaining pump...
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6996144 |
Wavelength stabilization of tunable lasers by current modulation
Apparatus and method for stabilizing the wavelength of a tunable laser to a target wavelength, by correspondingly adjusting the electrooptical performance of the laser's gain medium, whereby to...
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6978063 |
Compact optical fiber amplifier module
An optical fiber amplifier module is disclosed which comprises a signal path located between a signal input and a signal output. A WDM coupler and an amplifying gain medium are disposed along the...
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6937636 |
Tapered laser rods as a means of minimizing the path length of trapped barrel mode rays
By tapering the diameter of a flanged barrel laser rod over its length, the maximum trapped path length of a barrel mode can be dramatically reduced, thereby reducing the ability of the trapped...
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6914928 |
Diode array end pumped slab laser
A diode pumped solid state laser using a laser diode bar or a stack of bars with cylindrical lenses is used to end pump a rectangular cross section solid state laser slab. The combination of lenses...
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6914915 |
OPTICAL FIBER AMPLIFIER THAT CAN ATTAIN SUFFICIENT GAIN SHIFT EFFECT, SMALL NOISE PROPERTY AND HIGH OPERATION EFFICIENCY AT THE SAME TIME EVEN IN TWO-WAVELENGTH EXCITATION TM DOPANT OPTICAL FIBER AMPLIFIER, AND OPTICAL AMPLIFIER HAVING THE SAME
A laser amplifier includes a gain medium of a glass fiber, a first exciting light source, a second exciting light source, and another first exciting light source. The gain medium of the glass fiber...
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6891876 |
Method and apparatus for polarization and wavelength insensitive pumping of solid state lasers
An optical system has a diode pump source, and a gain media made of a material with an anisotropic absorption. The gain media is cut at an angle to produce substantially polarization-independent...
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6862312 |
Quantum dot tunable external cavity laser (QD-TEC laser)
A laser system includes a laser diode with a low dimensional nanostructure, such as quantum dots or quantum wires, for emitting light over a wide range of wavelengths. An external cavity is used to...
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6833946 |
Optical amplification using polarization diversity pumping
This invention describes new developments in Sagnac Raman amplifiers and cascade lasers to improve their performance. The Raman amplifier bandwidth is broadened by using a broadband pump or by...
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6829408 |
Optical amplifier, optical transmission equipment, optical transmission system, and method thereof
An optical transmission equipment for use in an optical transmission system, having an optical amplifier ( 10 A), comprising: a first optical doped fiber ( 1 A); a second optical doped fiber ( 1...
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6778563 |
Q-switched laser
A microchip laser arrangement is disclosed. The arrangement is operative to emit Q-switched laser pulses at 1.54 μm. The lasing medium of the laser arrangement is preferably comprised of...
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6768751 |
Methods and apparatus for removing heat from a lasing medium of a solid-state laser assembly
An apparatus for removing heat from a lasing medium of a solid-state laser assembly is provided that comprises a working fluid and at least one condensation surface defined by a housing in which at...
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6761713 |
Medical laser unit
The medical laser unit ( 1 ) includes at least one laser body ( 3 ) being made of laser material ( 4 ). A first type of a pump light source ( 11 ) is designed and arranged to continuously excite...
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6748172 |
Multi-channel light source generator in a WDM optical communication system
A multi-channel light source generator has a pumping laser source for generating a pumping laser having a predetermined wavelength, a multi-channel light source generating device for generating...
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6728437 |
Pumping light generator and fiber Raman amplifier
An object of the present invention is to prevent an increase of the degree of polarization of an output pumping light even if one of pumping light sources has a failure. Laser diodes ( 30 a , 30 b...
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RE38489 |
Solid microlaser passively switched by a saturable absorber and its production process
The invention relates to a microlaser cavity ( 10 ) having: a solid active medium ( 2 ) emitting at least in a wavelength range between 1.5 and 1.6 μm, and a saturable absorber ( 4 ) of formula...
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6711185 |
Polarization dependent out-coupling
An optical arrangement for direction dependent coupling out of light comprises a first and a second polarization converter each for converting the state of polarization of light received in a...
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6693941 |
Semiconductor laser apparatus
A semiconductor laser apparatus comprises a pumping beam source and a surface emission type of semiconductor device. The pumping beam source is constituted of a semiconductor laser device, in which...
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6690507 |
Double-pumped raman amplifier
A double pumped Raman amplifier is provided that increases gain over a same length of gain fiber without significantly increasing a percentage of noise. The amplifier may include a source of pump...
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6687046 |
Optical fiber amplifier device and communications system using the optical fiber amplifier device
The invention relates to an optical fiber amplifier device with an optical signal input and output with first piece of amplifying fiber doped with lanthanide in a double-clad structure, a second...
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6661568 |
Diode-pumped laser amplifier
In a diode-pumped laser amplifier the inventive object is to increase the tolerance of the amplifier arrangement relative to variations of the input parameters significantly, so that fine-tuning is...
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6658037 |
Incoherent light-emitting device apparatus for driving vertical laser cavity
A laser emitting apparatus includes an incoherent light-emitting device having a light-emitting layer wherein an electric field is applied across the light-emitting layer to produce light which is...
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6654401 |
Multiple laser source, and systems for use thereof
A chirp signal source includes first and second lasers formed on a solid-state chip or substrate. Each of the lasers has a resonator or cavity which incorporates or includes electrooptic material...
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6628692 |
Solid-state laser device and solid-state laser amplifier provided therewith
A laser crystal is formed on a substrate in a solid-state laser device. The laser crystal oscillates laser beam from a second end face when an excitation beam is projected to a first end face. An...
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6625194 |
Laser beam generation apparatus
A laser beam generation apparatus includes a solid state laser medium having first and second optically polished planes provided opposed with each other to allow a laser beam to be pumped to pass...
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6597493 |
Nonlinear fiber amplifiers used for a 1430-1530nm low-loss window in optical fibers
An apparatus and method are described for exploiting almost the full almost 25 TH % of bandwidth available in the low-loss window in optical fibers (from 1430 nm-1620 nm) using a parallel...
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6580732 |
Multiple mode laser
A laser apparatus is described having multiple modes of operation using intracavity optical switching within a laser resonator. The laser resonator has a solid state gain medium and one or more...
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6532248 |
Diode-laser side-pumped solid-state laser device
A diode-laser side-pumped solid-state laser device (SSLD) has a cylindrical laser rod, a cooling tube, and a cylindrical mirror member having an inner mirror surface and a plurality of openings...
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6512630 |
Miniature laser/amplifier system
Many longitudinally pumped miniature lasers (single-frequency Nd:YAG microchip lasers and Q-switched microchip lasers) are sufficiently short that only a small fraction of the incident pump light...
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6400513 |
Optical beam coupling of multiple wavelengths into an output channel using spatial wavefront segmentation
An apparatus and method for coupling an array of light beams extending predominantly in one direction into an output port. The light beams are rearranged into a desired shape which extends more...
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