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7643523 |
Thermally self-correcting gain modules and associated systems and methods
Aspects of the present invention are directed to the use of optical gain structures that include alternating layers of gain medium and transparent heat conductors in which the gain medium itself...
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7639723 |
Tunable laser, optical module, and control method thereof
A tunable laser is provided, including: a multiple ring resonator that is formed by coupling ring resonant elements having different optical path length from each other; an input/output-side...
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7633982 |
Optically pumped surface emitting semiconductor laser device
A surface emitting semiconductor laser device, having at least one monolithically integrated pump radiation source ( 20 ), in which the pump radiation source ( 20 ) has at least one edge emitting...
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7627014 |
Extended wavelength strained layer lasers having nitrogen disposed therein
Several methods are used in novel ways with newly identified and viable parameters to decrease the peak transition energies of the pseudomorphic InGaAs/GaAs heterostructures. These techniques,...
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7590160 |
High-gain diode-pumped laser amplifier
A laser amplifier includes a laser active slab with a source of pump power to amplify an input laser beam, the laser active slab including a block of laser active material having opposed lateral...
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7583717 |
Laser system
A laser discharge, where the laser discharge can be formed by electrodes and at least one sidewall in a manner allowing a more compact structure than previously provided. Protrusions in the...
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7573930 |
Anamorphotic solid-sate laser
A laser system, which is used in material processing to produce a radiation line of small width and uniform high intensity in the longitudinal direction, produces radiation that has different mode...
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7545840 |
Laser element and method for manufacturing the same
It is an object of the present invention to provide a method that can provide regions having different thicknesses of a laminated body containing an organic compound with a light-emitting property...
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7542497 |
AlGaInN-based lasers with dovetailed ridge
A process for fabricating lasers capable of emitting blue light wherein a GaN wafer is etched to form laser waveguides and mirrors using a temperature of over 500° C. and an ion beam in excess of...
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7532656 |
All-silicon raman amplifiers and lasers based on micro ring resonators
Devices for generating a laser beam are disclosed. The devices include a silicon micro ring having at least one silicon optical waveguide disposed at a distance from the micro ring. The radius and...
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7522647 |
Semiconductor laser and method of fabricating the same
An intrinsic GaAs waveguide layer is formed on a p-type AlGaAs cladding layer, a quantum dot active layer is formed further thereon. An n-type AlGaAs cladding layer is formed on the center portion...
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7515625 |
Multipath laser apparatus using a solid-state slab laser rod
A laser apparatus has a multipath solid-state slab laser rod and an excitation source that excites it, and uses a solid-state slab laser rod that has a trapezoid or parallelogram-shaped cross...
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7505499 |
Slab laser amplifier with parasitic oscillation suppression
A slab laser amplifier with parasitic oscillation suppression has a plurality of angled pump faces related to one another in order to decrease likelihood of parasitic oscillations, with internal...
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7496125 |
Composite laser rod, fabricating method thereof, and laser device therewith
As a composite laser rod capable of satisfying the positional stability and output stability of a laser beam, a laser rod in which a laser active element is doped is intimately inserted into a...
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7492805 |
Scalable spherical laser
A spherical laser includes a transparent or semi-transparent outer spherical vessel having an internal cavity, an amplifying medium in the cavity, and means to excite the amplifying medium. The...
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7440480 |
Tetravalent chromium doped laser materials and NIR tunable lasers
A method is described to improve and produce purer Cr 4+ -doped laser materials and lasers with reduced co-incorporation of chromium in any other valence states, such as Cr 3+ , Cr 2+ , Cr 5+ , and...
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7430230 |
Tube solid-state laser
An improved tube solid-state laser (SSL) is provided utilizing diode pumping, microchannel cooling, optics, and/or new coating and bonding processes. In one example, an amplifier module for the SSL...
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7388895 |
Corner-pumping method and gain module for high power slab laser
Corner pumping method and gain module for high power slab laser are disclosed. In one embodiment, said method comprises directing a pump light from one or more pump light sources each consisting of...
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7382818 |
Diffusion bonded pump cavity
A solid state pump cavity comprising a laser rod encased by diffusion bonding inside an outer cladding. The outer cladding provides the ability to efficiently conduct heat away from the laser rod....
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7382817 |
V-coupled-cavity semiconductor laser
A semiconductor laser comprises two optical cavities, each comprising an optical waveguide bounded by two partially reflecting elements. The two optical waveguides are disposed on a substrate to...
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7366217 |
Optimizing mirror reflectivity for reducing spontaneous emissions in photodiodes
An optical structure that reduces the effects of spontaneous emissions from the active region of a laser. An optical structure includes optimizations to reduce the effects of spontaneous emissions....
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7359416 |
Optical semiconductor device
An optical semiconductor device includes a semiconductor laser chip, a base for mounting the semiconductor laser chip and a solder layer sandwiched between the top surface of the base and the...
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RE40019 |
High power high efficiency cladding pumping fiber laser
In the present invention, methods and apparatus for making efficient cladding pumping fiber lasers is disclosed. In particular, new fiber cladding geometry and new method of coupling pumping laser...
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7319710 |
Microdisk laser with unidirectional generation property
The present invention relates to a microdisk laser with a unidirectional generation property, and more particularly, to a microdisk laser designed in the form of a triangle, wherein the incident...
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7260127 |
Dual layer color-center patterned light source
A thin layer of ionic crystal is grown on a substrate. The crystal could be any type of ionic crystal, such as sodium chloride or potassium chloride. The crystal is a pure form of the chosen...
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7224875 |
Semiconductor optical device integrated with a photo detector
The present invention provides a semiconductor optical device 1 that includes a photodiode capable of monitoring front light of the light-emitting device. The optical device 1 includes a...
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7200160 |
Laser beam source with a laser element containing a thin crystal disk as a laser-active medium
A laser beam source has a laser element provided with a thin crystal disk as a laser active medium. The laser beam source has improved mechanical stability and improved thermal contact with respect...
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7193771 |
Power scalable optical systems for generating, transporting, and delivering high power, high quality laser beams
Power scalable, rectangular, multi-mode, self-imaging, waveguide technologies are used with various combination of large aperture configurations, 20, 50, 80, 322, 324, 326, 328, 330, 332, 334,...
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7190861 |
Monolithic semiconductor light source with spectral controllability
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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7123634 |
Zig-zag laser amplifier with polarization controlled reflectors
A solid state zig-zag slab laser amplifier in which depolarization occurring at total internal reflection from opposed lateral faces of the amplifier slab is controlled by selecting a complex...
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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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7092425 |
VCSEL device with improved modal properties
Using lateral physical modulation, the optical properties of VCSELs can be stabilized and controlled by spatially varying the characteristics of the device material. This results in stabilization...
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7068905 |
Extended optical bandwidth semiconductor source
An optical bandwidth source for generating amplified spontaneous emission (ASE) across a selected wavelength range, the optical bandwidth source including a waveguide having a first end and a...
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7022260 |
Fluorescent member, and illumination device and display device including the same
A fluorescent member includes a plurality of particles dispersed in a medium. Each particle includes a core and a coating layer covering the core. The core is formed of a semiconductor which...
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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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6983001 |
Laser with heat transfer system
A laser includes a deformable tube holding an electrode assembly that includes conformable spacers. The spacers are deformed by compression of the tube into good surface contact with the electrodes...
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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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6931033 |
Pump source for lasers
This invention relates to the field of lasers and in particular to the pump sources used in lasers. Many existing lasers use linear flashlamps in order to create population inversion in the gain...
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6891877 |
Module of a solid-state platelet light-pumped laser
The inventive module of a light-pumped laser comprises light pump sources, a solid-state active element which is embodied in the form of a plate and provided with a couple of first opposite side...
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6865213 |
Diode-pumped solid-state laser in a polyhedronal geometry
A solid-state laser device consists of a gain medium in the shape of a polyhedron. A beam enters the gain medium at one surface of the polyhedron and is reflected internally at one or more surfaces...
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6847673 |
Solid state laser disk amplifer architecture: the normal-incidence stack
Normal incidence stack architecture coupled with the development of diode array pumping enables the power/energy per disk to be increased, a reduction in beam distortions by orders of magnitude, a...
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6822994 |
Solid-state laser using ytterbium-YAG composite medium
A laser device employs a laser slab having an ionic layer and a nonionic layer, joined through an optical-quality interface. The laser slab has a trapezoidal cross-section in a direction...
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6810060 |
High-average power active mirror solid-state laser with multiple subapertures
An apparatus and method for achieving ultrahigh-power output from a solid-state laser. The solid-state laser of the subject invention uses multiple disk-shaped laser gain media (subapertures)...
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6807216 |
Circular laser
A novel laser apparatus is disclosed which pertains to laser resonator geometries possessing circular symmetry, such as in the case of disk or spherical lasers. The disclosed invention utilizes...
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6788723 |
Resonator array for solid-state lasers
A stable resonator for solid-state lasers which exhibit a thermally induced lensing effect, includes a laser rod, a rear mirror and a semi-reflecting output mirror. The invention is characterized...
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6785304 |
Waveguide device with mode control and pump light confinement and method of using same
A waveguide device in the form of either a solid-state laser or amplifier is divided into separate pumping and output mode control sections along at least one direction of the device by leaving a...
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6707838 |
Stray light cutting structure for optical device
A stray light cutting structure for an optical device provided with an optical component through which a predetermined light beam travels in parallel to the optical axis of the optical device is...
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6700913 |
Low cost high integrity diode laser array
A semiconductor laser diode array including a plurality of laser diode bars, each carried by a submount and forming a subassembly. Each subassembly is separated by a flexible or compliant...
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6693922 |
Reeder rod
The inventive rod includes a gain medium having first and second equal length portions sharing a common optical axis and an optical rotator disposed between said first and second portions which...
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6683892 |
Laser device, method of producing the same and composite optical medium for use in producing the same
In a longitudinal flexible composite optical medium ( 3 ) for use in a laser device, the longitudinal flexible composite optical medium includes a laser beam guide portion ( 1 ) containing a laser...
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