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8160114 |
Single longitudinal mode laser diode
A single-mode, etched facet distributed Bragg reflector laser includes an AlGaInAs/InP laser cavity, a front mirror stack with multiple Fabry-Perot elements, a rear DBR reflector, and a rear...
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8139616 |
Pulsed light generator and pulsed fiber laser
A pulsed light generator of the invention includes: an excitation light source; a fiber grating into which excitation light from the excitation light source enters; a rare-earth doped optical fiber...
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8130800 |
Mode-locked solid state lasers using diode laser excitation
A mode-locked laser employs a coupled-polarization scheme for efficient longitudinal pumping by reshaped laser diode bars. One or more dielectric polarizers are configured to reflect a pumping...
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8126023 |
Laser output switching by transverse mode modulation
A pulsed laser for machining, has a mode switch, e.g. Q-switch device (15, 30, 40), in a resonant optical cavity (20) capable of supporting a given lasing mode, e.g. a transverse mode of...
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8111722 |
Low-noise RF oscillation and optical comb generation based on nonlinear optical resonator
Techniques and devices based on optical resonators made of nonlinear optical materials and nonlinear wave mixing to generate RF or microwave oscillations and optical comb signals.
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8085821 |
Light-enhancing device and method based on use of an optically active lasing medium in combination with digital planar holography
The light-enhancing system of the invention comprises a laser diode in which a fully reflecting mirror and/or a partially reflecting mirror of the laser diode is made in the form of digital planar...
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8081667 |
Single-mode high power multimode fiber laser system
A high power single mode fiber laser system is configured with an active fiber including coextending multimode core (MM) and cladding around the MM core. The MM core is doped with one or more ions...
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8023548 |
Diode lasers type of devices with good coupling between field distribution and gain
Diode lasers type of devices with good coupling between field distribution and gain are disclosed. A single element has a flat field distribution that couples with the uniform current injection in...
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7995625 |
Resonator of hybrid laser diode
Provided is a resonator of a hybrid laser diode. The resonator includes: a substrate including a semiconductor layer where a hybrid waveguide, a multi-mode waveguide, and a single mode waveguide...
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7983312 |
Method and apparatus for generation and amplification of light in a semi-guiding high aspect ratio core fiber
A planar laser gain medium and laser system. The novel laser gain medium includes an active core having a high aspect ratio cross-section with a fast-axis dimension and a slow-axis dimension,...
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7949021 |
Light source apparatus
The present invention relates to a light source apparatus having a structure to enable a short pulse optical output with high pulse energy or a high pulse peak equivalent to that of a Q switch...
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7944957 |
Surface emitting semiconductor laser, method for fabricating surface emitting semiconductor laser, module, light source apparatus, data processing apparatus, light sending apparatus, optical spatial transmission apparatus, and optical spatial transmission system
A surface emitting semiconductor laser includes a substrate, a lower reflective mirror formed on the substrate, an active layer formed on the lower reflective mirror, an upper reflective mirror...
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7929582 |
Systems and methods for generating a tunable laser beam
Systems and methods of generating a tunable laser beam are disclosed. An example method includes: generating coherent optical beams from a plurality of semiconductor optical amplifiers (SOAs);...
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7839908 |
Mode control waveguide laser device
Provided is a device capable of oscillating a plurality of oscillation modes within a laser medium for obtaining a fundamental wave output which is easy in output scaling and high in luminance,...
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7822081 |
Resonator
This invention relates to a wavelength tunable light source, comprising a main resonator, having a first and a second mirrored end, defining an effective cavity length, i.e. an optical beam path...
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7822084 |
Method and apparatus for stabilizing and tuning the bandwidth of laser light
According to aspects of an embodiment of the disclosed subject matter, method and apparatus are disclose that may comprise adjusting a differential timing between gas discharges in the seed laser...
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7796656 |
Enhanced efficiency laterally-coupled distributed feedback laser
The invention describes the method and apparatus for enhanced efficiency in a laterally-coupled distributed feedback (LC-DFB) laser. In a device featuring the effective ridge design, lateral...
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7796672 |
Light source device and projector including light source device
A light source device includes: a laser light source emitting a laser beam of a prescribed wavelength; a nonlinear optical element, disposed facing a light emergence surface of the laser light...
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7778289 |
Optically pumped surface-emitting semiconductor laser and optical projection apparatus having a semiconductor laser such as this
An optically pumped, surface-emitting semiconductor laser having a mode-selective apparatus (7) which is intended for suppression of predeterminable, higher resonator modes of the semiconductor...
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7769071 |
Silica sol gel micro-laser on a substrate
Silica sol gel micro-lasers and methods of fabricating micro-lasers on a chip or a wafer. A silica sol gel micro-laser includes a silica sol gel optical micro-cavity, a substrate, and a support...
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RE41438 |
Fiber amplifier with one single mode core having modified gain spectrum
Disclosed is a fiber amplifier system including a gain fiber having a single-mode core containing dopant ions capable of producing stimulated emission of light at wavelength λs when pumped with ...
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7742509 |
Single-longitudinal mode laser with orthogonal-polarization traveling-wave mode
A single longitudinal-mode laser includes a first mirror and a second mirror that define a laser cavity therein that does not include a linear polarizer. A birefringent gain medium can generate a...
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7711016 |
Semiconductor laser with side mode suppression
Systems and methods for stripping an optical mode from a semiconductor laser. A waveguide layer with multiple layers is included in the semiconductor laser and is typically arranged beneath the...
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7675958 |
Intra-cavity non-degenerate laguerre mode generator
A lasing method including the steps of providing a laser resonator; utilizing birefringence compensation in said resonator whereby said resonator is induced to operate in a Laguerre-Gaussian higher...
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7649915 |
Pulsed laser sources
Various embodiments include modelocked fiber laser resonators that may be coupled with optical amplifiers. An isolator may separate the laser resonator from the amplifier, although certain...
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7646797 |
Use of current channeling in multiple node laser systems and methods thereof
Current channels, blocking areas, or strips in a semiconductor laser are used to channel injected current into the antinodal region of the optical standing wave present in the optical cavity, while...
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7623555 |
High power semiconductor laser diode
Semiconductor laser diodes, particularly high power ridge waveguide laser diodes, are often used in opto-electronics as so-called pump laser diodes for fiber amplifiers in optical communication...
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7620089 |
Surface-emitting type semiconductor laser
A surface-emitting type semiconductor laser includes: a lower mirror; an active layer formed above the lower mirror; and an upper mirror formed above the active layer, wherein the upper mirror...
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7602831 |
Semiconductor laser device having an insulation region
A semiconductor laser device includes a substrate having a first surface and a second surface opposite to the first surface, an active region formed on the second surface of the substrate, a...
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7574026 |
Method for the 3d modeling of a tubular structure
The invention provides a method for 3D modeling of a three-dimensional tubular structure of an examination object from 2D projection images (D) of the structure taken from different projection...
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7555023 |
Quasi-synchronously pumped lasers for self-starting pulse generation and widely tunable systems
A laser system for generating self-starting few cycle laser pulses or widely tunable laser pulses is provided. The laser system includes a modelocked pump source that provides a pulsed pump signal....
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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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7542489 |
Injection seeding employing continuous wavelength sweeping for master-slave resonance
A method for effective injection seeding is based on continuous wavelength sweeping for matching the injected seeds with one or more longitudinal mode(s) of the slave oscillator in every pump...
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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 λ1, λ2 with a mutually identical repetition frequency, an optical amplification section for amplifying and o...
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7526004 |
Mode-locked laser apparatus
A mode-locked laser apparatus includes a resonator (laser cavity), a mode-locking device placed in the resonator, a solid-stated laser medium that is doped with Yb (ytterbium) and placed in the...
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7519091 |
All-optical 2R regenerator using self-seeded laser diode
The present invention is a self-seeded laser diode. The laser diode obtains a gain by itself without using expansive erbium-doped fiber amplifiers. Hence, the cost is reduced and the system is...
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7519092 |
Tunable laser source with optical wavelength addressing
An optical apparatus including a tunable master laser from which all or some of a beam is injected into at least one “slave ” laser having a cavity with an amplifier medium and a dynamic hol...
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7483470 |
Semiconductor laser capable of coupling with single mode optical fiber at high coupling efficiency
A semiconductor laser includes a substrate made of InP, an active layer including a multiquantum well structure, which is formed in a width of 7 to 14 μm on the substrate, and an n-type cladding ...
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7480316 |
Geodesic device comprising a laser source
A laser source is used in a geodesic device to improve the emission of laser light, in which the laser diodes emitting multimodal radiation are influenced by a mode-selective component such that...
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7443891 |
Widely tunable laser
A Fabry-Perot laser and a micro-actuator are utilized to provide continuous tuning over a range of wavelengths.
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7426222 |
Laser apparatus
A laser apparatus is disclosed. An optical element receives at least a part of laser light emitted from a laser generation source and generates interference fringes. Each of first and second...
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7418205 |
Method and apparatus for controlling a frequency hopping laser
An optical spread spectrum communication system includes a tunable laser which sequentially outputs optical signals having different wavelengths. The laser produces a frequency spectrum having a...
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7382808 |
Apparatus and method for spatial mode selection of planar waveguide and thin slab lasers in the large cross section size direction
A method and apparatus for spatial mode selection of planar waveguide and thin slab lasers in the laser's large cross section size direction. The planar laser has a small cross section size...
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7362784 |
Laser irradiation method, laser irradiation apparatus, and semiconductor device
An object of the present invention is obtaining a semiconductor film with uniform characteristics by improving irradiation variations of the semiconductor film. The irradiation variations are...
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7286578 |
High-power diode laser system
A diode laser system having a diode amplifier member with a large transverse gain area. The diode amplifier member includes an amplifying medium for amplifying a number of spatial modes of a...
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7266135 |
Method for producing laser with resonant reflector
In one exemplary embodiment of the invention, a method is employed that is directed to forming a resonant reflector on an optoelectronic device, such as a semiconductor laser for example. The...
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7260122 |
Modeless wavelength-agile laser
An external cavity laser may be swept rapidly in frequency and cavity length to prevent formation of modes providing improved spectral response and light characteristics.
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7188033 |
Method and system of computing and rendering the nature of the chemical bond of hydrogen-type molecules and molecular ions
Provided is a system of computing and rendering a nature of a chemical bond based on physical, Maxwellian solutions of charge, mass, and current density functions of hydrogen-type molecules and...
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7177330 |
Method and apparatus for controlling the polarization of an optical signal
A method of controlling the state of polarization of an optical signal includes injecting the optical signal into a laser diode and matching the wavelength of the optical signal to a longitudinal...
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7167312 |
Beam shaping optics and module for a diode laser arrangement
A beam shaping optical arrangement combines three incoming laser beams that are mutually laterally offset in two orthogonal directions (X and Y), including an incoming first central laser beam and...
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