|
Match
|
Document |
Document Title |
|
|
7636379 |
Pumping system for a laser source and laser source comprising such a pumping system
A pumping system for a laser source includes a pump diode that emits a pump beam having a central wavelength that varies with temperature. A selective mirror having a plurality of spectral...
|
|
|
7633984 |
Optical semiconductor device and driving method thereof
Objects are achieved by an optical semiconductor device comprising: a structure 61 including a substrate 50 , a diffraction grating 52 a , an active layer 54 and a refractive index control...
|
|
|
7633985 |
Apparatus and methods for altering a characteristic of light-emitting device
Apparatus and methods for altering one or more spectral, spatial, or temporal characteristics of a light-emitting device are disclosed. Generally, such apparatus may include a volume Bragg grating...
|
|
|
7633986 |
Distributed feedback laser diode
A distributed feedback laser diode comprises a phase-shifting portion in diffraction gratings. The magnitude of a phase shift in the phase-shifting portion is 8Λ/40 to 9Λ/40, Λ representing...
|
|
|
7633988 |
Tunable laser source with monolithically integrated interferometric optical modulator
A monolithically-integrated semiconductor optical transmitter that can index tune to any transmission wavelength in a given range, wherein the range is larger than that achievable by the maximum...
|
|
|
7627011 |
Distributed feedback laser diode and a method for manufacturing the same
The present invention is to provide a DFB-LD with a larger coupling efficiency between the grating and the active layer. The DFB-LD of the invention provides an n-type InP substrate, an n-type InP...
|
|
|
7627012 |
Distributed feedback semiconductor laser including wavelength monitoring section
In general, a complex-coupled distributed feedback (DFB) semiconductor laser includes a grating formed by grooves through at least a part of an active region of a laser cavity. The complex-coupled...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
7616667 |
Broadband fiber laser
A broadband fiber laser provides a lasing cavity including a reflective mirror and at least one fiber Bragg grating for further providing a lasing signal to resonate and be amplified therein....
|
|
|
7613217 |
Semiconductor surface emitting device
This surface emitting semiconductor device 1 comprises a first conductivity type semiconductor region, an active layer, a second conductivity type semiconductor layer and current block...
|
|
|
7613215 |
High efficiency second harmonic generation vertical external cavity surface emitting laser
A vertical external cavity surface emitting laser (VECSEL) in which the full-width at half maximum (FWHM) of laser light is reduced by two etalon filter layers to improve the efficiency of second...
|
|
|
7609746 |
Light source device, image display device, projector, illumination device, and monitor device
A light source device generates irradiation light that is irradiated onto a predetermined face, the light source device including: a laser light source that emits laser light; a diffractive optical...
|
|
|
7609919 |
Coupling-enhanced surface etched gratings
The invention describes the method and apparatus for enhancement of coupling efficiency in effective-ridge laterally-coupled surface-etched grating waveguide structures, where a slab waveguide has...
|
|
|
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...
|
|
|
7593445 |
Semiconductor optical device and optical transmission module
A semiconductor optical device has a semiconductor laser portion and a modulator portion which have different mesa structures. The mesa structure of the semiconductor laser portion is a ridge...
|
|
|
7593446 |
Single-mode distributed feedback semiconductor lasers
The present invention relates to the field of distributed feedback semiconductor lasers. More specifically, the invention makes it possible to develop single-mode distributed feedback lasers with a...
|
|
|
7590162 |
Chirped bragg grating elements
Apparatus and methods for altering one or more spectral, spatial, or temporal characteristics of a light-emitting device are disclosed. Generally, such apparatus may include a volume Bragg grating...
|
|
|
7590159 |
Surface-emission laser diode operable in the wavelength band of 1.1-1.7 micrometers and optical telecommunication system using such a laser diode
A surface-emission laser diode includes a distributed Bragg reflector tuned to wavelength of 1.1 μm or longer, wherein the distributed Bragg reflector includes an alternate repetition of a...
|
|
|
7586962 |
Integrated diamond carrier for laser bar arrays
A mounting improvement for the solid state laser bars used for example to pump high power lasers is provided. Solid state laser bars are mounted in side by side relationship and combined with...
|
|
|
7583719 |
Complex-coupled distributed feedback semiconductor laser
A distributed feedback semiconductor laser may have (1) a controlled complex-coupling coefficient which is not affected by grating etching depth variation, and (2) facet power asymmetry with no...
|
|
|
7583712 |
Optoelectronic device and method of making same
A light emitting device is disclosed that emits light from the surface in a broad spectral range and in a broad range of angles tilted with respect to the direction normal to the exit surface. An...
|
|
|
7583714 |
Vertical cavity surface emitting semiconductor laser device
The relationship between the reflectivity characteristic of a DBR layer(s), in which an InP layer and an InGaAlAs layer are laminated alternatively, and the optical absorption characteristic of the...
|
|
|
7573928 |
Semiconductor distributed feedback (DFB) laser array with integrated attenuator
A semiconductor laser with an integrated attenuator on the same chip as the laser. In some embodiments the attenuator is formed of the same material as the laser, but without a grating in the...
|
|
|
7570681 |
Multisectional laser
Disclosed is a semiconductor laser ( 10 ) in which the substrate ( 11 ) comprises at least three independent functional sections ( 17, 20, 23 ) in the direction of light wave propagation (A), said...
|
|
|
7567606 |
Strong distributed feedback semiconductor laser
The present invention relates to a strong distributed feedback semiconductor laser. More specifically, the invention implements a top optical waveguide ( 2 ) for semiconductor lasers having a...
|
|
|
7567595 |
Laser source with interdigital heater electrodes and underlying current confinement layer
A semiconductor laser source is provided wherein the wavelength selective section of the laser diode comprises a P+ type current confinement layer and first and second sets of interdigital heater...
|
|
|
7564889 |
Adiabatically frequency modulated source
A Distributed Feed-Back (DFB) laser integrated with an Electroabsorption (EA) modulator whose facet at the end of EA modulator section has finite reflectively to create adiabatic chirp by optical...
|
|
|
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...
|
|
|
7545844 |
Use of Bragg grating elements for the conditioning of laser emission characteristics
Apparatus and methods for altering one or more spectral, spatial, or temporal characteristics of a light-emitting device are disclosed. Generally, such apparatus may include a volume Bragg grating...
|
|
|
7535944 |
Photonic crystal/waveguide coupler for VCSELS and photodetectors
An optical coupler comprises first and second mirrors. The first mirror is positioned with respect to the second mirror so that a resonant cavity is defined between them. A waveguide structure is...
|
|
|
7535934 |
Optical continuum source including light generation beyond wavelength edges of continuum
An optical continuum source is formed that is used to generate both a continuum and one or more light peaks outside the bandwidth of the continuum. In particular, one or more fiber Bragg gratings...
|
|
|
7515623 |
Surface emitting semiconductor laser, its manufacturing method, and manufacturing method of electron device
A surface emitting semiconductor laser which can perform laser oscillation in a single peak beam like that in a single lateral mode and a manufacturing method which can easily manufacture such a...
|
|
|
7512160 |
Control method of distributed Bragg reflection semiconductor laser, and image projecting apparatus
A DBR semiconductor laser is controlled in an image projecting apparatus, which includes the DBR laser having a phase and DBR region, a light wavelength converting device for converting...
|
|
|
7508047 |
Vertical cavity surface emitting laser with integrated electrostatic discharge protection
An electrostatic discharge (ESD) protected semiconductor device. The semiconductor device is formed as a monolithic structure. The monolithic structure includes a vertical cavity surface emitting...
|
|
|
7508976 |
Local process variation correction for overlay measurement
A diffraction based overlay metrology system produces the overlay error independent of effects caused by local process variations. Generally, overlay patterns include process variations that...
|
|
|
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...
|
|
|
7505501 |
Optoelectronic package
An optoelectronic package having passive optical components that are configured to reduce the amount of optical back reflection that reaches an optoelectronic device housed within the...
|
|
|
7502402 |
Integrated optical semiconductor device
A semiconductor laser device includes a semiconductor laser portion, a window layer structure portion, a first inter-element portion, and a pre-placed optical element portion on an InP substrate....
|
|
|
7502080 |
Liquid crystal display and manufacturing method thereof
A liquid crystal display includes a liquid crystal panel assembly with a plurality of pixels, a printed circuit board disposed under the liquid crystal panel assembly, and a plurality of laser...
|
|
|
7502403 |
Semiconductor laser and optical module
In a horizontal cavity surface emitted laser, there is provided a device structure that is capable of obtaining a circular narrow-divergence emitted beam that is high in the optical coupling...
|
|
|
7496127 |
Optical device coupling light propagating in optical waveguide with diffraction grating
An optical waveguide propagates a laser beam. Main diffraction grating and sub-diffraction grating couple light propagating in the optical waveguide. The main diffraction grating and the...
|
|
|
7492803 |
Fiber-coupled single photon source
A device comprising a single photon generator and a waveguide, wherein a single photon generated by the single photon generator is coupled to the waveguide.
|
|
|
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...
|
|
|
7486713 |
Surface-emitting type semiconductor laser and method for manufacturing the same
A surface-emitting type semiconductor laser includes a substrate; a first mirror disposed above the substrate; an active layer disposed above the first mirror; a second mirror disposed above the...
|
|
|
7483465 |
Near field optical apparatus
A near field optical apparatus comprising a conductive sheet or plane having an aperture therein with the conductive plane including at least one protrusion which extends into the aperture. The...
|
|
|
7483466 |
Vertical cavity surface emitting laser device
A vertical cavity surface emitting laser device includes a first reflective mirror layer, a second reflective mirror layer, and an active layer disposed therebetween, wherein at least one of the...
|
|
|
7474683 |
Distributed feedback semiconductor laser
A distributed feedback semiconductor laser comprises a first cladding layer, a first optical guide layer, an active layer, a second optical guide layer, an InP semiconductor layer, an InGaAsP...
|
|
|
7474684 |
Optical semiconductor element and optical semiconductor device
An optical semiconductor device includes an optical semiconductor element, a metal pattern and at least one thermal conductive material. The optical semiconductor element has a first optical...
|