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6205162 |
Semiconductor laser device
A semiconductor laser device has a package which contains inside a laser diode which outputs light according to an applied voltage and a protective element. The protective element has a control...
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6205163 |
Single-transverse-mode 1×N multi-mode interferometer type semiconductor laser device
In a semiconductor laser device, a first section including a single-mode waveguide and a second section including N (N=2, 3 . . . ) single-mode waveguides are provided. A third section including a...
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6188707 |
Mounting structure for laser diode bars
A laser diode bar mounting structure includes a dielectric substrate with an overlying conductor, and diode bar spaces through the conductor layer to support laser diode bars within them. The bar...
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6185232 |
Wavelength modulated laser for minimizing effects of Rayleigh backscattering
An optical transmitter (405) includes a distributed feedback semiconductor laser (100) operated in a linear regime below a threshold associated with stimulated Brillouin scattering to generate an...
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6181720 |
Semiconductor laser device and method for manufacturing same
The present invention discloses a semiconductor laser device having: a lead frame; a resin molding provided for sealing a part of said lead frame and including a main body and a flange portion...
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6177292 |
Method for forming GaN semiconductor single crystal substrate and GaN diode with the substrate
Method for forming a single crystal GaN semiconductor substrate and a GaN diode with the substrate is disclosed which forms in a short time period, has a low crystal defect concentration and allows...
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6165739 |
Multiple simultaneous testing media
A stationary testing media device made of a glass or plastic plate and conveniently a microscope slide, wherein multiple simultaneous tests are conducted on a single multifurcated testing sample....
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6167072 |
Modulated cap thin p-clad semiconductor laser
A semiconductor laser structure for use having a laser substructure so constructed and arranged to have an active region in close proximity to the top surface region and separated therefrom by a...
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6157755 |
Laser system
In order to improve a laser system comprising a fiber bundle consisting of single mode fibers which form with a first end a fiber bundle end, at which a total radiation field, which can be imaged...
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6134257 |
Solid state laser for operation in librational modes
A solid state laser comprises a cavity resonator in the form of a generally cylindrical body and, located within the resonator, an active region which generates lasing light when suitably pumped....
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6122304 |
Semiconductor laser and optical pickup with the same
An optical pickup has a semiconductor laser that emits a laser beam to read information recorded on a storage medium. A length of an internal resonator of the semiconductor laser is set so as to...
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6118804 |
Laser amplification system
A laser amplification system with a lasant solid-state material is pumped by pumped light sources and in the case of which one or several pumped beams are guided by mirrors or other optical aids...
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6111277 |
Semiconductor device as well as light emitting semiconductor device
A semiconductor device such as a light emitting semiconductor device comprising a mask layer having opening areas and a selective growing layer comprising a semiconductor grown selectively by way...
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6091747 |
Circuit and method for driving laser diode
A laser diode drive circuit comprising a laser diode; a drive pulse current source for emitting light or not emitting light of the laser diode according to an input signal; and a biasing unit for...
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6088378 |
Ring cavity type surface emitting semiconductor laser and fabrication method thereof
A surface emitting semiconductor laser of a ring cavity type with a small cavity loss includes a ring cavity or resonator which is constructed wituout using at least one of a pair of special...
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6081001 |
Nitride semiconductor light emitting device
A luminous intensity of a semiconductor light emitting device having a multi-layer structure formed of nitride group III-V compound semiconductors is improved by having a thickness d of a light...
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6072816 |
Laser-diode drive circuit
A laser-diode drive circuit which maintains the speed of an optical output power waveform even if the pulsed current waveform of the laser diode changes. The laser diode drive circuit includes a...
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6072815 |
Microlaser submount assembly and associates packaging method
The submount assembly includes a heat sink and a submount mounted upon the heat sink that is formed of a thermally conductive, electrically insulating material so as to transfer heat from the...
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6067308 |
Electroluminescent solid state device
An electroluminescent solid state device includes an active body member that is formed of a single crystalline metal oxide, such as aluminum oxide, that is doped with a rare earth element, such as...
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6058126 |
Laser-diode-pumped solid state laser and radiation image read-out system
In a laser-diode-pumped solid state laser, a solid laser crystal is pumped by a pumping laser beam emitted from a laser diode and a harmonic of light emitted from the pumped solid laser crystal is...
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6044102 |
Laser transmitting or receiving devices and method for optically transmitting information
In a transmission laser feeding an optical fibre to which it is coupled, the method comprises providing a Lippmann effect structure with thin stratifications by injecting into the laser light-guide...
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6038243 |
Multiple beam light source device and multiple beam scanning optical apparatus using the device
A multiple beam light source device includes a plurality of semiconductor laser chips. The plurality of semiconductor laser chips each have respective emission points independent from each other....
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6037189 |
Integrated waveguide device and method of fabricating the integrated waveguide device
A method of fabricating an integrated waveguide device includes forming a ridge having a width that varies in a tapered shape along the [011] direction on a semiconductor substrate and growing a...
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6034980 |
Laser scanning unit module
A laser scanning unit module (30) including one or more laser scanning units (LSUs), a base plate on which the laser scanning units are installed, and a memory device (80) for storing data required...
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6034983 |
Method of fabricating compound semiconductor device and optical semiconductor device
A fabricating method of compound semiconductor device is proposed which has a step of varying selective growth ratio of crystal by changing either a mean free path of material gas in gas atmosphere...
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6031856 |
Method, article of manufacture, and optical package for eliminating tilt angle between a header and an optical emitter mounted thereon
The present invention provides a method, article of manufacture, and optical package (24) for eliminating tilt angle (40) between an optical emitter (26) mounted on a carrier (28). The method,...
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6028878 |
Laser diode array with built-in current and voltage surge protection
Protection from current and voltage spikes is provided for a laser array by attaching a reverse diode laser array to shared contact pads before the first laser array is bonded to those pads. The...
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6026105 |
Technique for measuring semiconductor laser chirp
A technique for characterizing laser chirp utilizes an optical fiber and its inherent interferometric properties. An RF modulating signal is applied to the laser, where the modulated output signal...
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5999552 |
Radiation emitter component
A radiation emitter component, in particular an infrared emitter component with a conventional light-emitting diode housing, includes two electrode connections, one of which has a well-shaped...
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5994154 |
Method of fabricating an optical semiconductor device
There is provided an optical semiconductor device, including a first semiconductor layer, a first insulating layer formed on the first semiconductor layer, the first insulating layer having a...
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5990500 |
Nitride compound semiconductor light emitting element and its manufacturing method
A nitride compound semiconductor light emitting element is made by stacking a metal layer made of one of elements: palladium (Pd), scandium (Sc), vanadium (V), zirconium (Zr), hafnium (Hf),...
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5978396 |
Semiconductor laser source
A semiconductor laser source, including a stack of semiconductor laser diodes each including at least one active region. The active region includes a series of semiconductor layers located between...
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5978404 |
Laser beam emission apparatus
A laser beam emission apparatus that may be used as a universal optical pickup laser light source. The apparatus may be used in various applications including recording/reproduction of data to/from...
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5932896 |
Nitride system semiconductor device with oxygen
The present invention provides a nitride system semiconductor device which decreases cost and improves productivity without heat treatment after the growth and which increases in lifetime and...
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5920585 |
Laser diode package having an optical power monitoring function
A laser diode package having an optical power monitoring function includes a monitor diode for monitoring an optical power of the light emitted from a laser diode. In the laser diode package, an...
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5907569 |
Circuit for controlling the output power of an uncooled laser or light emitting diode
A selected positive coefficient resistor is connected in parallel across a laser, Light Emitting Diode (LED) or amplifier LED (ALED) to adjust the bias current, respectively, to the laser, LED or...
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5907571 |
Semiconductor laser device and method for manufacturing the same
A semiconductor laser device is provided which includes a laser diode chip mounted on a sub-mount, a monitor photo diode incorporated in the sub-mount, for monitoring a laser beam emitted by the...
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5905751 |
Laser modules and methods of manufacturing same
A method of manufacturing a laser module is provided, which includes the steps of providing a one-piece cylindrical housing having a bore, a front window and a rear opening, securing a lens piece...
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5903587 |
Stress compensation type semiconductor laser
A stress compensation type semiconductor laser emitting laser light of 0.98 μm.about.1.02 μm wavelength includes a semiconductor substrate, a cladding layer disposed on the semiconductor...
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5903583 |
Diode laser component with cooling element and diode laser module
A diode laser component has at least one cooling element and at least one laser diode arrangement provided on a mounting surface of the cooling element. The cooling element is produced as a...
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5903584 |
Laser diode package
A surface-mounted flat package for a laser diode has the laser diode and light sensor diode mounted on top of a printed wiring insulating substrate. These diodes are connected to electrodes at the...
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5862166 |
Semiconductor laser with light emitting slant plane and method of manufacturing the same
A semiconductor laser having a stepped substrate of group III-V compound semiconductor exposing upper and lower flat planes and a slant plane coupling the upper and lower flat planes, a lower clad...
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5850409 |
Laser modulation control method and apparatus
Laser modulation control apparatus and methods which provide direct control of the transmitted optical extinction ratio of a semiconductor laser. A relatively low frequency and low amplitude pilot...
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5850410 |
Semiconductor laser and method for fabricating the same
The present invention relates to a semiconductor laser having light emitting wavelengths from blue to UV, more specifically a semiconductor laser which can form a laser resonator by perpendicular...
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5848083 |
Expansion-matched high-thermal-conductivity stress-relieved mounting modules
A mounting module (submount) for a high-power heat-dissipating element comprises a mounting plate thermal-expansion-matched to the element, a high-thermal-conductivity bulk layer having...
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5838701 |
Q-switched solid-state laser
A Q-switched solid-state laser has a narrow-band laser diode (18) whose narrow-band output radiation serves as seed radiation for exciting a solid (14), with the result that only a single...
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5828087 |
AlInAs semiconductor device contaning Si and P
The semiconductor device includes at least an Si-doped AlInAs layer formed on an InP substrate. The Si-doped AlInAs layer contains phosphorus.
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5814838 |
Light emitting semiconductor element with ZN doping
An LED is disclosed which has a laminated semiconductor body with an anode and a cathode formed on a pair of opposite faces thereof. Among the layers of the semiconductor body are an active layer...
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5812578 |
Radiation-emitting index-guided semiconductor diode
A radiation-emitting semiconductor diode, especially a laser having a first and a second cladding layer, an active layer and a mesa which comprises at least the second cladding layer and which lies...
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5812570 |
Laser diode component with heat sink and method of producing a plurality of laser diode components
A laser diode component includes a semiconductor body secured on a heat sink which includes a dissipator and an electrically and thermally conductive connection plate. The semiconductor body is...
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