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7618201 |
Optical module
An optical-waveguide device mounted on a fixing member having a pair of opposing upright walls and a sub-mount unit including a metallic sub-mount of a rectangular solid shape inserted between the...
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7613400 |
Multi-level optical data communication circuit
A driver circuit is coupled to an optical waveguide transmitter. The driver circuit has a current generator that is in series with the transmitter, and a current robbing circuit is coupled to the...
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7609732 |
Method for controlling a temperature of a thermo-electric cooler and a temperature controller using the same
The present invention is to provide a control algorithm of a thermo-electric cooler (TEC) for a laser diode (LD) where a rush current accompanied with the stepwise change of the target temperature...
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7606275 |
Semiconductor laser device having incomplete bonding region and electronic equipment
There is provided a semiconductor laser device capable of reducing stress occurring to a semiconductor laser element so that a life of the semiconductor laser device can be prolonged. In this...
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7606273 |
Wavelength and intensity stabilized laser diode and application of same to pumping solid-state lasers
An efficient and low-noise solid-state laser is optically pumped by one or more laser diode(s) driven by RF modulated current. The solid-state laser operation is stabilized by the pump source...
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7602826 |
Semiconductor laser module, semiconductor laser, and method of assembling the same
The present invention aims to provide a miniaturized optical laser module that eliminates shift in contacting surfaces when contacting and fixing with adhesive two element carriers respectively...
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7599415 |
Light source device, lighting device, monitor device, and projector
A light source device includes a light source section for supplying a laser beam, a wavelength conversion element for converting a wavelength of the laser beam from the light source section, a...
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7599414 |
Laser device
A laser apparatus ( 100 ) has a semiconductor laser device ( 12 a to 12 c ), coolant jetting means ( 24 ), and a heatsink ( 18 a to 18 c ). The semiconductor laser device has a light output...
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7593644 |
Synchronization of lasers and RF sources using timing information transfer in the optical domain
A RF-synchronization system includes a laser that creates pulse trains for synchronization. A modulation means transfers the timing information of the pulse train into an amplitude modulation of an...
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7593447 |
Rotary disk laser module
A rotary disk module, having a rotary disk is interposed between a pair of heat sinks each spaced from the rotary disk by a gap. A motor is installed for driving the rotary disk to rotate. The gaps...
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7586964 |
Laser package and laser module
A laser package has at least one laser device and a hermetically sealed package including a package base and a cap having a light transmissive window for emitting light. The at least one laser...
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7586963 |
Modular diode laser assembly
An extremely versatile diode laser assembly is provided, the assembly comprised of a plurality of diode laser subassemblies mounted to a stepped cooling block. The stepped cooling block allows the...
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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...
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7580433 |
Laser system
A laser system includes a laser diode that oscillates in a multi-mode and has characteristics in which its oscillation wavelength varies with temperature, a grating that receives a light beam...
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7573929 |
Vertical-cavity surface-emitting laser diode device
A vertical-cavity surface-emitting laser diode (VCSEL) device, including a laser element portion formed on a substrate, the laser element portion comprising a multi-layer reflective mirror of a...
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7573924 |
Nitride semiconductor laser device
A nitride semiconductor laser device includes a nitride semiconductor laser element having a resonator end surface and capable of emitting light with a wavelength of at most 420 nm, a heat sink...
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7567602 |
Optical pickup device, semiconductor laser device and housing usable for the optical pickup device, and method of manufacturing semiconductor laser device
A semiconductor laser device includes a first lead having a plate-like mounting portion on which a semiconductor laser chip is mounted and a lead portion extending from the mounting portion, a...
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7567599 |
Semiconductor laser diode device with thermal conductive encapsulating resin and method for manufacturing the same
A semiconductor laser diode device comprises a semiconductor laser diode, a primary lead having a sub-mount for mounting the semiconductor laser diode, at least one secondary lead electrically...
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7567598 |
Semiconductor laser equipment
This invention relates to a semiconductor laser apparatus having a structure to prevent corrosion in a refrigerant flow path of a heat sink and cool stably a semiconductor laser array over a long...
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7567597 |
Semiconductor device with a cooling element
A semiconductor device comprising a semiconductor component, particularly a power laser diode bar, disposed on a cooling element, wherein the cooling element contains in its interior a cooling...
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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...
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7564881 |
Optical transmission module with digital adjustment and the adjusting method
The invention discloses an optical transmission module with digital adjustment and method thereof. The module includes a laser ( 21 ), a laser driver ( 22 ), an automatic power adjustment circuit (...
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7561806 |
Method and system for keeping timing alignment between driving signals in optical double modulation
A method and system is disclosed for making timing alignment for a data transmission system, the method comprising providing a reference clock signal with a first frequency to a multiplexer through...
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7561805 |
Optical transmitter, optical receiver, optical communication system, and optical transmitter and receiver
An optical transmitter has a case. The case houses a laser beam generator, a lens, a cooler, and a high heat conductivity member. The lens concentrates the laser beam generated by the laser beam...
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7555226 |
Automatic bias control for an optical modulator
An automatic bias controller for an optical modulator is provided. The automatic bias controller comprises a driver for providing an electrical data signal to the modulator and a bias voltage...
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7551656 |
Low stress optics mount using thermally conductive liquid metal or gel
An optical assembly with mounting provided to effectively transfer heat away from an optic, such as a slab or waveguide amplifier or laser disk, while limiting internal stresses. The assembly...
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7548569 |
High-power optically end-pumped external-cavity semiconductor laser
A high-power optically end-pumped external-cavity semiconductor laser is provided having a laser chip including an active layer and a distributed Bragg reflector (DBR) for emitting light of a...
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7548568 |
Portable laser device
A hand-held laser device includes a casing formed with a substantially hollow interior space and having a laser emitter thereinside. The laser emitter is formed with an exciting lamp and a laser...
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7548567 |
Analog transmitter using an external cavity laser (ECL)
The present invention relates to an analog transmitter using an external cavity laser (ECL) in which specific characteristics of the ECL are enhanced and exploited to improve 2nd and 3rd order...
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7542495 |
Corrosion resistant cooled acousto-optic devices
A corrosion resistant fluid cooled acousto-optic (AO) device includes an AO interaction medium and a piezoelectric transducer affixed to the AO medium. A cooling arrangement is thermally coupled to...
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7542494 |
Device with a radiation-emitting semiconductor component and procedure for the temperature stabilization of a radiation-emitting semiconductor component
A device having at least one radiation-emitting semiconductor component ( 1 ), the semiconductor component being assigned at least one electrical heating element ( 2 ) designed for heating the...
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7542493 |
Temperature compensated lasers
A novel approach for providing temperature compensation for semiconductor lasers is disclosed. This approach utilizes reflectivity characteristics in the at least one of the mirrors of the...
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7539423 |
Loss of signal detection and programmable behavior after error detection
A method for a fiber optic device to conserve power includes turning off components in the fiber optic device and turning them back on when a detection signal is at a specified level. A method for...
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7535940 |
Optical transmitter
The present invention provides an optical transmitter that prevent the overshoot and undershoot appeared in the emission wavelength caused by the fluctuation of the temperature of the laser diode...
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7532652 |
Laser thermal management systems and methods
A laser system thermal management system includes a laser gain assembly and a thermal management assembly. The laser gain assembly includes a laser gain medium and may include laser pump diodes....
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7526009 |
End-pumped vertical external cavity surface emitting laser
There is provided an end-pumped vertical external cavity surface emitting laser (VECSEL) in which a pump laser beam is incident on a laser chip at a right angle. In the external cavity surface...
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7522845 |
WDM laser wavelength control
A transmitter ( 11 ) emits a single wavelength optical signal and transmits this as a wavelength channel ( 13 ) in a compound multiplex signal through the WDM network. The receiver ( 12 ) selects...
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7522643 |
Semiconductor laser device
The present invention relates to a semiconductor laser apparatus having a metal body which efficiently cools a semiconductor laser element, in which joining of copper-made members coated with DLC...
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7515346 |
High power and high brightness diode-laser array for material processing applications
Arrangements for combination and fast-axis alignment of fast-axes of diode-laser beams are disclosed. Alignment arrangements include providing each diode-laser with a corresponding alignable...
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7512162 |
Dynamic thermal management of laser devices
The present invention generally relates to dynamic thermal management of a device. In one aspect, a method for thermally controlling a device is provided. The method includes setting a value of a...
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7508855 |
Compact high output power mid-infrared emitter system and method
A mid-infrared emitter sub-system includes a heat sink and a diamond thermal diffusion layer connected to the heat sink through a first thermal bonding layer. The first thermal bonding layer has a...
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7508849 |
Wavelength tunable laser device
A semiconductor optical amplifier, an acousto-optic tunable filter, a phase shifter, a lens, and an internal etalon are arranged in a resonator. Outside the resonator, two lenses, two beam...
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7505691 |
Optical emission module
An optical emission module including an optical emission element, which is driven by a current. A fuse is placed in the current's path. The fuse limits the current through the optical emission...
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7505495 |
Optical assembly comprising multiple semiconductor optical devices and an active cooling device
An optical assembly comprises a first semiconductor optical device and a second semiconductor optical device. The first and second semiconductor optical devices may, for example, be laser diodes or...
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7502398 |
Thermally tuned diode-laser bar package
A directly cooled diode-laser bar package includes a diode-laser bar bonded to a heat-sink. The operating temperature of the diode-laser bar can be selectively varied by varying the thermal...
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7502396 |
Solid-state laser apparatus
A solid-state laser apparatus which can improve its durability is provide. In the solid-state laser apparatus 1 , a main pipe 11 for circulating a coolant through a solid-state laser medium 3 ...
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7499477 |
Internal combustion engine
The invention relates to an internal combustion engine with a laser ignition device ( 1 ), Q-switched, pumped solid-state laser with a pulsed pumped light source ( 30 ), a solid laser crystal ( 2...
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7492806 |
Compact mid-IR laser
A compact mid-IR laser device utilizes a quantum cascade laser to provide mid-IR frequencies suitable for use in molecular detection by signature absorption spectra. The compact nature of the...
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7489716 |
Semiconductor laser device, method for manufacturing the same and optical pickup apparatus
A semiconductor laser chip is mounted on one surface of an electrode lead for chip mounting having a heat release region for releasing heat around the semiconductor laser chip. Therefore, it is...
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7486710 |
Semiconductor laser device and method of manufacturing the same
A semiconductor laser device 1 comprises: a heat sink 20 , in turn comprising a main cooler unit 21 , formed by joining metal members, a fluid channel 30 , formed inside the main cooler unit ...
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