Did You Know...
...that Robert Adler has the dubious distinction of being the Father of the Couch Potato? Back in 1955 Adler was employed by what was then Zenith Radio Corp., where he was charged to invent something that would allow viewers to turn down the TV volume without leaving their chairs. After a series of flops (such as a wired contraption that people tripped over), Adler hit on the idea of using sound waves. Thus the Remote Control was born...
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| Number | Title | Issue Date |
| 6912363 | Optical module which permits stable laser output An optical module for use in detecting a plurality of different wavelengths by making use of the multiple wavelength selectivity of an etalon. The optical module includes a semiconductor laser, a lens for converting a beam emitted from the semiconductor laser into a... | 06/28/2005 |
| 6911674 | Feedback and coupling structures and methods A light emitting device may include a light emitting layer such as an organic semiconductor material, one or more feedback structures, and a coupling structure. The one or more feedback structures may cause light emitted by the light emitting layer to be fed back th... | 06/28/2005 |
| 6912235 | Apparatus and method for phase control of tunable external cavity lasers An apparatus and method for controlling the phase of a tunable laser is provided. Stabilization of the mode of a laser beam is provided as the laser is tuned to a target frequency. For one embodiment, a laser generates a reference beam and an output beam. The power ... | 06/28/2005 |
| 6912238 | Particle beam device A laser and method of producing laser light. The laser and method involve passing a high energy beam of particles through an evacuated chamber. A static electric or magnetic field is established in the chamber in a direction that is essentially perpendicular to the ... | 06/28/2005 |
| 6909734 | High-power, manufacturable sampled grating distributed Bragg reflector lasers A tunable laser is disclosed including a gain section for creating a light beam over a bandwidth, a phase section for controlling the light beam around a center frequency of the bandwidth, a waveguide for guiding and reflecting the light beam in a cavity including a... | 06/21/2005 |
| 6909732 | Method and apparatus for controlling optical wavelength based on optical frequency pulling Optical wavelength control method and apparatus which are capable of controlling an optical wavelength of a light source with a central wavelength which is uncertain and unstable at nanometer order is disclosed. In the optical wavelength control apparatus, the contr... | 06/21/2005 |
| 6909854 | Methods and apparatus for beam shaping in optical wireless communications system An optical wireless communications system (1) comprises a server or transceiver hub (6) transmitting and/or receiving optical communications with geographically dispersed subscriber units (8) via optical beams. The transceiver hub (6) tra... | 06/21/2005 |
| 6906309 | Injection-seeding of a multi-tone photonic oscillator A multi-tone photonic oscillator comprises a laser; an optical modulator coupled to the laser; and a delay line and a photodetector coupled to the optical modulator for generating a delayed electrical signal representation of the output of the optical modulator; whe... | 06/14/2005 |
| 6906787 | Lithographic apparatus, device manufacturing method, and device manufactured thereby A lithographic projection apparatus includes a radiation system for providing a projection beam of primary radiation, a support structure for supporting patterning structure, the patterning structure serving to pattern the projection beam according to a desired patt... | 06/14/2005 |
| 6907052 | Tunable optical local oscillator A tunable optical local oscillator is used for optical heterodyne signal detection using an electrooptic Mach-Zehnder modulator to produce a rapidly tunable optical signal from a tunable RF frequency generator. A combination of the Mach-Zehnder modulator and optical... | 06/14/2005 |
| 6907058 | Energy monitor for molecular fluorine laser A beam parameter monitoring unit for coupling with a molecular fluorine (F2) or ArF laser resonator that produces an output beam having a wavelength below 200 nm includes a detector and a beam path enclosure. The unit may also include a beam splitter with... | 06/14/2005 |
| 6904067 | Back facet wavelength locker tuning and assembly method Wavelength lockers, which monitor the wavelength drift of a laser's beam due to aging, are tunable to adjust for manufacturing misalignments between its various optical components. Tuning is accomplished by adjusting the position of a collimating lens using a flexur... | 06/07/2005 |
| 6904070 | Tunable laser and laser current source A laser system including a controller for monitoring and controlling various functions of a laser assembly. The laser controller may include a wavelength tuning circuit for adjusting and locking the wavelength of the external cavity. To perform various monitoring an... | 06/07/2005 |
| 6904073 | High power deep ultraviolet laser with long life optics The present invention provides long life optics for a modular, high repetition rate, ultraviolet gas discharge laser systems producing a high repetition rate high power output beam. The invention includes solutions to a surface damage problem discovered by Applicant... | 06/07/2005 |
| 6901087 | Broadband laser source A broadband laser source comprising: a resonant cavity (1) containing a medium (2) which emits optical energy (3) in a continuum of wavelengths in response to application of pump energy (4) to the medium (2); a source of pump energ... | 05/31/2005 |
| 6898221 | Apparatus for frequency tuning and locking and method for operating same An apparatus comprising a first reference element having an output power that varies monotonically with input frequency over an operating frequency range and receiving at least a portion of an output beam of light from an optical source. A second reference element h... | 05/24/2005 |
| 6898231 | Off-peak optical pumping of yttrium orthovanadate A laser includes an Nd:YVO4 crystal end-pumped with diode-laser light having a wavelength at which the absorption coefficient for Nd:YVO4 is less than about 0.35 (35%) of the absorption coefficient at 808 nm. ... | 05/24/2005 |
| 6888863 | System comprising optical semiconductor waveguide device An improved optical communication system is provided, the system particularly suited for so-called short-haul applications, e.g., applications involving transmission over distances less than 100 km, such as metro applications. The system uses an external cavity lase... | 05/03/2005 |
| 6888854 | Integrated monitor device An optical monitor device and method are presented aimed at providing low-loss monitoring of an optical signal confined in an optical guiding structure. An optical resonator structure is placed spatially adjacent to the guiding structure and is optically coupled to ... | 05/03/2005 |
| 6888857 | Optical module The light-emitting module includes a semiconductor light-emitting device, a first optical detector for monitoring the magnitude of light emitted from the semiconductor device, a second optical detector for monitoring an oscillation wavelength of the semiconductor de... | 05/03/2005 |
| 6888858 | Method for frequency and mode stabilization of a tuneable laser A method of frequency and mode stabilizing a tuneable laser, wherein one or more measurable magnitudes is/are measured, wherein the laser has been characterized with respect to a number of operation points, and wherein the values of the measurable magnitude or magni... | 05/03/2005 |
| 6885684 | Laser control circuit and laser module A laser control circuit comprises a temperature control circuit and a data processing circuit. The temperature control circuit adjusts the temperature of a laser diode by controlling a temperature regulator. The data processing circuit receives the output of a wavel... | 04/26/2005 |
| 6873418 | Optical mountings for gas discharge MOPA laser spectral analysis module A wavemeter for a high repetition rate gas discharge laser having an output laser bean comprising a pulsed output of greater than or equal to 15 mJ per pulse, sub-nanometer bandwidth tuning range pulses having a femptometer bandwidth precision and tens of femptomete... | 03/29/2005 |
| 6873631 | Integrated opto-electronic oscillators having optical resonators Systems and techniques of incorporating an optical resonator in an optical part of a feedback loop in opto-electronic oscillators. This optical resonator provides a sufficiently long energy storage time and hence to produce an oscillation of a narrow linewidth and l... | 03/29/2005 |
| 6870865 | Laser oscillation apparatus, exposure apparatus, semiconductor device manufacturing method, semiconductor manufacturing factory, and exposure apparatus maintenance method A laser oscillation apparatus includes a wavelength change unit for driving a wavelength selection element in a band-narrowing module and changing the oscillation wavelength of a laser beam to a target value, and an oscillation history memory for storing the oscilla... | 03/22/2005 |
| 6870629 | Optical frequency sweep control and readout by using a phase lock The invention allows for the accurate, real-time readout of the optical frequency of a swept-wavelength laser device by counting the number of fringes of a calibrated etalon that occur as the laser is swept. The distinguishing feature of the present invention is tha... | 03/22/2005 |
| 6868102 | CS-RZ optical clock signal generator, and a resynchronized optical multiplexer containing such a generator The present invention provides a generator of a CS-RZ optical clock signal at a predetermined clock frequency. The generator contains a first laser source and a second laser source which respectively produce first and second continuous lightwaves, where the laser fr... | 03/15/2005 |
| 6868103 | Single photon source based on transmitters with selectively distributed frequencies Apparatus for single photon source based on emitters with frequencies distributed in a chosen manner. In one embodiment, the apparatus comprises an opto-electronic component capable or emitting light pulses containing a single photon comprising a resonant optical ca... | 03/15/2005 |
| 6868100 | Methods for robust channel switching of widely-tunable sampled-grating distributed bragg reflector lasers The present invention describes methods and apparatus for reliably assuring that correct mirror currents are selected during a channel switch to achieve the desired wavelength channel, based on feedback from either internal or external means combined with a mode map... | 03/15/2005 |
| 6868099 | Frequency-narrowed high power diode laser system with external cavity A high power diode laser system utilizes an external cavity to narrow the spectral width of a high power multimode diode laser to change the output power normally produced by the diode from a broad spectrum to a very narrow spectrum. The power output of the laser sy... | 03/15/2005 |
| 6865196 | Laser spectroscopy using a master/slave architecture A system for tuning one or more second radiant sources relative to a first radiant source may include a coupler configured to combine output signals from the first radiant source and a second radiant source to generate a heterodyne signal containing a frequency diff... | 03/08/2005 |
| 6865197 | Laser diode module A laser diode module includes a laser diode device, an optical device like a single lens placed in front of the laser diode device for reflecting front radiation emitted from a front surface of the laser diode device, and a photodiode placed at the back of the laser... | 03/08/2005 |
| 6865195 | Edge-emitting semiconductor tunable laser The invention concerns a tunable edge-emitting semiconductor laser (10) including a resonant cavity delimited by two reflectors (15, 20), one of which is a fixed reflector (15) and the other of which is a mobile reflector (20), and includ... | 03/08/2005 |
| 6862303 | Multiwavelength locking method and apparatus using acousto-optic tunable filter Disclosed is a multiwavelength locking method and apparatus using an acousto-optic tunable filter in an optical communication system including optical transport networks, in which output wavelengths of light sources are monitored under the condition in which pilot s... | 03/01/2005 |
| 6859469 | Method and apparatus for laser wavelength stabilization In an apparatus and method for locking the wavelength of a laser, a fringe-producing optical element is disposed directly in the in the output beam from the laser. The fringe-producing optical element produces a fringe pattern in a second light beam derived from the... | 02/22/2005 |
| 6853656 | Laser apparatus The present invention relates to a laser apparatus comprising a laser light emitting optical system for emitting laser light to a surface, a power stabilizing system for stabilizing the laser light power with a predetermined power interval, and a deflection system f... | 02/08/2005 |
| 6853653 | Laser spectral engineering for lithographic process An integrated circuit lithography technique called spectral engineering by Applicants, for bandwidth control of an electric discharge laser. In a preferred process, a computer model is used to model lithographic parameters to determine a desired laser spectrum neede... | 02/08/2005 |
| 6853652 | Spatial filtering of laser ghosts An optical servo writer system including a laser subsystem to generate a multiplicity of light beams, a lens positioned to receive and focus the light beams and a spatial filter positioned in the system so as to allow a subset of the light beams to pass through the ... | 02/08/2005 |
| 6847663 | Wavelength locker and method for locking wavelengths for optical transmitters Disclosed is a wavelength locker and a method for locking wavelengths for an optical transmitter which includes a semiconductor light source for projecting light for optical communication from the front face thereof, the oscillating wavelength of the optical transmi... | 01/25/2005 |
| 6845109 | Method for correcting the shift of output wavelength of light source The present invention provides a method for correcting a shift of an output wavelength of a light source. The output wavelength shift correcting method derives simple equations through experimental processes, predicts a shift degree of the output wavelength with res... | 01/18/2005 |
