Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 7291853 | Discharge produced plasma EUV light source An DPP EUV source is disclosed which may comprise a debris mitigation apparatus employing a metal halogen gas producing a metal halide from debris exiting the plasma. The EUV source may have a debris shield that may comprise a plurality of curvilinear shield members... | 11/06/2007 |
| 7289544 | Optical module The object of the present invention is to provide an optical module for the WDM communication system, in which the oscillation wavelength is on the grid of the WDM regulation, moreover the optical output power and the oscillation wavelength can be controlled indepen... | 10/30/2007 |
| 7286771 | Multi-channel optical transmitter incorporating a tunable optical signal source and method for transmitting a multi-channel optical signal The multi-channel optical transmitter is composed of a tunable optical signal source, an optical multiplexer and an intensity reducer. The tunable optical signal source includes a tunable laser, and additionally includes an optical signal output through which it out... | 10/23/2007 |
| 7286582 | Optical external cavities having brewster angle wedges This invention consists of an optical external cavity having specialized Brewster angle wedges. The external cavity apparatus utilizes several types of very high index of refraction wedges made from semiconductor and special glass materials. The apparatus limits the... | 10/23/2007 |
| 7283571 | Method and system for performing wavelength locking of an optical transmission source A system for locking the operating wavelength of an optical transmission source, the system including: a pattern of nanostructures being optically coupled to the optical transmission source and adapted to perform notch filtering; at least one photodetector optically... | 10/16/2007 |
| 7283694 | Transmitter photonic integrated circuits (TxPIC) and optical transport networks employing TxPICs A photonic integrated circuit (PIC) chip comprising an array of modulated sources, each providing a modulated signal output at a channel wavelength different from the channel wavelength of other modulated sources and a wavelength selective combiner having an input o... | 10/16/2007 |
| 7283572 | Measurement of wavelength transients in tunable lasers A high resolution measurement method and apparatus for tracking wavelength transients in tunable lasers. The apparatus comprises a Mach-Zehnder interferometer (MZI) which is used to generate a self-heterodyne signal between the wavelength transient to be measured, w... | 10/16/2007 |
| 7280567 | High-power red, orange, green, blue (ROGB) fiber lasers and applications thereof An all-fiber device platform for producing high-power ROGB or RGB laser output comprises an optical fiber including multiple waveguide gain regions embedded within a common inner cladding and within an outer cladding, an optical cavity defined by dielectric reflecto... | 10/09/2007 |
| 7277188 | Systems and methods for implementing an interaction between a laser shaped as a line beam and a film deposited on a substrate Systems and methods are disclosed for focusing a beam for an interaction with a film deposited on a substrate wherein the focused beam defines a short axis and a long axis. In one aspect, the system may include a detecting system to analyze light reflected from the ... | 10/02/2007 |
| 7277464 | Method and apparatus for controlling the output of a gas discharge laser system The present invention relates to a fluorine gas discharge laser system and control of replenishment of fluorine gas as the gas discharge laser operates and consumes fluorine. ... | 10/02/2007 |
| 7273683 | Fiber optic devices having volume bragg grating elements Fiber optic devices including volume Bragg grating (VBG) elements are disclosed. A fiber optic device may include one or more optical inputs, one or more VBG elements, and one or more optical receivers. Methods for manufacturing VBG elements and for controlling filt... | 09/25/2007 |
| 7274441 | Natural fiber span reflectometer providing a virtual differential signal sensing array capability A CW lightwave modulated by a continuously reiterated pseudorandom (PN) code sequence is launched into an end of a span of ordinary optical fiber cable. Portions of the launched lightwave back propagate to the launch end from a continuum of locations along the span ... | 09/25/2007 |
| 7271884 | Natural fiber span reflectometer providing a virtual phase signal sensing array capability A CW lightwave modulated by a continuously reiterated psuedorandom code sequence is launched into an end of a span of ordinary optical fiber cable. Portions of the launched lightwave back propagate to the launch end from a continuum of locations along the span becau... | 09/18/2007 |
| 7272160 | Single-frequency Brillouin fiber ring laser with extremely narrow linewidth A single-frequency Brillouin fiber ring laser with extremely narrow linewidth comprises a single-frequency narrow-linewidth rapid-tunable pump laser, a temperature-controlled acoustically-damped package for Brillouin fiber ring laser cavity, and an auto-tracking fee... | 09/18/2007 |
| 7272270 | Optical modulator and method of manufacturing same Laser light emitted from a vertically confined surface emitting laser (VCSEL) is incident on a side surface near an end region of an optical waveguide. The end region of the optical waveguide is processed by polishing to taper at an angle of 45 degrees, and an optic... | 09/18/2007 |
| 7268863 | Natural fiber span reflectometer providing a spread spectrum virtual sensing array capability A CW lightwave modulated by a continuously reiterated autocorrelated spectrum-spreading signal is launched into an end of a span of ordinary optical fiber cable. Portions of this lightwave back propagate to the launch end from a continuum of span locations because o... | 09/11/2007 |
| 7269192 | Optical transmitting module and a method for controlling the same The present invention provides a semiconductor laser module that reduces a shift of the output wavelength after the laser diode is practically operated. The laser module comprises the semiconductor laser, a thermistor, a thermoelectric cooler, a heater and a control... | 09/11/2007 |
| 7269190 | Er-doped superfluorescent fiber source with enhanced mean wavelength stability An erbium-doped (Er-doped) superfluorescent fiber source (SFS) has an enhanced mean wavelength stability. A method determines an estimated mean wavelength of a SFS. The method includes providing an Er-doped SFS having an actual mean wavelength. The method further in... | 09/11/2007 |
| 7266137 | Laser gas replenishment method Output beam parameters of a gas discharge laser are stabilized by maintaining a molecular fluorine component at a predetermined partial pressure using a gas supply unit and a processor. The molecular fluorine is subject to depletion within the discharge chamber. Gas... | 09/04/2007 |
| 7263262 | All-optical logic gates using nonlinear elements-claim set VI An all-optical logic gates comprises a nonlinear element such as an optical resonator configured to receive optical input signals, at least one of which is amplitude-modulated to include data. The nonlinear element is configured in relation to the carrier frequency ... | 08/28/2007 |
| 7260279 | Integrated opto-electronic oscillators Integrated opto-electronic oscillators that use micro resonators in the optical section of the opto-electronic feedback loop. ... | 08/21/2007 |
| 7260500 | Method and apparatus for monitoring and verifying equipment status An equipment status monitoring system having at least one multi-modal resonator included as a part of a semiconductor processing system and a power source coupled to the at least one multi-modal resonator. The power source is configured to produce a microwave excita... | 08/21/2007 |
| 7256879 | Semiconductor array tester An array tester (10) characterizes individual ones (111) of a semiconductor devices of an array (11) based on polarization-resolving an optical far-field measurement of the individual chips (111) as a function of angular position. Two pai... | 08/14/2007 |
| 7253902 | Wavelength detector A radiation measurement device for determining a wavelength-related characteristic of radiation from a radiation source is provided. The device includes a wavelength-dependent optical element (e.g., bandpass filter), and an optical power-measuring detector (e.g., ph... | 08/07/2007 |
| 7254146 | Continuous wavelength tuning of DBR laser A continuous tunable laser system includes at least one DBR laser. The DBR laser includes a Phase section, a Braggs section, and a gain medium. The DBR laser is capable of generating a continuous-wave laser signal. A Phase current input is electrically connected to ... | 08/07/2007 |
| 7251261 | Temperature tuning the wavelength of a semiconductor laser using a variable thermal impedance An apparatus is described in which the temperature of a semiconductor laser (or other device) can be set to a desired value by using the heat generated by the laser itself in conjunction with an adjustable thermal impedance heat sink to effect the desired temperatur... | 07/31/2007 |
| 7247870 | Systems for protecting internal components of an EUV light source from plasma-generated debris Systems and methods are disclosed for protecting an EUV light source plasma production chamber optical element surface from debris generated by plasma formation. In one aspect of an embodiment of the present invention, a shield is disclosed which comprises at least ... | 07/24/2007 |
| 7248617 | Use of volume bragg gratings 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 (VBG) element that receives input light generated by a light-emitting... | 07/24/2007 |
| 7248618 | Systems and methods for second harmonic generation using three-dimensional 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 (VBG) element that receives input light generated by a light-emitting... | 07/24/2007 |
| 7245793 | Optical waveguide circuit An optical waveguide circuit includes a first loss component for causing a diffraction loss of light propagating through an optical waveguide, and a second loss component provided at least one of before and after the first loss component, for causing a diffraction l... | 07/17/2007 |
| 7236507 | Time-based adjustment of temperature control of laser to stabilize wavelengths Method and apparatuses for compensating for wavelength drift in a fiber-optic laser transmitter includes 1) controlling a temperature within the optoelectronic assembly at a defined level; 2) driving the optoelectronic assembly to emit light, wherein the emitted lig... | 06/26/2007 |
| 7236656 | Optical transport network An optical transport network comprises a monolithic transmitter photonic integrated circuit (TxPIC) InP-based chip and a monolithic receiver photonic integrated circuit (RxPIC) InP-based chip. ... | 06/26/2007 |
| 7236674 | Optical waveguide device, coherent light source using the same and optical apparatus having the same An optical waveguide device has a substrate composed of a nonlinear optical material and a periodically domain-inverted structure having the same composition as the nonlinear optical material, where the domain-inverted structure has a refractive index distribution r... | 06/26/2007 |
| 7233608 | Frequency-stabilized laser source adapted for use as a frequency standard, in particular in the field of telecommunications A frequency-stabilized laser source that is adapted for use as a frequency standard. The frequency of the laser source is locked and the laser beam delivered by the laser source on a transition of an absorber chemical element. The technique combines both operation w... | 06/19/2007 |
| 7231117 | Apparatus for stabilizing laser wavelength A technique to stabilize the effective refraction index of a laser generating system's wave guide, as well as a technique to stabilize the phase of the wave guide. In at least one embodiment of the invention, a polymer is used within the wave guide to counteract the... | 06/12/2007 |
| 7230964 | Lithography laser with beam delivery and beam pointing control The present invention provides a modular high repetition rate ultraviolet gas discharge laser light source with a beam delivery to a production line machine. The system includes an enclosed and purged beam path with beam pointing control for delivery the laser beam ... | 06/12/2007 |
| 7230959 | Tunable laser with magnetically coupled filter Laser apparatus and methods that permit actuation of a tuning element via a magnetically coupled drive assembly, and which provide for isolation of contamination-sensitive optical surfaces within a hermetically sealed enclosure with a magnetically coupled drive asse... | 06/12/2007 |
| 7223232 | Endoscope probe system having confocal optical systems An endoscope probe system includes an endoscope probe to be inserted into a body cavity to observe tissue of a living body. The endoscope probe system further includes a laser source that emits multiple laser beams, a light detector having multiple light receiving e... | 05/29/2007 |
| 7224858 | Optical transmission network with a receiver photonic integrated circuit (RxPIC) utilizing an optical service chanel (OSC) An optical receiver photonic integrated circuit (RxFIC) comprises a semiconductor monolithic chip having an input to receive from an optical transmissior link a combined channel signal originating from an optical transmitter source and comprising a plurality of chan... | 05/29/2007 |
| 7218864 | Optical wavelength locking apparatus and method for a multi-channel optical communication system An optical wavelength locking system is provided that includes a plurality of optical signal generating units for generating optical signals corresponding to a plurality of channels, and an optical wavelength locking unit for receiving the optical signals correspond... | 05/15/2007 |
