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| Number | Title | Issue Date |
| 7376309 | Optical structure An optical structure comprising an optical resonator is provided. The optical resonator comprises a first set of nested closed optical regions, forming a distributed feedback resonator structure with a direction of radially alternating optical refractive index, and ... | 05/20/2008 |
| 7372056 | LPP EUV plasma source material target delivery system An EUV light generation system and method is disclosed that may comprise a droplet generator producing plasma source material target droplets traveling toward the vicinity of a plasma source material target irradiation site; a drive laser; a drive laser focusing opt... | 05/13/2008 |
| 7373045 | Method and apparatus for processing optical signals with supergratings An optical component including at least one optical supergrating is provided. The optical supergrating includes a quantized refractive index profile adapted to exhibit a finite plurality of refractive indexes; which in turn are adapted to generate a reflectance spec... | 05/13/2008 |
| 7369583 | Electrooptically wavelength-tunable resonant cavity optoelectronic device for high-speed data transfer A device contains at least one wavelength-tunable element controlled by an applied voltage and at least two resonant cavities, where the resonant wavelength of the tunable element is preferably elecrooptically tuned using the quantum confined Stark effect around the... | 05/06/2008 |
| 7369597 | Laser output light pulse stretcher Providing a high peak power short pulse duration gas discharge laser output pulse comprises a pulse stretcher a laser output pulse optical delay initiating optic diverting a portion of the output laser pulse into an optical delay having an optical delay path and com... | 05/06/2008 |
| 7365349 | EUV light source collector lifetime improvements An apparatus and method for cleaning a plasma source material compound from a plasma produced EUV light source collector optic which may comprise reacting the plasma source material compound with hydrogen to form a hydride of the plasma source material from the plas... | 04/29/2008 |
| 7366221 | Laser apparatus and method of driving diffraction grating A laser apparatus is disclosed. The laser apparatus has a diffraction grating that receives laser light from a semiconductor laser, emits first order diffracted light having a predetermined wavelength to the semiconductor laser, and reflects zero-th order light, a r... | 04/29/2008 |
| 7366220 | Tunable laser A tunable laser includes an optical waveguide alternately including a gain waveguide portion and a wavelength controlling waveguide portion, and a diffraction grating. The diffraction grating includes a gain diffraction grating and a wavelength controlling diffracti... | 04/29/2008 |
| 7359648 | Wavelength tuning optimization of semiconductor lasers A method of characterizing a tunable semiconductor laser diode by varying the laser tuning currents of a section, and measuring the output power transmitted by the laser through a wavelength discriminating device (WDD), in such a way that determines the currents nee... | 04/15/2008 |
| 7359423 | Distributed feedback laser diode A semiconductor laser includes an active layer on an n-type InP substrate. A diffraction grating and a p-type InP cladding layer are above the active layer. The diffraction grating has at least one phase shift portion. Facets of the distributed feedback laser each h... | 04/15/2008 |
| 7356224 | Method and apparatus for detecting multiple optical wave lengths Optical gratings that perform a number of functions at various wavelengths are formed by various methods that preserve spectral information within a wavelength band, the functions including: coupling radiation from one waveguide to another, controllable gratings tha... | 04/08/2008 |
| 7355657 | Laser illuminated projection displays A projection video display includes a light source including an OPS-laser delivering laser radiation in multiple transverse modes (a multiple-transverse-mode OPS-laser). The display includes a spatial light modulator for spatially modulating the radiation from the m... | 04/08/2008 |
| 7355191 | Systems and methods for cleaning a chamber window of an EUV light source Systems and methods are disclosed for cleaning a chamber window of an extreme ultraviolet (EUV) light source. The window may have an inside surface facing a chamber interior and an opposed outside surface and the light source may generate debris by plasma formation.... | 04/08/2008 |
| 7352791 | Optical systems including wavefront correcting optical surfaces The present invention relates to optical systems, beam expanding assemblies, line narrowing modules, and lasers having refractive optical elements with wavefront correcting optical surfaces. The present invention enables the skilled artisan to provide optical system... | 04/01/2008 |
| 7352783 | Tunable fiber laser light source A loop is formed with an optical fiber by providing a gain medium having a gain with respect to an oscillation wavelength. Light retrieved by the optical circulator 13 from the optical fiber loop is enlarged and projected to a mirror 23. A diffraction ... | 04/01/2008 |
| 7339964 | Laser diode with phase matching grating A semiconductor diode laser that generates light at wavelengths longer than conventional diode lasers. The laser includes a first gain element that generates a first “pump” laser beam having a first optical frequency and a second gain element that generates a se... | 03/04/2008 |
| 7339968 | Current biased dual DBR grating semiconductor laser Dual-wavelength operation is easily achieved by biasing the gain section. Multiple gratings spaced apart from each other are separated from an output aperture by a gain section. A relatively low coupling coefficient, κ, in the front grating reduces the added cavity... | 03/04/2008 |
| 7333735 | Communication using VCSEL laser array Ultrafast directional beam switching, using coupled VCSELs is combined with a light modulator to provide information transfer at bit rates of tens of GHz. This approach is demonstrated to achieve beam switching frequencies of 32-50 GHz in some embodiments and direct... | 02/19/2008 |
| 7330653 | Quantum dense coding system A Quantum Dense Coding System. The system includes a source, a transmitter and a receiver. The source is capable of down-converting a pump photon into a signal photon and an idler photon and outputting probability amplitudes, the signal photon and the idler photon, ... | 02/12/2008 |
| 7324567 | Modulation frequency tunable optical oscillator Provided is a millimeter-wave band frequency optical oscillator that can be used as an oscillation frequency signal source for a millimeter-wave forwarded to wireless subscribers from a base station of a millimeter-wave wireless subscriber communication system for a... | 01/29/2008 |
| 7324719 | Method tuning optical components integrated in a monolithic photonic integrated circuit (PIC) A method of tuning optical components integrated on a monolithic semiconductor chip having a plurality of first optical components integrated on the chip with each fabricated to approximate an emission wavelength along a given wavelength grid and together forming a ... | 01/29/2008 |
| 7324195 | Planar waveguide based grating device and spectrometer for species-specific wavelength detection Planar waveguide based grating devices and spectrometers, for species-specific wavelength detection for example, are disclosed. A planar waveguide spectrometer apparatus may have a microfluidic channel or compartment microfabricated integrally with a planar waveguid... | 01/29/2008 |
| 7321607 | External optics and chamber support system A gas discharge laser and method of operating same is disclosed which may comprise a gas discharge laser chamber support structure comprising a first support arm attached to a mounting table; a gas discharge laser chamber slideably engaging the first support arm; an... | 01/22/2008 |
| 7317878 | Quantum switch teleportation for two receivers A quantum switch teleportation system contains one pair of two-mode squeezed light source devices that generate a pair of two-mode squeezed lights, and two receiving devices. The user can switch or select the receiving device to which information will be provided ba... | 01/08/2008 |
| 7317179 | Systems and methods to shape laser light as a homogeneous line beam for interaction with a film deposited on a substrate Systems and methods are disclosed for shaping and homogenizing a laser beam for interaction with a film. The shaping and homogenizing system may include a lens array and a lens that is positioned to receive laser light from the lens array and produce a respective el... | 01/08/2008 |
| 7317739 | Mode-locked laser using a mode-locking wavelength selective reflector In accordance with the invention, a mode-locked laser comprises an optical gain medium disposed within an optical cavity formed by a first reflector and a wavelength selective second reflector to achieve mode-locking operation. Advantageously, the wavelength reflect... | 01/08/2008 |
| 7317536 | Spectral bandwidth metrology for high repetition rate gas discharge lasers A bandwidth meter apparatus and method for measuring the bandwidth of a spectrum of light emitted from a laser input to the bandwidth meter which may comprise an optical bandwidth monitor providing a first output representative of a first parameter which is indicati... | 01/08/2008 |
| 7315697 | Light source for generating an output signal having spaced apart frequencies A multiple wavelength light source generates an output signal having a comb of accurately spaced apart frequencies with variable free spectral range in the C-band of optical fiber communication. The light source employs an electro-optical modulator (EOM) driven by a... | 01/01/2008 |
| 7313158 | Integrated high speed modulator for grating-outcoupled surface emitting lasers A single-mode grating-outcoupled surface emitting (GSE) semiconductor laser architecture is provided. This architecture enables high speed modulation of the GSE laser, which is accomplished by only varying the relative phase of counter propagating waves in the outco... | 12/25/2007 |
| 7313159 | Apparatus and method for providing a single-mode grating-outcoupled surface emitting laser with detuned second-order outcoupler grating An improved grating-outcoupled surface-emitting semiconductor laser architecture is provided. A second-order grating is placed between two distributed Bragg reflector gratings. The period of the second order grating is positively or negatively detuned from the distr... | 12/25/2007 |
| 7310363 | Integrated wavelength tunable single and two-stage all-optical wavelength converter A semiconductor tunable laser (10) and an interferometer (12) coupled to the tunable laser (10) are monolithically fabricated in a semiconductor heterostructure. The laser also comprises a buried ridge stripe waveguide laser. The interferometer ... | 12/18/2007 |
| 7298771 | 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... | 11/20/2007 |
| 7295778 | Wavelength division multiplexed passive optical network system Disclosed is a wavelength division multiplexed passive optical network (WDM PON) system including a central office, a remote Node, and an optical fiber coupled between the central office and the remote node, wherein the central office includes an optical power split... | 11/13/2007 |
| 7295591 | Long-pulse pulse power system for gas discharge laser A long pulse pulse power system for gas discharge lasers. The system includes a sustainer capacitor for accepting a charge from a high voltage pulse power source. A peaking capacitor with a capacitance value of less than half the sustainer capacitance provides the h... | 11/13/2007 |
| 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 |
| 7292614 | Organic laser and liquid crystal display An asymmetric light emitting structure for producing polarized light that includes a light emitting layer having a plurality of light emitting species, wherein orientation of the light emitting species is uncontrolled. Receipt of the emitted light from the light emi... | 11/06/2007 |
| 7286588 | Semiconductor laser with grating structure for stabilizing the wavelength of optical radiation An optoelectronic device having a semiconductor laser diode and a grating structure for stabilizing the optical wavelength of optical radiation generated by the laser diode. ... | 10/23/2007 |
| 7286579 | Apparatus and method for adjusting external-cavity lasers Adjustment of a tunable external-cavity laser is simplified by incorporating a mount that includes a base, a main body, a reflecting surface, a diffracting surface and a hinge coupling the main body to the base. The laser additionally includes a light source, a conv... | 10/23/2007 |
| 7284913 | Integrated fiber attach pad for optical package A fiber-coupled optical component and housing comprising a substrate having a substantially planar fiber mount region and an optical component mount region adjacent to the fiber mount region. The optical component and housing may include a metallic mount pad formed ... | 10/23/2007 |
| 7283706 | Parabolic waveguide-type collimating lens with tunable external cavity laser diode provided with the same The present invention relates to a semiconductor based parabolic waveguide-type collimating lens and a monolithically integrated type tunable external cavity laser diode light source. The monolithically integrated type tunable external cavity laser diode light sourc... | 10/16/2007 |
