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| Number | Title | Issue Date |
| 6597820 | Low-cost fiber optic pressure sensor The size and cost of fabricating fiber optic pressure sensors is reduced by fabricating the membrane of the sensor in a non-planar shape. The design of the sensors may be made in such a way that the non-planar membrane becomes a part of an air-tight cavit... | 07/22/2003 |
| 6590209 | Technique to quantitatively measure magnetic properties of thin structures at <10 NM spatial resolution A highly sensitive and high resolution magnetic microscope images magnetic properties quantitatively. Imaging is done with a modified transmission electron microscope that allows imaging of the sample in a zero magnetic field. Two images from closely spac... | 07/08/2003 |
| 6570702 | Antiguided fiber ribbon laser The invention is a ribbon of an optical material with a plurality of cores that run along its length. The plurality of cores includes lasing impurity doped cores in an alternating spaced arrangement with index-modifying impurity doped cores. The ribbon co... | 05/27/2003 |
| 6538739 | Bubble diagnostics The present invention is intended as a means of diagnosing the presence of a gas bubble and incorporating the information into a feedback system for opto-acoustic thrombolysis. In opto-acoustic thrombolysis, pulsed laser radiation at ultrasonic frequencie... | 03/25/2003 |
| 6528814 | Cryogenic, high-resolution x-ray detector with high count rate capability A cryogenic, high-resolution X-ray detector with high count rate capability has been invented. The new X-ray detector is based on superconducting tunnel junctions (STJs), and operates without thermal stabilization at or below 500 mK. The X-ray detector ex... | 03/04/2003 |
| 6475150 | System and method for ultrasonic tomography A system and method for doing both transmission mode and reflection mode three-dimensional ultrasonic imagining. The multimode imaging capability may be used to provide enhanced detectability of cancer tumors within human breast, however, similar imaging ... | 11/05/2002 |
| 6426506 | Compact multi-bounce projection system for extreme ultraviolet projection lithography An optical system compatible with short wavelength (extreme ultraviolet) radiation comprising four optical elements providing five reflective surfaces for projecting a mask image onto a substrate. The five optical surfaces are characterized in order from ... | 07/30/2002 |
| 6423935 | Identification marking by means of laser peening The invention is a method and apparatus for marking components by inducing a shock wave on the surface that results in an indented (strained) layer and a residual compressive stress in the surface layer. One embodiment of the laser peenmarking system rapi... | 07/23/2002 |
| 6421390 | High-speed pulse-shape generator, pulse multiplexer The invention combines arbitrary amplitude high-speed pulses for precision pulse shaping for the National Ignition Facility (NIF). The circuitry combines arbitrary height pulses which are generated by replicating scaled versions of a trigger pulse and sum... | 07/16/2002 |
| 6414320 | Composition analysis by scanning femtosecond laser ultraprobing (CASFLU). The composition analysis by scanning femtosecond ultraprobing (CASFLU) technology scans a focused train of extremely short-duration, very intense laser pulses across a sample. The partially-ionized plasma ablated by each pulse is spectrometrically analyze... | 07/02/2002 |
| 6411418 | High-performance parallel processors based on star-coupled wavelength division multiplexing optical interconnects As the performance of individual elements within parallel processing systems increases, increased communication capability between distributed processor and memory elements is required. There is great interest in using fiber optics to improve interconnect... | 06/25/2002 |
| 6410884 | Contour forming of metals by laser peening A method and apparatus are provided for forming shapes and contours in metal sections by generating laser induced compressive stress on the surface of the metal workpiece. The laser process can generate deep compressive stresses to shape even thick compon... | 06/25/2002 |
| 6398374 | Condenser for ring-field deep ultraviolet and extreme ultraviolet lithography A condenser for use with a ring-field deep ultraviolet or extreme ultraviolet lithography system. A condenser includes a ripple-plate mirror which is illuminated by a collimated or converging beam at grazing incidence. The ripple plate comprises a flat or... | 06/04/2002 |
| 6396900 | Multilayer films with sharp, stable interfaces for use in EUV and soft X-ray application The reflectivity and thermal stability of Mo/Si (molybdenum/silicon) multilayer films, used in soft x-ray and extreme ultraviolet region, is enhanced by deposition of a thin layer of boron carbide (e.g., B4 C) between alternating layers of Mo a... | 05/28/2002 |
| 6385228 | Coherent beam combiner for a high power laser A phase conjugate laser mirror employing Brillouin-enhanced four wave mixing allows multiple independent laser apertures to be phase locked producing an array of diffraction-limited beams with no piston phase errors. The beam combiner has application in l... | 05/07/2002 |
| 6379325 | Opto-acoustic transducer for medical applications This invention is an optically activated transducer for generating acoustic vibrations in a biological medium. The transducer is located at the end of a fiber optic which may be located within a catheter. Energy for operating the transducer is provided op... | 04/30/2002 |
| 6372103 | Ultrashort pulse laser deposition of thin films Short pulse PLD is a viable technique of producing high quality films with properties very close to that of crystalline diamond. The plasma generated using femtosecond lasers is composed of single atom ions with no clusters producing films with high Sp | 04/16/2002 |
| 6368318 | Opto-acoustic recanilization delivery system Fiber delivered laser pulses emulsify thrombus by mechanical stresses that include a combination of pressure, tension and shear stress. Laser radiation is delivered to the locality of a thrombus and the radiation is absorbed by blood, blood dot, or other ... | 04/09/2002 |
| 6351307 | Combined dispersive/interference spectroscopy for producing a vector spectrum A method of measuring the spectral properties of broadband waves that combines interferometry with a wavelength disperser having many spectral channels to produce a fringing spectrum. Spectral mapping, Doppler shifts, metrology of angles, distances and se... | 02/26/2002 |
| 6347106 | Thermally robust semiconductor optical amplifiers and laser diodes A highly heat conductive layer is combined with or placed in the vicinity of the optical waveguide region of active semiconductor components. The thermally conductive layer enhances the conduction of heat away from the active region, which is where the he... | 02/12/2002 |
| 6304584 | Blue diode-pumped solid-state-laser based on ytterbium doped laser crystals operating on the resonance zero-phonon transition The invention provides an efficient, compact means of generating blue laser light at a wavelength near ~493+/-3 nm, based on the use of a laser diode-pumped Yb-doped laser crystal emitting on its zero phonon line (ZPL) resonance transition at a wavelength... | 10/16/2001 |
| 6303901 | Method to reduce damage to backing plate The present invention is a method for penetrating a workpiece using an ultra-short pulse laser beam without causing damage to subsequent surfaces facing the laser. Several embodiments are shown which place holes in fuel injectors without damaging the back... | 10/16/2001 |
| 6285969 | Use of single scatter electron monte carlo transport for medical radiation sciences The single scatter Monte Carlo code CREEP models precise microscopic interactions of electrons with matter to enhance physical understanding of radiation sciences. It is designed to simulate electrons in any medium, including materials important for biolo... | 09/04/2001 |
| 6266353 | Monolithic laser diode array with one metalized sidewall A monolithic, electrically-insulating substrate that contains a series of notched grooves is fabricated. The substrate is then metalized so that only the top surface and one wall adjacent to the notch are metalized. Within the grooves is located a laser b... | 07/24/2001 |
| 6217722 | Process for producing Ti-Cr-Al-O thin film resistors Thin films of Ti-Cr-Al-O are used as a resistor material. The films are rf sputter deposited from ceramic targets using a reactive working gas mixture of Ar and O2. Resistivity values from 104 to 1010 Ohm-cm have been meas... | 04/17/2001 |
| 6198069 | Laser beam temporal and spatial tailoring for laser shock processing Techniques are provided for formatting laser pulse spatial shape and for effectively and efficiently delivering the laser energy to a work surface in the laser shock process. An appropriately formatted pulse helps to eliminate breakdown and generate unifo... | 03/06/2001 |
| 6177993 | Inspection of lithographic mask blanks for defects A visible light method for detecting sub-100 nm size defects on mask blanks used for lithography. By using optical heterodyne techniques, detection of the scattered light can be significantly enhanced as compared to standard intensity detection methods. T... | 01/23/2001 |
| 6175669 | Optical coherence domain reflectometry guidewire A guidewire with optical sensing capabilities is based on a multiplexed optical coherence domain reflectometer (OCDR), which allows it to sense location, thickness, and structure of the arterial walls or other intra-cavity regions as it travels through th... | 01/16/2001 |
| 6167069 | Thermal lens elimination by gradient-reduced zone coupling of optical beams A thermal gradient-reduced-zone laser includes a laser medium and an optically transparent plate with an index of refraction that is less than the index of refraction of the laser medium. The pump face of the laser medium is bonded to a surface of the opt... | 12/26/2000 |
| 6160934 | Hollow lensing duct A hollow lensing duct to condense (intensify) light using a combination of focusing using a spherical or cylindrical lens followed by reflective waveguiding. The hollow duct tapers down from a wide input side to a narrow output side, with the input side c... | 12/12/2000 |
| 6154276 | Waveguide detection of right-angle-scattered light in flow cytometry A transparent flow cell is used as an index-guided optical waveguide. A detector for the flow cell but not the liquid stream detects the Right-Angle-Scattered (RAS) Light exiting from one end of the flow cell. The detector(s) could view the trapped RAS li... | 11/28/2000 |
| 6150630 | Laser machining of explosives The invention consists of a method for machining (cutting, drilling, sculpting) of explosives (e.g., TNT, TATB, PETN, RDX, etc.). By using pulses of a duration in the range of 5 femtoseconds to 50 picoseconds, extremely precise and rapid machining can be ... | 11/21/2000 |
| 6127592 | Hydrous pyrolysis/oxidation process for in situ destruction of chlorinated hydrocarbon and fuel hydrocarbon contaminants in water and soil In situ hydrous pyrolysis/oxidation process is useful for in situ degradation of hydrocarbon water and soil contaminants. Fuel hydrocarbons, chlorinated hydrocarbons, polycyclic aromatic hydrocarbons, petroleum distillates and other organic contaminants p... | 10/03/2000 |
| 6115121 | Single and double superimposing interferometer systems Interferometers which can imprint a coherent delay on a broadband uncollimated beam are described. The delay value can be independent of incident ray angle, allowing interferometry using uncollimated beams from common extended sources such as lamps and fi... | 09/05/2000 |
| 6111332 | Combined passive bearing element/generator motor An electric machine includes a cylindrical rotor made up of an array of permanent magnets that provide a N-pole magnetic field of even order (where N=4, 6, 8, etc.). This array of permanent magnets has bars of identical permanent magnets made of dipole el... | 08/29/2000 |
| 6077671 | Method for isolating chromosomal DNA in preparation for hybridization in suspension A method is provided for detecting nucleic acid sequence aberrations using two immobilization steps. According to the method, a nucleic acid sequence aberration is detected by detecting nucleic acid sequences having both a first nucleic acid sequence type... | 06/20/2000 |
