| Patent Number |
Title Of Patent |
Date Issued |
| 6931037 |
Diode pumped, multi axial mode intracavity doubled laser |
August 16, 2005 |
| A diode pumped, multi axial mode, intracavity doubled, intracavity tripled laser, includes at least two resonator mirrors defining a resonator cavity. A laser crystal and a doubling crystal are positioned in the resonator cavity. A tripling crystal is also positioned in the resonator |
| 6922419 |
Long pulse vanadate laser |
July 26, 2005 |
| A diode-pumped solid-state laser has been invented that provides long Q-switched pulses at high repetition rate with high stability. The laser incorporates Nd:YVO.sub.4 as the gain medium. |
| 6734387 |
Method and apparatus for micro-machining of articles that include polymeric materials |
May 11, 2004 |
| A micro-machining apparatus includes a mode-locked, infrared laser system with a high reflector and an output coupler that define an oscillator cavity which produces an output beam. A gain medium and a mode locking device are positioned in the oscillator cavity. A diode pump source p |
| 6697390 |
Extended lifetime harmonic generator |
February 24, 2004 |
| A laser system includes a high reflector and an output coupler that define a laser oscillator, which produces a fundamental beam. A harmonic generator is positioned to receive at least a portion of the fundamental beam and produce a harmonic beam. The harmonic generator is configured to |
| 6504858 |
Lasers with low doped gain medium |
January 7, 2003 |
| A high power, diode pumped laser has a Nd:YVO.sub.4 gain media. Scaling to higher powers is achieved with the use of a low doped gain media, increasing the length of the gain media as well as increasing the pump volume. Passive cooling is extended to output powers of 10 W or greater. |
| 6462878 |
Double chirped mirror |
October 8, 2002 |
| The invention is a double chirped mirror and a method of constructing a double chirped mirror for a frequency range of electromagnetic radiation, comprising specifying a design including a plurality of layers, the plurality of layers being transparent to the electromagnetic radiation and |
| 6421573 |
Quasi-continuous wave lithography apparatus and method |
July 16, 2002 |
| A lithography system for providing interconnections of integrated circuits on a substrate includes a laser system with a high reflector and an output coupler that define an oscillator cavity. A gain medium and a mode locking device are positioned in the oscillator cavity. A diode pump so |
| 6417955 |
Stack pumped vanadate amplifier |
July 9, 2002 |
| An amplifier uses a two-dimensional array of cw diodes to produce a pump beam. A coupler is positioned to receive the pump beam. The coupler reduces a cross-sectional dimension of the pump beam and creates a modified pump beam. A vanadate gain medium is positioned adjacent to the cou |
| 6389198 |
Photonic crystal fiber system for sub-picosecond pulses |
May 14, 2002 |
| Fiber delivery systems are desirable to provide convenient delivery of an output beam from a laser system to a target distanced from the source. For ultra-short pulse lasers, a limiting factor in fiber delivery is the dispersion of the optical fiber. A fiber delivery system for ultra-sho |
| 6373565 |
Method and apparatus to detect a flaw in a surface of an article |
April 16, 2002 |
| An inspection apparatus includes a laser system. The laser system has a high reflector and an output coupler that define an oscillator cavity which produces an output beam. A gain medium and a mode locking device are positioned in the oscillator cavity. A diode pump source produces a pum |
| 6314116 |
Single resonator for simultaneous multiple single-frequency wavelengths |
November 6, 2001 |
| Disclosed is a laser system including a high reflector and an output coupler defining a resonator; a gain medium positioned in the resonator that produces optical gain at more than two desired wavelengths; a coarse selection system, positioned in the resonator and coupled to the gain |
| 6301049 |
Double chirped mirror |
October 9, 2001 |
| The invention is a double chirped mirror and a method of constructing a double chirped mirror for a frequency range of electromagnetic radiation, comprising specifying a design including a plurality of layers, the plurality of layers being transparent to the electromagnetic radiation and |
| 6287298 |
Diode pumped, multi axial mode intracavity doubled laser |
September 11, 2001 |
| A diode pumped, multi axial mode, intracavity doubled laser has at least two resonator mirrors that define a resonator cavity. A Nd:YVO.sub.4 laser crystal and a LBO doubling crystal are positioned in the resonator cavity. A diode pump source supplies a pump beam to the laser crystal and |
| 6246706 |
Laser writing method and apparatus |
June 12, 2001 |
| A laser writing system includes a high reflector and an output coupler that define an oscillator cavity. A gain medium and a mode locking device are positioned in the oscillator cavity. A diode pump source produces a pump beam that is incident on the gain medium and an output beam is pro |
| 6236779 |
Photonic crystal fiber system for sub-picosecond pulses |
May 22, 2001 |
| A system is provided that delivers sub-picosecond pulses. The system includes a source that produces an output beam of sub-picosecond pulses at a wavelength no greater than 1.27 microns. A photonic crystal fiber is coupled to the source to receive the output beam. The photonic crystal |
| 6185235 |
Lasers with low doped gain medium |
February 6, 2001 |
| A high power, diode pumped laser has a Nd:YVO.sub.4 gain media. Scaling to higher powers is achieved with the use of a low doped gain media, increasing the length of the gain media as well as increasing the pump volume. Passive cooling is extended to output powers of 10 W or greater . |
| 6036321 |
Crystal isolation housing |
March 14, 2000 |
| The crystal isolation system of the present invention protects a laser crystal from environmental factors such as humidity and dust. A crystal is placed in a housing which has two ports in it, and flexible tubes are placed in each port. Cap pieces cover the ends of the tubes and prevent |
| 6021140 |
Polarization based mode-locking of a laser |
February 1, 2000 |
| The present invention is a system and method for mode-locking a laser, comprising reversibly converting radiation in the laser at a fundamental frequency into radiation at a second harmonic frequency, discriminating the radiation at the fundamental frequency using a polarization of the |
| 6016323 |
Broadly tunable single longitudinal mode output produced from multi-longitudinal mode seed sourc |
January 18, 2000 |
| An oscillator system is provided which produces a single mode output from a multimode seed beam and a multimode optical power source. The seed source employed in the oscillator system produces a multimode seed beam that is used to injection seed a multimode optical power source. The opti |
| 5999544 |
Diode pumped, fiber coupled laser with depolarized pump beam |
December 7, 1999 |
| A laser or laser amplifier apparatus has a diode pump source producing a polarized pump beam. A laser head includes a gain medium that produces an output beam. One or more optical fibers are coupled to the diode pump source and deliver the pump beam to the laser head. A depolarization |
| 5991317 |
Retinal photocoagulator including diode pumped, multi-axial mode intracavity doubled laser |
November 23, 1999 |
| A diode pumped, multi axial mode, intracavity doubled, intracavity tripled laser, includes at least two resonator mirrors defining a resonator cavity. A laser crystal and a doubling crystal are positioned in the resonator cavity. A tripling crystal is also positioned in the resonator |
| 5892783 |
Laser with temperature controller positioned in laser head |
April 6, 1999 |
| A laser includes a laser head and a power supply. At least two resonator mirrors define a resonator cavity. A gain medium is positioned in the resonator cavity. A temperature controller is positioned in the laser head and is coupled to the gain medium. The temperature controller maintain |
| 5889800 |
Broadly tunable single longitudinal mode output produced from multi-longitudinal mode seed sourc |
March 30, 1999 |
| An oscillator system is provided which produces a single mode output from a multimode seed beam and a multimode optical power source. The seed source employed in the oscillator system produces a multimode seed beam that is used to injection seed a multimode optical power source. The opti |
| 5849370 |
Method for producing low scatter, low loss, environmentally stable dielectric coatings |
December 15, 1998 |
| A method for creating a dielectric coating on a substrate produces near bulk density metal oxide coatings with extremely low surface roughness, microstructure and low defect density. The coatings have a low scatter of less than 50 ppm, low loss of less than 100 ppm, and an environmental |
| 5812583 |
Diode pumped, fiber coupled laser with depolarized pump beam |
September 22, 1998 |
| A laser or laser amplifier apparatus has a diode pump source producing a polarized pump beam. A laser head includes a gain medium that produces an output beam. One or more optical fibers are coupled to the diode pump source and deliver the pump beam to the laser head. A depolarization |
| 5812308 |
Mode locked laser and amplifier |
September 22, 1998 |
| A laser system has a high reflector and an output coupler defining a laser cavity with an optical axis. Included is a pump source, a mode-locking apparatus and at least one fold mirror positioned in the laser cavity along the optical axis. A gain media is positioned adjacent to the fold |
| 5696780 |
Frequency conversion system |
December 9, 1997 |
| A multi-axial mode frequency conversion system includes two resonators. At least two resonator mirrors define a first resonator cavity. A gain medium is positioned in the first resonator cavity. A pump source supplies energy to the gain medium. The first resonator cavity produces a first |
| 5671244 |
Mirror mount |
September 23, 1997 |
| A mirror mount assembly has a base plate positioned at one end of a laser resonator, and a movable plate spaced from and positioned substantially parallel to the base plate. One or more elastic springs are connected between the base plate and the moveable plate to provide tip and tilt of |
| 5651020 |
Confocal-to-concentric diode pumped laser |
July 22, 1997 |
| A high power diode pumped laser is disclosed which has at least one resonator mirror and an output coupler. At least one laser crystal with strong thermal focussing properties is included. The laser includes at least one diode pump source supplying a pump beam to the laser crystal, p |
| 5638397 |
Confocal-to-concentric diode pumped laser |
June 10, 1997 |
| A high power diode pumped, acousto-optically Q-switched Nd:YVO.sub.4 laser includes at least one resonator mirror and an output coupler defining a resonator cavity. At least one acousto-optic Q-switch device and at least one laser crystal, with strong thermal focussing properties, are |
| 5638388 |
Diode pumped, multi axial mode intracavity doubled laser |
June 10, 1997 |
| A diode pumped, multiaxial mode, intracavity frequency doubled laser resonator has high amplitude stability, meaning that the percent root mean square noise (%RMS) of the doubled output beam power is low. A diode pump source supplies a pump beam to a laser crystal positioned in a resonat |
| 5625491 |
Broad band polarizing beam splitter |
April 29, 1997 |
| A broad band polarizing beam splitter includes a first prism, including an incident beam surface, and an interface surface. A second prism is also included with an interface surface. The second prism is positioned adjacent to the first prism with the interface surfaces of the first and |
| 5608742 |
Diode pumped, fiber coupled laser with depolarized pump beam |
March 4, 1997 |
| A laser or laser amplifier apparatus has a diode pump source producing a polarized pump beam. A laser head includes a gain medium that produces an output beam. One or more optical fibers are coupled to the diode pump source and deliver the pump beam to the laser head. A depolarization |
| 5590149 |
Mirror mount |
December 31, 1996 |
| A mirror mount assembly has a base plate positioned at one end of a laser resonator, and a movable plate spaced from and positioned substantially parallel to the base plate. One or more elastic springs are connected between the base plate and the moveable plate to provide tip and tilt of |
| 5579422 |
Apparatus for coupling a multiple emitter laser diode to a multimode optical fiber |
November 26, 1996 |
| A laser system includes a laser diode source with a plurality of output facets. The laser diode source produces a divergent output along an emission path. A microlens is optically coupled to the diode source. The microlens receives the divergent output along the emission path and mod |
| 5577060 |
Diode pumped laser using crystals with strong thermal focussing |
November 19, 1996 |
| A diode pumped laser includes a resonator mirror and an output coupler, defining a laser resonator with a resonator optical axis. A strong thermal lens laser crystal with a TEM.sub.00 mode diameter is mounted in the resonator along the resonator optical axis. A diode pump source supplies |
| 5577058 |
Broadly tunable single longitudinal mode output produced from multi longitudinal mode seed sourc |
November 19, 1996 |
| An oscillator system which produces a single mode output from a multimode seed beam and a multimode optical power source. The seed source employed in the oscillator system produces a multimode seed beam that is used to injection seed a multimode optical power source. The optical power so |
| 5561547 |
Thermal lens of controlled ellipicity |
October 1, 1996 |
| The ellipticity of a thermal lens is controlled in a diode-pumped anisotropic crystal, such as Nd:YVO4. The crystal has two opposing optical end faces through which a pump beam and an output beam pass. The crystal also has opposing "c" axis crystal faces normal to a "c" axis of the c |
| 5524015 |
Optical noise reduction circuitry for laser systems |
June 4, 1996 |
| A servo controlled laser system is provided which provides a laser output beam having reduced optical noise. The laser system may be any type of laser system and preferably is an ion laser system. The servo controlled laser system includes a laser head providing a laser output beam and a |
| 5477378 |
Multiple crystal non-linear frequency conversion apparatus |
December 19, 1995 |
| A non-linear frequency conversion device is tunable over a wide tuning range. An input source provides a first input beam with a frequency .lambda.1. A first frequency conversion crystal has an input beam face that is cut at a phase matching angle .theta.1 and is positioned on a firs |
| 5457707 |
Master optical parametric oscillator/power optical parametric oscillator |
October 10, 1995 |
| A tunable laser system having a wide tunable range, and narrow line widths, achieves relatively high output powers. The tunable laser system includes a master optical parametric oscillator which generates a seed beam, and a power optical parametric oscillator which is responsive to the s |
| 5446749 |
Diode pumped, multi axial mode, intracavity doubled laser |
August 29, 1995 |
| A diode pumped, multiaxial mode, intracavity frequency doubled laser resonator has high amplitude stability, meaning that the percent root mean square noise (% RMS) of the doubled output beam power is low. A diode pump source supplies a pump beam to a laser crystal positioned in a resona |
| 5442648 |
Noise rejection circuitry and laser system using the same |
August 15, 1995 |
| A controller including a closed loop servo system for a laser, or other entity is capable of substantial reductions in predictable, periodic noise such as the line noise induced by the source of alternating current electrical power, and in random noise as well. The servo circuit includes |
| 5436990 |
Apparatus for coupling a multiple emitter laser diode to a multimode optical fiber |
July 25, 1995 |
| A small diameter multimode optical fiber with a low numerical aperture (i.e., 0.1) is used as a microlens to collimate the output emissions of a laser diode before butt coupling the output of the laser diode to an optical fiber. The optical fiber used as the microlens is chosen such that |
| 5412683 |
Confocal diode pumped laser |
May 2, 1995 |
| A high efficiency, diode pumped laser includes a resonator mirror and an output coupler which define a nearly confocal resonator. Positioned in the resonator is a laser crystal. A diode pump source supplies a pump beam to the laser crystal and produces an output beam. A strong thermal le |
| 5410559 |
Diode pumped laser with strong thermal lens crystal |
April 25, 1995 |
| A high power, highly efficient laser that produces a polarized, round diffraction limited gaussian beam is disclosed. A strong thermal lens laser crystal with controlled ellipticity, is mounted in a laserhead and pumped by a fiber-bundle-coupled diode source. The pump beam diameter in |
| 5390211 |
Optical parametric oscillator with unstable resonator |
February 14, 1995 |
| A high powered OPO system which produces a substantially collimated, low divergence output beam is based on the use of an unstable resonator. An optical parametric gain medium, such as beta-barium borate (.beta.-BBO), lithium tri-borate (LBO), cesium borate (CBO), potasium tri-phosphate |
| 5367529 |
Apparatus and method for improved time synchronization of pulsed laser systems |
November 22, 1994 |
| Phase-locking means are provided for synchronizing the pulse timing of two (or more) passively mode-locked pulsed lasers. The phase-locking is carried out at a frequency much higher than that of the fundamental repetition rate of the lasers because it results in much higher sensitivi |
| 5365366 |
Synchronously pumped sub-picosecond optical parametric oscillator |
November 15, 1994 |
| A synchronously pumped optical parametric oscillator (OPO) using a temperature-tuned 90.degree. phase matched LBO crystal is disclosed which provides a broad selection of output wavelengths. A Ti:Sapphire pump source having a cavity length matched to the OPO cavity length pumps a cav |
| 5353293 |
Hybrid cooled ion laser |
October 4, 1994 |
| A high output, compact laser having a multi-line spectral output and an internal mirror, integral resonator design is disclosed. The laser structure comprises a laser tube containing a resonant cavity, an output coupler and an active medium. A power supply and coolant assembly are co |
