| Entries |
| Document | Title | Date |
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| 20080219317 | GAS-PURGED LASER SYSTEM AND METHOD THEREOF - A gas-purged laser system and method of gas-purging a laser system are disclosed. One embodiment of the laser system comprises an excimer refractive surgical laser system having a laser beam optical path configured to allow purging of a portion of a volume enclosing the laser beam optical path with a gas, and a gas generator, operable to generate the purging gas and provide the gas to the volume portion. The portion of the volume can be the entire volume enclosing the laser beam optical path or a selected portion thereof. The gas can be nitrogen gas and the gas generator can be a self-contained nitrogen generator as will be known to those having skill in the art. Embodiments can further comprise a controller for controlling the flow of purging gas in response to received signals representative of various parameters, such as temperature, oxygen level, pressure, humidity and flow rate. | 09-11-2008 |
| 20080267241 | Laser system - An apparatus/method which may comprise: a very high power line narrowed lithography laser light source which may comprise: a solid state seed laser system which may comprise: a pre-seed laser providing a pre-seed laser output; a fiber amplifier receiving the pre-seed laser output and providing an amplified seed laser pulse which may comprise: a pulse having a nominal wavelength outside of the DUV range; a frequency converter converting to essentially the wavelength of the amplifier gain medium; a first and a second gas discharge laser amplifier gain medium operating at different repetition rates from that of the seed laser output; a beam divider providing the amplifier gain mediums with output pulses from the seed laser; a beam combiner combining the outputs of each respective amplifier gain medium to provide a laser output light pulse beam having the pulse repetition rate of the solid state seed laser system. | 10-30-2008 |
| 20080285613 | COLPITTS RF POWER OSCILLATOR FOR A GAS DISCHARGE LASER - A Colpitts oscillator that includes an RF-excited gas discharge laser tube as the feedback pi-network of the Colpitts oscillator. | 11-20-2008 |
| 20090067467 | Pre-ionizer for pulsed gas-discharge laser | 03-12-2009 |
| 20090067468 | Laser system - A method/apparatus may comprise a laser light source which may comprise a solid state seed laser system producing a seed laser output having a nominal center wavelength at a pulse repetition rate; a first and a second gas discharge laser amplifier gain medium each operating at a pulse repetition rate less than that of the seed laser system; a beam divider providing each of the respective first and second amplifier gain mediums with seed laser output pulses; a frequency converter modifying the nominal center wavelength of the output of the seed laser to essentially the nominal center wavelength of the amplifier gain medium; a beam combiner combining the outputs of the respective amplifier gain mediums to provide a light source output having the pulse repetition rate of the seed laser; a coherence buster operating on either or both of the output of the seed laser or amplifier gain mediums. | 03-12-2009 |
| 20090110019 | TARGET MARKING SYSTEM HAVING A GAS LASER ASSEMBLY AND A THERMAL IMAGER - A handheld target marker is provided, wherein the target marker includes a housing retaining a gas laser, a collimating or focusing lens, a driver and a power supply. The laser produces a thermal infrared beam which can be selectively directed to impinge upon a target. The impinging beam is viewable by a thermal imager. The handheld target marker operates at ambient temperatures and incorporates the driver and power supply necessary for operation of the laser, wherein the beam can be pulsed for enhancing imaging on the thermal imager. | 04-30-2009 |
| 20090116530 | High power seed/amplifier laser system with beam shaping intermediate the seed and amplifier - An apparatus and method of operation for a high power broad band elongated thin beam laser annealing light source, which may comprise a gas discharge seed laser oscillator having a resonance cavity, providing a seed laser output pulse; a gas discharge amplifier laser amplifying the seed laser output pulse to provide an amplified seed laser pulse output; a divergence correcting multi-optical element optical assembly intermediate the seed laser and the amplifier laser. The divergence correcting optical assembly may adjust the size and/or shape of the seed laser output pulse within a discharge region of the amplifier laser in order to adjust an output parameter of the amplified seed laser pulse output. The divergence correcting optical assembly may comprise a telescope with an adjustable focus. The adjustable telescope may comprise an active feedback-controlled actuator based upon a sensed parameter of the amplified seed laser output from the amplifier laser. | 05-07-2009 |
| 20090316746 | SLAB TYPE LASER APPARATUS - A slab type laser apparatus has a slab type gas laser medium part formed in a region defined by a pair of electrode flat plates oppositely disposed in parallel with each other in a space to be filled with a gas laser medium which is excited by high-frequency electric power. The apparatus includes an oscillator part including a pair of resonator mirrors oppositely disposed with a part of the gas laser medium part in between, and for amplifying a laser beam to have predetermined light intensity to emit the laser beam, and the amplifier part including a plurality of return mirrors oppositely disposed with a part of the gas laser medium part in between. The incident laser beam goes and returns plural times between the return mirrors, and the laser beam is amplified to have predetermined power. | 12-24-2009 |
| 20100054295 | High pulse repetition rate gas discharge laser - A pulsed gas discharge laser operating at an output laser pulse repetition rate of greater than 4 kHz and a method of operating same is disclosed which may comprise a high voltage electrode having a longitudinal extent; a main insulator electrically insulating the high voltage electrode from a grounded gas discharge chamber; a preionizer longitudinally extending along at least a portion of the longitudinal extent of the high voltage electrode; a preionization shim integral with the electrode extending toward the preionizer. The preionizer may be formed integrally with the main insulator. The preionization shim may substantially cover the gap between the electrode and the preionizer. The apparatus and method may comprise an aerodynamic fairing attached to the high voltage electrode to present an aerodynamically smooth surface to the gas flow. | 03-04-2010 |
| 20100074295 | Immersion lithography laser light source with pulse stretcher - An apparatus and method are disclosed which may comprise a pulsed gas discharge laser lithography light source which may comprise a seed laser portion providing a seed laser output light beam of seed pulses; an amplifier portion receiving the seed laser output light beam and amplifying the optical intensity of each seed pulse to provide a high power laser system output light beam of output pulses; the amplifier portion may comprise a ring power amplifier comprising amplifier portion injection optics comprising at least one beam expanding prism, a beam reverser and an input/output coupler; the beam expansion optics and the output coupler may be mounted on an optics assembly with the beam expansion optics rigidly mounted with respect to the optics assembly and the input/output coupler mounted for relative movement with respect to the optics assembly for optical alignment purposes. | 03-25-2010 |
| 20100103974 | THERMAL DISTORTION COMPENSATION FOR LASER MIRRORS - A laser mirror assembly is disclosed with improved pointing stability. An elongated mirror includes a concave reflecting portion. A pair of elongated planar portions extend parallel to the concave reflecting portion on either side thereof. The planar portions are stepped down from the reflecting portion. The mirror is formed from copper. A pair of stainless steel strips are connected to planar portions. The bimetallic effect between the copper mirror and the stainless steel strips operates to counteract the warping of the mirror due to differential heating effects which arise during operation. In an alternate embodiment, a pair of aluminum strips are mounted on the rear surface of the mirror. | 04-29-2010 |
| 20100189156 | RADIO FREQUENCY EXCITED GAS LASER SOURCE - There is described a gas laser comprising a pair of substantially mutually parallel and opposed electrodes ( | 07-29-2010 |
| 20110007772 | Phase-matched Generation of Coherent Soft and Hard X-rays Using IR Lasers - Phase-matched high-order harmonic generation of soft and hard X-rays is accomplished using infrared driving lasers in a high-pressure non-linear medium. The pressure of the non-linear medium is increased to multi-atmospheres and a mid-IR (or higher) laser device provides the driving pulse. Based on this scaling, also a general method for global optimization of the flux of phase-matched high-order harmonic generation at a desired wavelength is designed. | 01-13-2011 |
| 20110058588 | Drive laser for EUV light source - A device is described herein which may comprise an oscillator having an oscillator cavity length, L | 03-10-2011 |
| 20110085580 | PRE-IONIZATION METHOD FOR CO2 GAS-DISCHARGE LASER - An RF powered CO | 04-14-2011 |
| 20110182319 | CO2 LASER OUTPUT POWER CONTROL DURING WARM-UP | 07-28-2011 |
| 20110194580 | Line Narrowing Module - An apparatus is disclosed which may comprise a grating receiving light, a first prism moveable to coarsely select an angle of incidence of the light on the grating, and a second prism moveable to finely select an angle of incidence of the light on the grating. In one application, the apparatus may be used as a line narrowing module for a laser light source. | 08-11-2011 |
| 20110194581 | ARRANGEMENT FOR RF POWER DELIVERY TO A GAS DISCHARGE LASER WITH CASCADED TRANSMISSION LINE SECTIONS - RF power is transmitted to a CO | 08-11-2011 |
| 20110274132 | GAS LASER OSCILLATOR - An oscillator housing includes a main body unit that is shaped into a frame and formed of a metallic material and a cover unit that is formed of a metallic material to cover openings of the main body unit, and has an outer wall that has an arc cross section perpendicular to the optical axis and extends in the optical axis direction and side walls that are connected to the both ends of the outer wall in the optical axis direction. When the cover unit is fixed to the main body unit with a fixing member, the outer wall having an arc shape is configured such that force is generated in the height direction towards the outside of the oscillator housing on the connecting portion of the cover unit with the main body unit. | 11-10-2011 |
| 20120033703 | HERMETICALLY-SEALED RF FEED-THROUGH WITH INTEGRATED CAPACITOR - A carbon-dioxide (CO | 02-09-2012 |
| 20120087386 | LASER SYSTEM - An apparatus/method may comprise a line narrowed pulsed lithography laser light source which may comprise: a seed pulse providing laser system which may comprise: a first pulsed seed laser producing seed pulses at a rate of X kHz; a second pulsed seed laser producing seed pulses at a rate of X kHz; an amplification system which may comprise: a first amplifier gain system which may comprise a first and a second pulsed gas discharge amplifier gain medium, each with a nominal center wavelength in the UV range, and each operating at ½X kHz on output pulses from the first seed laser; a second amplifier gain system which may comprise a first and a second pulsed amplifier gain medium, each with a nominal center wavelength in the UV range, and each operating at ½X kHz on output pulses from the second seed laser. | 04-12-2012 |
| 20120120980 | MOLECULAR HYDRINO LASER - This invention comprises a laser based on hydrogen molecules designated H | 05-17-2012 |
| 20120189031 | GAS LASER DISCHARGE PRE-IONIZATION USING A SIMMER-DISCHARGE - A gas discharge laser including a lasing gas between discharge electrodes and has a power supply for generating RF pulses to be delivered to the electrodes of the laser for energizing the lasing gas. A sequence of RF simmer pulses is delivered to the electrodes. The simmer pulses create sufficient free electrons in the lasing gas to facilitate subsequent ignition of the discharge while not causing laser action. RF lasing pulses having a longer duration than the simmer pulses are delivered to the electrodes to ignite the discharge and provide corresponding laser output pulses. Delivery of the simmer pulses is suspended during delivery of the lasing pulses to avoid amplitude or pulse-width modulation of the laser output pulses by the simmer pulses. | 07-26-2012 |
| 20120236895 | SPLIT RING RESONATOR CREATING A PHOTONIC METAMATERIAL - A split ring-resonator includes a substrate, an inner-trench or cavity formed into the substrate, the inner trench or cavity including a split, and an outer trench or cavity formed into the substrate around the inner trench or cavity, the outer trench or cavity including another split disposed at an opposite end of the split in the inner trench or cavity, wherein the inner trench or cavity and the outer trench or cavity are configured to receive an electrically conductive gas and/or plasma to form a split-ring resonator, | 09-20-2012 |
| 20120236896 | ATMOSPHERE STABILIZATION METHOD AND LASER PROCESSING APPARATUS - Disruption of a gas atmosphere does not occur when a substrate is rotated 90° after it is carried into a laser processing apparatus. The substrate is carried such that a gas ejection port is positioned near a midportion of a first side of the substrate. The substrate is linearly moved to bring a center of the substrate near the gas ejection port and the substrate is horizontally rotated 90° about the center thereof. Because an edge portion of the gas ejection port does not go beyond a seal cover during rotation, disruption of the gas atmosphere that occurs due to the escaping of the gas does not occur. | 09-20-2012 |
| 20120281728 | WAVEGUIDE CO2 LASER WITH MUTIPLY FOLDED RESONATOR - A gas-discharge waveguide CO | 11-08-2012 |
| 20130003772 | Molecular gas laser - The closed cycle solid state optically pumped gas hybrid (chemical recovery) system utilizes a laser diode excited solid state, fiber or bulk, laser as a pump for a molecular gas, or gas mix, medium. The existence of efficient high power laser diode excited solid state fiber or bulk lasers, output spectrally matched to suitable principle and excited level 1st and 2nd overtones of relevant gases, is the enabling system technology. The utilization of such in combination with suitable gases introduces a range of viable, in principle sourcing on laser diodes and thus effectively laser diode pumped, gas laser systems with access to the ˜3.5 μm to ˜5.2 μm and ˜9 μm to ˜11 μm spectral region. Continuous wave or pulsed operation, with significant energy capability courtesy of solid state storage, is admitted. | 01-03-2013 |
| 20130003773 | System and Method for Automatic Gas Optimization in a Two-Chamber Gas Discharge Laser System - A system and method for automatically performing gas optimization after a refill in the chambers of a two chamber gas discharge laser such as an excimer laser is disclosed. The laser is continuously fired at a low power output, and the gas in the amplifier laser chamber bled if necessary until the discharge voltage meets or exceeds a minimum value without dropping the pressure below a minimum value. The power output is increased, and the gas bled again if necessary until the voltage and pressure meet or exceed the minimum values. The laser is then fired in a burst pattern that approximates the expected firing of the laser in operation, and the gas bled if necessary until the discharge voltage meets or exceeds the minimum value and the output energy meets or exceeds a minimum value, again without dropping the pressure in the chamber below the minimum value. Once the minimum values are provided, the process runs quickly without manual interaction. | 01-03-2013 |
| 20130100979 | HIGH-POWER LASER FOCUSING APPARATUS WITH PRESSURIZED HOUSING AND AERODYNAMIC WINDOW - A high-powered laser beam focusing apparatus for use in laser welding applications that includes a laser having a beam delivery fiber for generating a laser beam and a housing adapted to receive the beam delivery fiber. The housing further includes a first internal chamber adapted to receive a flow of pressurized gas; a second internal chamber; and an aerodynamic window positioned between the first chamber and the second chamber. | 04-25-2013 |
| 20130114637 | METHOD AND DEVICE FOR OBTAINING AN OPTICAL DISCHARGE IN A GAS - The invention relates to the field of laser physics and laser technology and can be used in the development and creation of plasma-chemical systems based on lasers. | 05-09-2013 |
| 20130202006 | GAS FILLED HOLLOW FIBER LASER - Apparatus, systems, and methods using an optically pumped gas filled hollow fiber laser can be implemented in a variety of applications. In various embodiments, operation of an optically pumped gas filled hollow fiber laser is based on population inversion in the gas. Additional apparatus, systems, and methods are disclosed. | 08-08-2013 |
| 20130235893 | TRANSMISSIVE OPTICAL DEVICE, LASER CHAMBER, AMPLIFIER STAGE LASER DEVICE, OSCILLATION STAGE LASER DEVICE AND LASER APPARATUS - A transmissive optical device includes a crystal part including a c-axis in a crystal structure. The crystal part is configured to include a surface to receive a laser beam. The c-axis is arranged to be inclined relative to an incident direction of the laser beam in a plane of incidence of the laser beam. | 09-12-2013 |
| 20130308673 | SLAB LASER - In a slab laser, a gas mixture containing carbon dioxide CO | 11-21-2013 |
| 20140185642 | Catalytic Generation of Metastable Singlet Oxygen - Singlet oxygen metastables can be formed. A catalytic coating is formed on an interior surface of a flow reactor, and an oxygen containing species is flowed into the flow reactor to produce singlet oxygen metastables by a chemical reaction in the presence of the catalytic coating. | 07-03-2014 |
| 20140233597 | Laser Device - The invention relates to a laser device comprising at least three linear laser gain volumes ( | 08-21-2014 |
| 20140294033 | LASER - A laser includes a total reflective mirror, an output mirror, a discharge lamp, and an active laser medium. The total reflective mirror, the output mirror, and the discharge lamp define a resonant cavity. The active laser medium is filled in the resonant cavity. The total reflective mirror includes a body, a metal film, and at least one microstructure. Each of the at least one microstructure is a step structure. The step structure includes a plurality of cylinders stacked with each other with respect to their diameters. Both the height and the diameter of the cylinders are in a range from about 0.5λ to about 2λ, while λ is a working wavelength of the laser. | 10-02-2014 |
| 20140328364 | LASER APPARATUS - When a chamber of an oscillator and one or more amplifiers is to be replaced at the timing when a predetermined period elapses, one of the chambers of the oscillator and the amplifiers having a low allowable deterioration limit is detached and this chamber is attached in place of one of the chambers of the oscillator and the amplifiers other than the one having the low allowable deterioration limit. Thus, the chamber which has been used in one of the oscillator and amplifiers having a low allowable deterioration limit and has not reached the limit of deterioration is reused in one of the oscillator and the amplifiers other than the one having the low allowable deterioration limit. This enables efficient use of oscillator and amplifier chambers in a multistage amplification laser apparatus, minimizing the labor and parts consumed for replacement thereof. | 11-06-2014 |
| 20140334514 | CO2 LASER DEVICE AND CO2 LASER PROCESSING DEVICE | 11-13-2014 |
| 20140348198 | LASER WITH IMPROVED RADIO FREQUENCY ENERGY DISTRIBUTION - A carbon dioxide slab laser includes a top electrode and a bottom electrode. The top electrode has a socket formed at a geometric center and receives a contact ring in the recess of the socket. The contact ring includes radially inward extending biasing fingers. The biasing fingers contact a radio frequency (RF) energy feed through plug and engages the outer wall of the plug and retains it in the socket. The fingers disperse RF energy radially outward to the laser and provide for more even energy distribution that allows for more power. Grounding is also improved through grounding bars spaced apart longitudinally along the length of the bottom electrode. The transverse extending bars include contact elements having spaced apart fingers along the length of the contact element and providing multiple ground points to prevent focusing at a single grounding point. | 11-27-2014 |
| 20150357785 | GAS LASER DEVICE - A gas laser device includes a housing for enclosing a laser gas. The housing includes a main body having a frame-like structure with openings formed on both sides thereof, and a pair of cover members detachably attached to cover each of the openings. The main body is provided with an upper plate and a lower plate each extending along the optical axis of the laser light, and a pair of side plates respectively connecting both ends of the upper plate and the lower plate. Each of the cover members includes a partially cylindrical member having an arc-like cross-sectional shape in a plane perpendicular to the optical axis and extending along the optical axis, and a pair of side wall members occluding both ends of the partially cylindrical member. The partially cylindrical member has a bellows portion molded into a shape having peaks and valleys each alternating along the optical axis. | 12-10-2015 |
| 20160094004 | LASER OSCILLATOR FOR IMPROVING BEAM QUALITY - A laser oscillator includes a discharge tube having a discharge area in which laser gas is excited and an output coupler and a rear mirror respectively arranged at both sides of the discharge tube. A first coating material having first reflectance is stacked as a dielectric multilayer on a first area including a radial center portion of a surface of the output coupler, which faces the discharge area, and a second coating material having second reflectance higher than the first reflectance is stacked as a dielectric multilayer on a second area around the first area. | 03-31-2016 |
| 20160172817 | PRELIMINARY IONIZATION DISCHARGE DEVICE AND LASER APPARATUS | 06-16-2016 |
