Class / Patent application number | Description | Number of patent applications / Date published |
372005000 | SHORT WAVELENGTH LASER | 35 |
20080219297 | Linear x-ray laser generator - A small X-ray laser generator including a device ( | 09-11-2008 |
20080240171 | QUASI-CW UV LASER WITH LOW PEAK PULSE-POWER - Laser apparatus is disclosed in which fundamental-wavelength optical pulses delivered from a mode-locked laser resonator at a pulse-repetition frequency (PRF) are converted to harmonic-wavelength pulses in an optical delay loop. One example is disclosed in which the harmonic-wavelength pulses are delivered directly from the delay loop. Another example is disclosed in which the harmonic-wavelength pulses are divided by the delay loop into a number of temporally spaced-apart replicas thereof, and the delay loop delivers bursts of replicas of different one of the harmonic wavelength pulses at a burst-repetition frequency equal to or a multiple of the PRF of the resonator. | 10-02-2008 |
20080304522 | Catalyst laser - Provided is a laser based on the formation of an inverted population in an atom or ion of an element wherein at least one oxidation state of the element serves as a catalyst with atomic hydrogen to form states that are lower in energy than that of the n=1 state of having a binding energy of 13.6 eV. The catalytic reaction between atomic hydrogen and the catalyst pumps the exited states of catalyst or species caused by the ionization of the catalyst as the reaction releases energy with the formation of atomic-hydrogen states with binding energies lower than those of uncatalyzed atomic hydrogen. In an embodiment, the system comprises a source of catalyst and hydrogen gases and a means to cause a plasma of these gases. The plasma dissociates molecular hydrogen to atomic hydrogen and ionizes the source of catalyst to form the catalyst. The catalyst looses one or more electrons during the catalytic reaction, and the recombination of electrons with the ionized catalyst creates an inverted population. | 12-11-2008 |
20090080466 | COHERENT LIGHT SOURCE AND RECORDING AND REPRODUCTION DEVICE USING THE SAME - For performing hologram recording or reproduction, an oscillation wavelength half value width Δλ of a coherent light source | 03-26-2009 |
20090086769 | SEMICONDUCTOR DEVICE - A semiconductor device includes an optical semiconductor element, a package including a base made of a metal for mounting the optical semiconductor element, and a cap for encapsulating the optical semiconductor element and a gas by covering the package and the optical semiconductor element. The gas encapsulated with the package has an oxygen concentration not less than 15% and less than 30% and has a dew-point not less than −15° C. and not more than −5° C. | 04-02-2009 |
20090103575 | LASER DEVICE - A laser device, which includes an oscillator unit having a rectangular-solid-shaped housing containing a laser oscillator for generating and outputting a laser light; an amplifier unit having a rectangular-solid-shaped housing containing an amplifier that receives and amplifies the laser light to output; and, a group of optical elements including optical elements provided on a laser light path, wherein the laser device includes one or more amplifier units, and the oscillator and the amplifier units are arranged such that surfaces having a wide area other than a surface having a smallest area of a housing of the oscillator unit and a housing of at least one amplifier unit are next to and face each other, or such that surfaces having a wide area other than a surface having a smallest area of a housing of at least two amplifier units are next to and face each other. | 04-23-2009 |
20090185583 | UV and Visible Laser Systems - A laser system comprising: a light source generating light, said light source comprising at least two laser sources of different wavelengths; and a frequency converter operatively coupled to said light source to accept the light provided by said light source and to convert it to higher optical frequency such that said frequency converter is producing light output at the final output wavelength situated in the 150-775 nm range. | 07-23-2009 |
20090201952 | Method and apparatus for producing UV laser from all-solid-state system - An all-solid-state laser system produces coherent DUV radiation through a third or fourth harmonic generation. The fundamental wavelength is generated by a slave laser optically pumped by one or more light source(s) of high density array(s) and is stabilized by injecting optical seeds whose wavelength is rapidly swept to cover the fundamental wavelength. The pump effects are enhanced by a pump chamber that recycles unabsorbed pump light. The present invention enables DUV pulses with a width shorter than 1 ns and a repetition rate higher than 100 kHz. The output DUV wavelength is adjustable by selecting an appropriate seeder. | 08-13-2009 |
20090296744 | Laser Based Identification of Molecular Characteristics - Enantiomers are characterized, identified, synthesized and/or modified with a shaped laser pulse. In another aspect of the present invention, binary shaping and circular polarization are employed with a laser pulse. A further aspect of the present invention provides a quarter-wave plate in combination with one or more pulse shapers. | 12-03-2009 |
20090323733 | Blue laser and light cure polymers - Portable, battery charged, compact, laser instrument is presented for polymerizing light cure polymer that is used in civil engineering, aerospace engineering, medical and dental. Blue laser beam with wave length of 473 nm generated from semiconductor laser diode. | 12-31-2009 |
20100020832 | WAVELENGTH SELECTABLE LASER SYSTEMS AND RELATED METHODS - Laser systems and related methods are provided. In this regard, a representative laser system includes: a laser diode array that generates light; a first crystal having a cavity; an optical element operative to focus the generated light onto the first crystal such that the light generates a high-power circulating beam within the cavity; a second crystal positioned with respect to the first crystal such that the frequency of the high-power circulating beam is doubled; and a first coating applied to the first crystal and second coating applied to the second crystal, the first coating and the second coating being operative to cause at least a portion of the beam to be emitted within a particular wavelength range of the generated light. | 01-28-2010 |
20100027569 | UV DIODE-LASER MODULE WITH OPTICAL FIBER DELIVERY - A diode-laser module includes a diode-laser delivering radiation having a wavelength less than 450 nm and located a housing. Focusing optics focus the radiation into a single-mode optical fiber located in the housing. The radiation is focused through an end-cap bonded to the single-mode fiber and having a diameter greater than the core-diameter of the single-mode fiber. The length of the end-cap is selected cooperative with the focusing optics such that the beam intensity at the entrance end of the end-cap is below a level that would cause photodecomposition of any gaseous hydrocarbons in the housing. | 02-04-2010 |
20100091803 | Solid-state high-luminance far ultraviolet light emitting element including highly pure hexagonal boron nitride single crystal, solid-state laser, and solid-state light emitting apparatus - A solid-state far ultraviolet light emitting element is formed by a hexagonal boron nitride single crystal, excited by electron beam irradiation to emit far ultraviolet light having a maximum light emission peak in a far ultraviolet region at a wavelength of 235 nm or shorter. | 04-15-2010 |
20100135338 | Device for generation of tunable light pulses - A device for generating light pulses includes a seed laser source for generating input light pulses. An optical pre-amplifier having variable gain receives the input light pulses from the seed laser source. An optical power amplifier receives the light pulses from the optical pre-amplifier and amplifies and compresses the received light pulses. The light pulses are compressed in the optical power amplifier in such a manner that the pulse duration of the output light pulses of the optical power amplifier is tunable via adjusting the gain of the optical pre-amplifier. Wavelength-tunable light pulses are obtained by supplying the output light pulses of the optical power amplifier to a highly non-linear optical fiber. | 06-03-2010 |
20100166025 | High-power short-wavelength fiber laser device - A high-power, short-wavelength fiber laser device combines the known advantages and well-developed technology of long-wavelength fiber lasers with the concepts of both non-linear frequency doubling and non-linear sum frequency mixing to generate visible blue laser light at a wavelength of about 427 nm. The device includes a thulium fiber laser emitting light at a wavelength of 1900 nm, and an erbium fiber laser emitting light at a wavelength of 1550 nm. The light from each of the fiber lasers is frequency doubled in respective non-linear converters, resulting in respective light sources at 950 nm and 775 nm. The resulting 950 nm and 775 nm light is combined and mixed in a non-linear sum frequency mixer to produce a single short-wavelength beam of light having a wavelength of about 427 nm. | 07-01-2010 |
20100254412 | Phase Modulation In A Frequency-Converted Laser Source Comprising An External Optical Feedback Component - A method of controlling a frequency-converted laser source is provided where the laser source comprises a laser cavity, an external optical feedback component, a wavelength selective component, and a wavelength conversion device and the method comprises driving a phase section of the laser cavity with a phase control signal that comprises a modulation component having a modulation amplitude φ | 10-07-2010 |
20100272127 | LASER APPARATUS WITH FEEDBACK FOR DISPERSIVE OUTPUT TO A PIN-HOLE ELEMENT - There is provided a laser apparatus that includes a laser emitter configured to emit a laser emitter output beam. The apparatus includes a transmissive grating positioned with the laser emitter output beam incident upon the grating. The grating transmits a first order output beam. The apparatus includes a feedback element positioned with the first order emitted beam incident upon the feedback element. The feedback element returns a feedback element return beam incident upon the grating. The feedback element transmits a feedback element output beam at a feedback element output beam width. The laser apparatus includes a pin-hole element with a pin-hole positioned with the feedback element output beam incident upon the pin-hole. The feedback element output beam width is not greater than the pin-hole width. The pin-hole element transmits a pin-hole output beam at a pin-hole element output beam width less than the feedback element output beam width. | 10-28-2010 |
20120008647 | LIGHT EMITTING DEVICE - Disclosed is a white light emitting device including a semiconductor light emitting element configured to emit near ultraviolet light having a peak wavelength ranging from 380 to 410 nm, a first phosphor layer and a second phosphor layer. The first phosphor layer contains a blue-emitting phosphor configured to emit blue light by the near ultraviolet light, and a red-emitting phosphor activated by trivalent europium and configured to emit red light by the near ultraviolet light. The second phosphor layer contains a green-emitting phosphor configured to emit green light by the near ultraviolet light. The semiconductor light emitting element, the first phosphor layer and the second phosphor layer are laminated in this order to emit white light. | 01-12-2012 |
20120170599 | Remotely Induced Atmospheric Lasing - A laser pulse from an ultrashort pulse laser (USPL) is fired into the atmosphere. The USPL pulse is configured to generate a plasma filament at a predefined target in the atmosphere, in which free, or “seed,” electrons are generated by multi-photon or tunneling ionization of the air molecules in the filament. A second pulse is fired into the atmosphere to form a heater beam that impinges on the plasma filament and thermalizes the seed electrons within the plasma filament, leading to the collisional excitation of the electrons in the filament. The excited electrons collisionally excite various electronic and vibrational states of the air molecules in the filament, causing population inversions and lasing, e.g., exciting the C | 07-05-2012 |
20120177069 | LIGHT SOURCE FOR AIMING, TARGET ACQUISITION, COMMUNICATION AND TRACKING - A light generation and emission system and method is disclosed. A light generator generates light from a diode at a wavelength between 300 nm and 490 nm. A light beam forming subsystem forms the light to a directional light beam, and a controller that controls and directs the directional light beam to a target. The light generator can be suitably used for aiming, target acquisition, communication, identification, scanning, surveying, tracking, ignition and weapons operation. | 07-12-2012 |
20130028273 | BEAM GENERATOR - A beam generator for an aerial image generating apparatus includes a laser source for emitting a laser beam and a short wavelength beam source for generating a short wavelength beam by processing the laser beam such that the short wavelength beam is coherent with and has a wavelength shorter than that of the laser beam. A spectral unit includes a quartz plate and a spectral layer coated on a surface of the quartz plate. The spectral layer has a Brewster's angle greater than 70° with respect to the laser beam such that the short wavelength beam is reflected from the spectral unit without the laser beam, increasing the reflectivity of the shortwave beam while decreasing the reflectivity and absorptivity of the laser beam in the spectral unit. | 01-31-2013 |
20130044768 | ULTRAVIOLET FIBER LASER SYSTEM - Laser master oscillator—power amplifier system for generating high pulse energy, high average power laser pulses in the ultraviolet 191.25-201.25 nm and 243-246.25 nm spectral ranges, and in the visible 450-537.5 nm spectral range with controllable pulse duration and pulse repetition rate employ a master oscillator seed laser operating in the infra-red spectral range, and a single series connected chain of hybrid fiber—bulk crystalline amplifiers coupled to a non-linear frequency conversion unit to convert the laser pulses to the ultraviolet and visible spectral ranges. | 02-21-2013 |
20130170508 | WAVELENGTH DETECTOR AND WAVELENGTH CALIBRATION SYSTEM - the wavelength detector includes a diffusion element that diffuses the laser beam; a light collection optical system provided downstream from the diffusion element; a member, including an aperture, provided downstream from the light collection optical system; a discharge tube that is provided downstream from the member and that includes a cylindrical anode and a cylindrical cathode that each have a through-hole formed therein, and that is configured so that an electrical property between the anode and the cathode changes due to an opto-galvanic effect when a laser beam having a predetermined wavelength passes through the through-hole of the cathode in a state in which a DC voltage is applied to the anode; and a high-voltage DC power source. The discharge tube is disposed so that the laser beam that passes through the aperture passes through the through-hole of the cathode of the discharge tube without directly irradiating the cathode. | 07-04-2013 |
20130170509 | ULTRAVIOLET LASER DEVICE - An ultraviolet laser device equips a laser beam output unit that includes first, second and third amplifiers that output first through third infrared laser beams, and first through third optical systems into which the first through third infrared laser beams through which the first through third infrared laser beams are propagated. A wavelength conversion unit includes a fourth optical system into which the combined first through third laser beams are incident through which they are propagated. The first optical system wavelength converts and generates the first infrared laser beam to a predetermined harmonic wave as the first laser beam, the fourth optical system includes a first wavelength conversion element that generates an earlier stage ultraviolet laser beam between the predetermined harmonic wave and the second laser beam, and the second wavelength conversion element generates an ultraviolet laser beam between the earlier stage ultraviolet laser beam and the third laser beam. | 07-04-2013 |
20130215913 | METHOD AND APPARATUS FOR SYNCHRONIZED STARTING OF SOFT X-RAY LASERS - The invention can be used for setting up high energy and high average power soft x-ray laser equipments. The apparatus of the present invention is provided with a capillary discharge, wherein the spark gap ( | 08-22-2013 |
20130279526 | LASER APPARATUS - A laser apparatus may include a first laser light source configured to emit light with a first wavelength, a second laser light source including a titanium-sapphire laser device and a plurality of wavelength conversion elements and being configured to emit light with a second wavelength being one-fourth of a wavelength of light emitted from the titanium-sapphire laser device, and a wavelength conversion element configured in such a manner that the light with the first wavelength and the light with the second wavelength are incident thereon to emit light with a wavelength of about 193 nm corresponding to a sub frequency of the light with the first wavelength and the light with the second wavelength. | 10-24-2013 |
20130301662 | SLAB LASER AND AMPLIFIER - An economical slab laser for high power applications. The laser is a lamp driven slab design with face-to-face beam propagation and an end reflection that redirects the amplified radiation back out the input surface. Also presented is a side-to-side larger amplifier configuration, permitting very high average and peak powers due to the electrical efficiency of converting and getting energy into the crystal, optical extraction efficiency, and scalability of device architecture. Cavity filters adjacent to pump lamps convert the unusable UV portion of the pump lamp spectrum into light in the absorption band of the slab laser thereby increasing the overall pump efficiency. The angle of the end reflecting surface is changed to cause the exit beam to be at a different angle than the inlet beam, thereby eliminating the need to separate the beams external to the laser with the subsequent loss of power. | 11-14-2013 |
20130343410 | ULTRAVIOLET LASER DEVICE - An ultraviolet laser device comprises a laser beam output unit that outputs infra-red laser beams, and a wavelength conversion unit that wavelength converts the infra-red laser beams. The laser beam output unit comprises a first laser beam output unit that outputs a first infra-red laser beam whose wavelength is 1900-2000 nm, and a second laser beam output unit that outputs a second infra-red laser beam whose wavelength is 1000-1100 nm. The wavelength conversion unit comprises a first element series that the first infra-red light beam is incident upon and propagated through, and a second element series that the laser light propagated through the first element series and the second infra-red laser beam are incident upon, combined in, and propagated through, and constructed so that ultraviolet laser light is outputted, due to the first and second infra-red laser beams being wavelength converted by optical wavelength conversion elements. | 12-26-2013 |
20140010245 | LIGHT SOURCE FOR AIMING, TARGET ACQUISITION, COMMUNICATION AND TRACKING - A light generation and emission system and method is disclosed. A light generator generates light from a diode at a wavelength between 300 nm and 490 nm. A light beam forming subsystem forms the light to a directional light beam, and a controller that controls and directs the directional light beam to a target. The light generator can be suitably used for aiming, target acquisition, communication, identification, scanning, surveying, tracking, ignition and weapons operation. | 01-09-2014 |
20140204963 | 193NM Laser And Inspection System - A laser for generating an output wavelength of approximately 193.4 nm includes a fundamental laser, an optical parametric generator, a fourth harmonic generator, and a frequency mixing module. The optical parametric generator, which is coupled to the fundamental laser, can generate a down-converted signal. The fourth harmonic generator, which may be coupled to the optical parametric generator or the fundamental laser, can generate a fourth harmonic. The frequency mixing module, which is coupled to the optical parametric generator and the fourth harmonic generator, can generate a laser output at a frequency equal to a sum of the fourth harmonic and twice a frequency of the down-converted signal. | 07-24-2014 |
20140369367 | Structure For Electron-Beam Pumped Edge-Emitting Device and Methods for Producing Same - A semiconductor light emitting device includes a light guiding structure, a light emitting layer disposed within the light guiding structure, and a structure for discharging excess electric charge within the device. The device may be excited by an electron beam, as opposed to an optical beam, to create electron-hole pairs. The light emitting layer is configured for light generation without requiring a p-n junction, and is therefore not embedded within nor part of a p-n junction. Doping with p-type species is obviated, reducing device loss and permitting operation at a short wavelengths, such as below 300 nm. Various structures, such as a top-side cladding layer, are disclosed for discharging beam-induced charge. A single device may be operated with multiple electron beam pumps, either to enable a relatively thick active layer or to drive multiple separate active layers. Cooperatively curved end facets accommodate for possible off-axis resonance within the active region(s). | 12-18-2014 |
20150071313 | LASER WAVELENGTH CONVERSION APPARATUS - Disclosed is a laser wavelength conversion apparatus. The apparatus includes a focusing lens formed of birefringent material and configured to have same refractive index for an infrared laser beam and a green laser beam having different polarization direction and focus the infrared laser beam and the green laser beam without chromatic aberration, and a sum frequency generator configured to combine the infrared laser beam and the green laser beams focused by the focusing lens to generate an ultraviolet laser beam. The apparatus of the present invention can solve a problem due to chromatic aberration of the focusing lens, thereby improving wavelength conversion efficiency and beam quality. | 03-12-2015 |
20160013608 | Ultraviolet Triply-Optically-Pumped Atomic Lasers (TOPAL) | 01-14-2016 |
20160043524 | SLAB LASER AND AMPLIFIER - A laser for high power applications. The laser is a lamp driven slab design with a face to face beam propagation scheme and an end reflection that redirects the amplified radiation back out the same input surface. Also presented is a side to side larger amplifier configuration, permitting very high average and peak powers due to the electrical efficiency of absorbing energy into the crystal, optical extraction efficiency, and scalability of device architecture. Cavity filters adjacent to pump lamps convert the unusable UV portion of the pump lamp spectrum into light in the absorption band of the slab laser thereby increasing the overall pump efficiency. The angle of the end reflecting surface is changed to cause the exit beam to be at a different angle than the inlet beam, thereby eliminating the costly need to separate the beams external to the laser with the subsequent loss of power. | 02-11-2016 |
20160087392 | MULTIMODE FABRY-PEROT FIBER LASER - A multimode (“MM”) fiber oscillator is configured with MM active fiber doped with light emitters, a pair of MM passive fibers spliced to respective opposite ends of the MM active fiber, and a plurality of MM fiber Bragg gratings (“FBG”) written in respective cores of the MM passive fibers to provide a resonant cavity. The passive and active fibers are configured with respective cores which are dimensioned with respective diameters matching one another and substantially identical numerical apertures. | 03-24-2016 |