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| Number | Title | Issue Date |
| 8064488 | Mid-IR laser for generation of ultrasound A compact high average power mid infrared range laser for ultrasound inspection. The laser comprises one of a Nd:YAG or Yb:YAG laser pumped by a diode at 808 nm to produce a 1 micron output beam. The 1 micron output beam is directed to an optical parametric oscillat... | 11/22/2011 |
| 8023536 | Weapon system and method for beam containment and beamwalk maintenance utilizing optical fibers A weapon system includes a weapon system illuminator laser system and one or more optical fibers. The weapon system illuminator laser system can produce one or more illuminator laser beams to illuminate at least one object outside the weapon system without destroyin... | 09/20/2011 |
| 7782909 | Frequency-tunable terahertz light source device Provided is a frequency-tunable terahertz light source device. The frequency-tunable terahertz light source device satisfies a Littrow diffraction condition at a wavelength and simultaneously satisfies a Littman-Metcalf diffraction condition at another wavelength us... | 08/24/2010 |
| 7548566 | Terahertz lasers and amplifiers based on resonant optical phonon scattering to achieve population inversion The present invention provides quantum cascade lasers and amplifier that operate in a frequency range of about 1 Terahertz to about 10 Terahertz. In one aspect, a quantum cascade laser of the invention includes a semiconductor heterostructure that provides a plurali... | 06/16/2009 |
| 7386016 | Terahertz frequency radiation sources and detectors based on group IV materials and method of manufacture An electrically-pumped terahertz (THz) frequency radiation source (or detector), including an optical gain (or absorption) material with two electrodes electrically coupled to the optical gain material. The optical gain (or absorption) material is formed substantial... | 06/10/2008 |
| 7382806 | THz semiconductor laser incorporating a controlled plasmon confinement waveguide A semiconductor laser comprises an active region (12) which, in response to a pumping energy applied thereto, can produce a stimulated emission of radiation with a central wavelength (λ) in the far infrared region, and a confinement region (16, 18, 22... | 06/03/2008 |
| 7348583 | Wavelength stabilized light source An apparatus for producing wavelength stabilized electromagnetic radiation is provided, the apparatus comprising a broadband semiconductor radiation source configured to produce broadband electromagnetic radiation having a mean wavelength λm, and a bandp... | 03/25/2008 |
| 7327928 | Gas filled hollow core chalcogenide photonic bandgap fiber Raman device and method A hollow core photonic bandgap chalcogenide glass fiber includes a hollow core for passing light therethrough, a Raman active gas disposed in said core, a microstructured region disposed around said core, and a solid region disposed around said microstructured regio... | 02/05/2008 |
| 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 |
| 7305015 | Ultraviolet laser-generating device and defect inspection apparatus and method therefor An ultraviolet laser-generating device, for use in a defect inspection apparatus and a method thereof, etc., comprising: a laser ray source for irradiating and emitting a basic wave of laser ray therefrom; a wavelength converter device for receiving the basic wave o... | 12/04/2007 |
| 7286573 | Conversion of type of quantum well structure A method for converting a Type 2 quantum well semiconductor material to a Type 1 material. A second layer of undoped material is placed between first and third layers of selectively doped material, which are separated from the second layer by undoped layers having s... | 10/23/2007 |
| 7286574 | Infrared laser An infrared laser has a seed laser with an optical seed output. A pump amplifier receives the optical seed output and has an amplified output. A molecular gas laser receives the amplified output and has an infrared optical output. ... | 10/23/2007 |
| 7280569 | Electro-optical modulator module for COlaser Q-switching, mode-locking, and cavity dumping Various electro-optical modulator module designs are presented, which can provide for uniform, symmetric, and efficient heat removal for mode-locking, Q-switching, and/or cavity dumping operations. Heat can be uniformly extracted from an EO crystal without imposing ... | 10/09/2007 |
| 7272158 | Highly efficient waveguide pulsed THz electromagnetic radiation source and group-matched waveguide THz electromagnetic radiation source Electromagnetic radiation sources operating in the Terahertz (THz) region capable of overcoming the Manley-Rowe limits of known optical schemes by achieving phase matching between a THz wave and optical pulse in a nonlinear waveguide, or by achieving both phase and ... | 09/18/2007 |
| 7259906 | System and method for voice control of medical devices A light source includes a wavelength shifter that is capable of shifting a shorter optical signal wavelength to a longer optical signal wavelength based at least in part on a Raman effect in a waveguide. The wavelength shifter includes a pump laser that operable to ... | 08/21/2007 |
| 7239653 | Method and apparatus for generating MID and long IR wavelength radiation A narrow line width optical parametric oscillator (OPO) (10) is used a pump for a tunable optical parametric oscillator to enable it to produce a mid and long wavelength IR output over a wide 5–20 micron bandwidth. The pumping OPO (10) is then set up... | 07/03/2007 |
| 7215853 | Optical module formed on common substrate for branching an optical signal A collimator 111 for an input light, a collimator 112 for an output light, a collimator 113 for a branched light, a collimator 114 for an inserted light and a wavelength selecting filter 115 are provided on a common substrate 13... | 05/08/2007 |
| 7212553 | Wavelength stabilized diode-laser array A fiber laser including doped-core fiber having inner and outer cladding is optically pumped by plurality of diode-lasers. Light emitted by the diode-lasers is coupled into a single multimode optical fiber. Light from the multimode optical fiber is directed to a wav... | 05/01/2007 |
| 7196835 | Aperiodic dielectric multilayer stack A structure is provided that includes an aperiodic dielectric stack. The structure may include a substrate, a device disposed over the substrate, and a first dielectric stack disposed between the substrate and the device. The first dielectric stack includes a plural... | 03/27/2007 |
| 7158545 | Terahertz lasers and amplifiers based on resonant optical phonon scattering to achieve population inversion The present invention provides quantum cascade lasers and amplifier that operate in a frequency range of about 1 Terahertz to about 10 Terahertz. In one aspect, a quantum cascade laser of the invention includes a semiconductor heterostructure that provides a plurali... | 01/02/2007 |
| 7082145 | Pulse laser resonator A laser is disclosed which includes a gain medium, a switch element, and a pulse controller. In one embodiment laser light of differing polarizations pass along respective paths and a pulsed laser output is generated via an electro-optical element. In another embodi... | 07/25/2006 |
| 7075955 | Integrated narrow-line tunable optical parametric oscillator An integrated optical parametric oscillator, having an optical parametric oscillation region to convert a pump source into a signal beam and an idler beam, and a fine-steering region to adjust optical path of the signal beam in order to finely select a required wave... | 07/11/2006 |
| 7046703 | Bessel free electron laser device Methods and apparatus are provided for modifying a free electron laser (FEL) to produce a non-diverging laser beam. A relativistic electron beam is converted to a Bessel beam in an FEL resonator with conical end mirrors, and the Bessel beam is coupled to the optical... | 05/16/2006 |
| 7035304 | Semiconductor laser device and optical disk recording and reproducing apparatus There is provided a semiconductor laser device implementing a single transverse mode oscillation in an oscillation wavelength of 780 nm band and also having high reliability and long life in high-output driving state, and an optical disk recording and reproducing ap... | 04/25/2006 |
| 7031352 | Pulse laser resonator A laser is disclosed which includes a gain medium, a switch element, and a pulse controller. In one embodiment laser light of differing polarizations pass along respective paths and a pulsed laser output is generated via an electro-optical element. In another embodi... | 04/18/2006 |
| 7020172 | Long wavelength vertical cavity surface emitting laser Selectively oxidized vertical cavity lasers emitting at about 1290 nm using InGaAsN quantum wells that operate continuous wave below, at and above room temperature are reported. The lasers employ a semi-insulating GaAs substrate for reduced capacitance, high quality... | 03/28/2006 |
| 7011753 | Microporous filter media, filtration systems containing same, and methods of making and using The invention is directed to a microbiological interception enhanced filter medium, preferably having an adsorbent prefilter located upstream from the filter medium. Preferably, the prefilter is adapted to remove natural organic matter in an influent prior to the in... | 03/14/2006 |
| 7008537 | Microporous filter media, filtration systems containing same, and methods of making and using The invention is directed to a microbiological interception enhanced filter medium, preferably having an adsorbent prefilter located upstream from the filter medium. Preferably, the prefilter is adapted to remove natural organic matter in an influent prior to the in... | 03/07/2006 |
| 7006547 | Very high repetition rate narrow band gas discharge laser system A method and apparatus for producing a very high repetition rate gas discharge laser system in a MOPA configuration is disclosed which may comprise a master oscillator gas discharge layer system producing a beam of oscillator laser output light pulses at a very high... | 02/28/2006 |
| 6998058 | Microporous filter media, filtration systems containing same, and methods of making and using The invention is directed to a microbiological interception enhanced filter medium, preferably having an adsorbent prefilter located upstream from the filter medium. Preferably, the prefilter is adapted to remove natural organic matter in an influent prior to the in... | 02/14/2006 |
| 6998649 | Semiconductor light-emitting device A semiconductor light-emitting device capable of attaining a surface plasmon effect while attaining excellent ohmic contact is provided. This semiconductor light-emitting device comprises a semiconductor layer formed on an emission layer, a first electrode layer for... | 02/14/2006 |
| 6965625 | Apparatuses and methods for generating coherent electromagnetic laser radiation The present disclosure is directed to laser apparatuses for generating coherent electromagnetic laser radiation having an electron beam generator, a diffraction grating element oriented such that a beam of electrons from the electron beam generator is directed over ... | 11/15/2005 |
| 6959820 | Microporous filter media, filtration systems containing same, and methods of making and using The invention is directed to a microbiological interception enhanced filter medium, preferably having an adsorbent prefilter located upstream from the filter medium. Preferably, the prefilter is adapted to remove natural organic matter in an influent prior to the in... | 11/01/2005 |
| 6946674 | Low-dimensional plasmon light emitting device A low-dimensional plasmon-light emitter for converting an inputted electric energy luminescence with an arbitrary energy over a broad range. The emitter has a low-dimensional conductive structure incorporated inside or in a surface layer of a semiconductor or dielec... | 09/20/2005 |
| 6931036 | Digitally tunable laser A wavelength selection and, optionally, amplification device that finds utility as an optical filter or laser and is realized using two waveguide grating routers with different free spectral range values. ... | 08/16/2005 |
| 6898215 | Long wavelength vertical cavity surface emitting laser Selectively oxidized vertical cavity lasers emitting at about 1290 nm using InGaAsN quantum wells that operate continuous wave below, at and above room temperature are reported. The lasers employ a semi-insulating GaAs substrate for reduced capacitance, high quality... | 05/24/2005 |
| 6882665 | Light wavelength converting module A light wavelength converting module is provided in which generation of noise due to return light is prevented and a wave whose wavelength is converted can be obtained stably. The light wavelength converting module is formed by a semiconductor laser from which a fun... | 04/19/2005 |
| 6872471 | Infrared emitting electroluminescent and photoluminescent devices The present invention includes infrared emitting materials and infrared emitting devices. The present invention demonstrates 1.54 micron infrared PL and EL emission from an organic complex. This provides a very simple way to obtain a light source at 1.54 micron wave... | 03/29/2005 |
| 6859467 | Electro-optic modulator material An electro-optic device for use with a laser beam. A crystal has a first face and a second face. Means are provided for applying a voltage across the crystal to obtain a net phase retardation on the polarization of the laser beam when the laser beam is passed throug... | 02/22/2005 |
| 6782020 | Infrared generation in semiconductor lasers Infrared generation is disclosed. A first laser field having a first frequency associated with a first interband transition is generated. A second laser field having a second frequency associated with a second interband transition is generated. The generation of the... | 08/24/2004 |
