Class 372/1 - SUPERRADIANT LASER

Subclass of Class 372 - Coherent light generators
Definition: Subject matter wherein coherent light is generated in an
No. of patents: 31
Last issue date: 03/30/2010

Number	Title	Issue Date
7688870	Optical amplifier-integrated super luminescent diode and external cavity laser using the same Provided is a super luminescent diode having low power consumption due to low threshold current and a high output power in low-current operation, which is suitable for an external cavity laser. The super luminescent diode for use in the external cavity laser is divi...	03/30/2010
7599403	Superluminescent diode and method of manufacturing the same A 1.55 μm SLD having a laser diode (LD) region and a semiconductor optical amplifier (SOA) region, and a method of fabricating the same, are disclosed. The SLD includes: an InP substrate having a LD region and a SOA region for amplifying light emitted from the LD r...	10/06/2009
7058109	Image amplification for laser systems An optical image amplifier comprising a copper bromide laser (10) to provide a source of optical radiation, an optical amplifier (18) for amplifying the optical radiation received from the laser (10), an optical image forming device (16) ...	06/06/2006
6999487	Terahertz generation processes and imaging process thereof A process including: magnetically energizing susceptible magnetic particles; and accumulating the resulting terahertz lasing mode output of the particles. ...	02/14/2006
6990126	Systems and methods for producing superradiance using molecular magnets Superradiance is generated by generating coherent radiation in the 10 gigahertz (1010) to terahertz (1012) regions of the electromagnetic spectrum. The radiation is produced by pulsing a micro crystal of a molecular magnet in a cavity or betwee...	01/24/2006
6931031	Generating electronic carrier signals in the optical domain A dual wavelength optical fiber distributed feedback laser comprises a pump laser coupled to a birefringent fiber in which a first grating device (two co-located single phase-shift fiber Bragg gratings (FBGs)) is provided. The grating device gives the laser two pote...	08/16/2005
6856634	Laser processing device and laser processing method The present invention provides a laser machining apparatus in a simple structure which can properly carry out laser machining by irradiating a laser beam easily at a predetermined energy density to a machining-target site in a predetermined range, and in addition, w...	02/15/2005
6839368	Dipolar organic materials producing highly efficient laser-like emission High-efficiency laser-like emission at low thresholds in dipolar organic materials upon pulsed optical excitation, without using any external mirrors. Unusually high conversion efficiencies and low thresholds in laser-like emission have been observed in the solution...	01/04/2005
6697192	High power, spectrally combined laser systems and related methods An external-resonator laser system having multiple laser elements is configured to permit each laser to undergo individual amplification notwithstanding optical beam combination. In this way, overall output power may be scaled in a desired fashion, depend...	02/24/2004
6553043	Overcoming L-I kink effects in a laser diode feedback control The negative effects of kinking in the L-I characteristics of laser diode operation with respect to feedback control for laser diode current control is suppressed by either (1) combining the output of a plurality of laser diodes together or (2) by imparti...	04/22/2003
6513251	Illuminable laser sight An illuminable laser sight has a power source, a laser module coupled to the power source, a laser module coupled to the power source and having a laser diode for emitting laser beams, and an adjuster module positioned around the laser module and coupled ...	02/04/2003
5875203	Stable fiber ASE sources incorporating spectral filtering Fiber-amplified spontaneous emission sources incorporating spectral filters show an improvement in mean wavelength stability versus a number of operating factors, including pump wavelength, pump power, feedback, and temperature. By adjusting the spectral ...	02/23/1999
5108183	Interferometer utilizing superfluorescent optical source An improved broadband light source for a Sagnac interferometer includes a waveguide, such as a fluorescent optical fiber, that is pumped by a pump source with a sufficient intensity to generate temporally incoherent light. The fluorescent optical fiber ha...	04/28/1992
5106193	Optical waveguide amplifier source gyroscope An improved broadband light source for a Sagnac interferometer includes a fluorescent optical medium that is pumped by light from a pump source with a sufficient intensity to cause the fluorescent optical medium to generate temporally incoherent light by ...	04/21/1992
5103452	X-ray laser system, x-ray laser and method Disclosed is an x-ray laser system comprising a laser containing generating means for emitting short wave length radiation, and means external to said laser for energizing said generating means, wherein when the laser is in an operative mode emitting radi...	04/07/1992
4901123	Superluminescent diode According to this invention, a superluminescent diode includes a current injection portion having a current injection electrode formed adjacent to a first end face, a light-absorption portion contiguous with the current injection portion; and a waveguide ...	02/13/1990
4831627	Energy generator An energy generator (10) that converts matter in the form of a gas into an energy source. The generator functions by injecting a gas, such as hydrogen, into a confined chamber (12). The chamber includes an annular permanent magnet (30) and a rotating magn...	05/16/1989
4827479	Density gradient free electron collisionally excited X-ray laser An operational X-ray laser (30) is provided that amplifies 3p-3s transition X-ray radiation along an approximately linear path. The X-ray laser (30) is driven by a high power optical laser. The driving line focused optical laser beam (32) illuminates a fr...	05/02/1989
4791645	Lighting device A lighting device is provided for emitting superradiant fluorescent light. First material layers are provided which emit predetermined electromagnetic waves of spontaneous emission when supplied with a predetermined energy (e.g. a pumping ray or beam). Se...	12/13/1988
4660203	Soft X-ray laser using pumping of 3P and 4P levels of He-like and H-like ions X-ray laser method and apparatus for producing coherent radiation at, for example, energies of at least 40 eV, using Be-like Cr, N-like Ni, He-like Na, B-like Cr, Be-like Mn or similar multiply ionized species to pump appropriate high energy transitions i...	04/21/1987
4637025	Super radiant light source A super-radiant light source having an output with a low temporal coherence well suited, for example, to optical inertial sensor applications, includes a single mode optical waveguide such as an optical fiber having its core doped with an active laser mat...	01/13/1987
4233567	Face-cooled laser device having increased energy storage and output A solid laser rod optically pumped is cooled to produce a large thermal gradient extending only along the radiation propagation direction. This thermal gradient results in a reduced average gain cross section, permitting increased energy storage and corre...	11/11/1980
4215320	Far-infrared laser tuned by the dynamic Stark effect Far-infrared tunable radiation is produced in a four-level laser system by using a pumping means for exciting population from the lowest level of the system to the upper level of a laser transition to create a population inversion between the upper and lo...	07/29/1980
4166252	Laser with travelling wave excitation A pair of elongated electrodes are located in a common plane, separated from each other by an elongated gap. A gaseous medium capable of being stimulated to emit radiation by laser action is located in the gap. A discharge between the electrodes is initia...	08/28/1979
4137509	Tunable laser based upon S₂, Te₂ and other selected dimers Lasing can be achieved by pumping a laser cell containing a vapor formed predominantly of Group VI dimers such as S2, Te2, Se2, TeO, TeSe, TeS and SeS, from a ground electronic state to a selected vibrational-rotational le...	01/30/1979
4132962	Tunable laser system A tunable laser system emitting coherent radiation selectively variable over the range of wavelengths from about 2760 A to about 3220 A utilizes a crystal, composed of fluoride of at least a Column IIIb metal doped with trivalent ions of cerium and pumped...	01/02/1979
4083018	Tunable laser system A tunable laser system emitting coherent radiation selectively variable over the range of wavelengths from about 1650 A to about 3300 A utilizes a crystal, composed of a fluoride of at least a Column IIIb metal doped with at least one trivalent ion of a l...	04/04/1978
4077020	Pulsed gas laser A pulsed gas laser is constituted by Blumlein circuits wherein space metal plates function both as capacitors and transmission lines coupling high frequency oscillations to a gas filled laser tube. The tube itself is formed by spaced metal side walls whic...	02/28/1978
4063106	Optical fiber Raman oscillator A tunable radiation source employing the stimulated Raman-scattering process is disclosed. The source generates several orders of Stokes radiation in an optical-fiber oscillator cavity, which Stokes radiation may be independently tuned by incorporating se...	12/13/1977
4047125	Electron beam pumped gas laser An electron beam pumped gas laser includes an evacuated cavity adapted to house a lasing gas and an electron beam launching means (such as a field emission diode). Means are provided to insert a lasing gas into the cavity so as to produce a traveling dens...	09/06/1977
3955153	Ring laser for penetrating waves A ring laser for penetrating electromagnetic radiation such as X or gamma rays, using a pumping beam supplied by a primary lightwave or infrared laser. A member made of active material is illuminated by the beam, which has symmetry of revolution around it...	05/04/1976

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Class 372/1 - SUPERRADIANT LASER