Class 372/67 - Disc-shaped

Subclass of Class 372 - Coherent light generators
Definition: Subject matter where the active media has a cross sectional
No. of patents: 45
Last issue date: 07/12/2011

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Number	Title	Issue Date
7978746	Unstable laser disk resonator An unstable laser disk resonator combines the output laser power of multiple laser disks to produce a high power, single transverse mode laser output beam, which is near diffraction limited. ...	07/12/2011
7929589	Diffractive grating coupled whispering gallery mode resonators Optical resonators and optical devices based on optical resonators that implement diffractive couplers for coupling light with the optical resonators. ...	04/19/2011
7724800	Power scaleable thin disk lasers A thin disk laser includes a thin disk of a host material incorporating a laser gain medium. The disk has opposite first and second surfaces, at least one of which is non-planar. The first surface is coated with a high reflectivity coating. The second surface has an...	05/25/2010
7609741	Disk laser including an amplified spontaneous emission (ASE) suppression feature A laser system may include a first portion of laser host material adapted for amplification of laser radiation and a second portion of laser host material surrounding the first portion which may be adapted for suppression of ASE. The first portion of laser host mate...	10/27/2009
7593447	Rotary disk laser module A rotary disk module, having a rotary disk is interposed between a pair of heat sinks each spaced from the rotary disk by a gap. A motor is installed for driving the rotary disk to rotate. The gaps are filled with cooling medium such as helium, water or liquid nitro...	09/22/2009
7573930	Anamorphotic solid-sate laser A laser system, which is used in material processing to produce a radiation line of small width and uniform high intensity in the longitudinal direction, produces radiation that has different mode numbers M2 perpendicular to the propagation direction....	08/11/2009
7492805	Scalable spherical laser A spherical laser includes a transparent or semi-transparent outer spherical vessel having an internal cavity, an amplifying medium in the cavity, and means to excite the amplifying medium. The sphere is provided with a partially reflective coating to act as a spher...	02/17/2009
7319710	Microdisk laser with unidirectional generation property The present invention relates to a microdisk laser with a unidirectional generation property, and more particularly, to a microdisk laser designed in the form of a triangle, wherein the incident angles of portions of a laser beam at two upper sides of the triangle a...	01/15/2008
7308014	Laser The present invention relates to a laser including a laser amplifier and a laser resonator. The laser amplifier includes a disk-shaped active medium having a reflector. The active medium rests on a cooling means for cooling said active medium and said reflector. The...	12/11/2007
7242705	Grating-outcoupled cavity resonator having uni-directional emission A grating-outcoupled microcavity disk resonator has whispering gallery modes existing in a nearly circular resonator. Light is outcoupled by providing a grating region in the plane of the grating-outcoupled microcavity disk resonator. The grating region provides an ...	07/10/2007
7218662	Coupled opto-electronic oscillators with low noise Coupled opto-electronic oscillators with a whispering-gallery-mode (WGM) optical resonator inside the laser cavity to produce oscillation signals out of the optical spectral range, e.g., RF or microwave frequencies. ...	05/15/2007
7200160	Laser beam source with a laser element containing a thin crystal disk as a laser-active medium A laser beam source has a laser element provided with a thin crystal disk as a laser active medium. The laser beam source has improved mechanical stability and improved thermal contact with respect to a cooling element on the flat side of the crystal disk that is di...	04/03/2007
7126974	Ring geometry diode laser arrays and methods Systems, configurations and methods of using laser diodes in ring-shaped arrays placed a distance away from thin disk solid-state laser gain media, which provide uniformly absorbed pump power distribution with high absorption efficiency. This results in major improv...	10/24/2006
7103078	Laser containing a distributed gain medium A laser device which may be used as an oscillator or amplifier comprising a chamber having a volume formed therein and a gain medium within the volume. The gain medium comprises solid-state elements containing active laser ion distributed within the volume. A coolin...	09/05/2006
7031365	Locally-outcoupled cavity resonator having unidirectional emission A locally-outcoupled optical resonator has whispering gallery modes existing in a nearly circular resonator. Light is outcoupled by providing a local perturbing feature on the perimeter of the locally-outcoupled cavity resonator. The perturbing feature provides an o...	04/18/2006
6987789	Multiple-disk laser system A laser system for producing a laser beam, the laser system having top and bottom heat-sinking bars forming the structure of the laser system and plurality of disks comprising a laser material mounted on both the bottom heat-sinking bar and the top heat-sinking bar....	01/17/2006
6891875	Optical disc device An object of the present invention is to remove a laser beam source noise in an optical disc device. An optical disc device comprises: a laser beam source which outputs a laser beam, a reproducing signal beam-receiver which receives a signal beam from an opti...	05/10/2005
6873633	Solid-state laser A solid-state laser having an active medium for generating a laser beam is described. The laser includes a resonator, and a plurality of crystal wafers disposed in the resonator and are optically coupled to one another and form a common beam path for the laser beam....	03/29/2005
6834070	Edge-facet pumped, multi-aperture, thin-disk laser geometry for very high average power output scaling The average power output of a laser is scaled, to first order, by increasing the transverse dimension of the gain medium while increasing the thickness of an index matched light guide proportionately. Strategic facets cut at the edges of the laminated gain medium pr...	12/21/2004
6807216	Circular laser A novel laser apparatus is disclosed which pertains to laser resonator geometries possessing circular symmetry, such as in the case of disk or spherical lasers. The disclosed invention utilizes multi-layer dielectric (MLD) thin film reflectors of many layer pairs of...	10/19/2004
6747789	Laser amplifying system In order to improve a laser amplifying system, comprising a solid-state member which has flat sides located opposite one another, is of a plate-like design and comprises a laser-active medium, a laser radiation field passing through the solid-state member, a pumping...	06/08/2004
6385220	Laser clamping assembly and method A laser clamping system for a disc laser medium that includes two heat conductive members (one of which is optically transparent) positioned on either side of a disc laser. Pressure is applied to the conductive members to restrain the disc from deforming ...	05/07/2002
6373565	Method and apparatus to detect a flaw in a surface of an article 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...	04/16/2002
6347109	High average power scaleable thin-disk laser Using a thin disk laser gain element with an undoped cap layer enables the scaling of lasers to extremely high average output power values. Ordinarily, the power scaling of such thin disk lasers is limited by the deleterious effects of amplified spontaneo...	02/12/2002
5936988	High pulse rate pulse power system A high pulse rate pulse power source for supplying controlled high energy electrical pulses at rates of 2000 Hz or greater. The source includes a pulse generating circuit including a charging capacitor, a solid state switch and a current limiting inductor...	08/10/1999
5926496	Semiconductor micro-resonator device An optical, semiconductor micro-resonator device includes a microcavity resonator and a pair of adjacent waveguides. The microcavity resonator may be formed as a disk, a ring or closed loop with arbitrarily curved circumference with a diameter of approxim...	07/20/1999
5878070	Photonic wire microcavity light emitting devices A photonic light emitting device comprising a relatively high refractive index photonic-wire semiconductor waveguide core in the form of an arcuate shape, linear shape and combinations thereof. The waveguide core is formed into a closed loop cavity for a ...	03/02/1999
5825799	Microcavity semiconductor laser Laser comprising a first lasing microdisk, microcylinder or microannulus defining a microcavity having a circular cross-sectional periphery and a second waveguiding micromember spaced from the first lasing micromember in a different plane and optically co...	10/20/1998
5790583	Photonic-well Microcavity light emitting devices A photonic light emitting device comprising a relatively high refractive index photonic-well semiconductor waveguide core in the form of an arcuate shape, linear shape and combinations thereof. The waveguide core is formed into a closed loop cavity for a ...	08/04/1998
5343490	Whispering mode micro-resonator Device for electromagnetic emission depends on total internal reflection-on whispering gallery mode cavitation about the periphery of a disk-shaped element of sub-wavelength thickness. As a laser, operating above threshold, the design is alternative to th...	08/30/1994
5177762	Saturable reactor A saturable reactor comprising a magnetic core (1) having an annular or an elongated race-track configuration, an electrical insulator (6) disposed around the magnetic core and a conductor winding (3) wound around the insulator (6). A coolant duct (7) is ...	01/05/1993
5052011	Explosively pumped laser light A single shot laser pumped by detonation of an explosive in a shell casing. The shock wave from detonation of the explosive causes a rare gas to luminesce. The high intensity light from the gas enters a lasing medium, which thereafter outputs a pulse of l...	09/24/1991
4974228	Magnetic field profile for improved ion laser performance An ion laser is constructed with means for generating a magnetic confinement field operating in the cathode transition region of the laser. The magnetic confinement field is preferably generated by first and second magnetic windings, each axially aligned ...	11/27/1990
4821279	Gas laser In a gas ion laser of the type having a serial array of coaxially aligned axially spaced floating electrodes contained within an evacuable dielectric envelope for exciting a d.c. plasma laser pumping discharge, the electrodes and gas fill are cooled by a ...	04/11/1989
4270095	Cycloid-scanning laser pumping method and apparatus A dye laser is disclosed wherein a plastic disk containing laser dye is moved within a cylindrical race relative to a stationary pumping laser beam such that the pumping beam effectively scans the surface of the laser disk along a cycloidal path as the di...	05/26/1981
4134084	Hybrid laser structures Hybrid laser structures are disclosed, the structures being axial gradient lasers that are a combination of solid-state lasable plate elements spaced along the optical axis of the laser and a cooling liquid for the plate elements, the liquid having lasing...	01/09/1979
4125816	Solid state laser having two output wavelengths A solid state laser including a plurality of plate like lasable elements in an array on a common optical axis. There are two different plate like elements, arranged in an alternating pattern, each containing a lasing ion which lases at a wavelength that i...	11/14/1978
4119928	Laser head and application thereof to a laser generator device The invention relates to a laser head and the application thereof to a laser generator device. The laser head comprises in particular a neodymium-doped glass rod, a light excitation source and laser rubies excited by this source, the beams emitted by the ...	10/10/1978
4074203	Elliptical beam amplifying system A laser amplifier system is provided for amplifying laser beams of elliptical cross-section which includes one or more amplifying disc segments of circular cross-section, the diameter of these segments being much greater than their thickness and also equa...	02/14/1978
3988697	Glass laser discs with annular alkali lead borate coatings and uses thereof A laser assembly that includes a novel glass laser disc having an annular alkali lead borate glass coating for use in the assembly is disclosed. The annular coating has an index of refraction that is about 3 to 12% greater than the index of refraction of ...	10/26/1976

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Class 372/67 - Disc-shaped