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| Number | Title | Issue Date |
| 7940829 | Laser devices using gain media operating in out of phase mode The basic gain medium enclosure for laser devices comprises two parallel lateral mirrors which geometrically define the extent of the gain medium enclosure and which allow the formation of lateral stationary sinusoidal waves. ... | 05/10/2011 |
| 7907655 | Mode selection by synchronous pumping of a wagon wheel optical cavity A laser cavity structure 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 a very-high finesse Bragg reflector (VHF-BR) thin film reflectors of ma... | 03/15/2011 |
| 7590160 | High-gain diode-pumped laser amplifier A laser amplifier includes a laser active slab with a source of pump power to amplify an input laser beam, the laser active slab including a block of laser active material having opposed lateral faces defining a wedge lateral dihedral angle, opposed longitudinal fac... | 09/15/2009 |
| 7515625 | Multipath laser apparatus using a solid-state slab laser rod A laser apparatus has a multipath solid-state slab laser rod and an excitation source that excites it, and uses a solid-state slab laser rod that has a trapezoid or parallelogram-shaped cross section along the optical path, that is provided with six or more faces an... | 04/07/2009 |
| 7440480 | Tetravalent chromium doped laser materials and NIR tunable lasers A method is described to improve and produce purer Cr4+-doped laser materials and lasers with reduced co-incorporation of chromium in any other valence states, such as Cr3+, Cr2+, Cr5+, and Cr6+. The method incl... | 10/21/2008 |
| 7430230 | Tube solid-state laser An improved tube solid-state laser (SSL) is provided utilizing diode pumping, microchannel cooling, optics, and/or new coating and bonding processes. In one example, an amplifier module for the SSL includes a tube of laser gain material, a first substrate and a seco... | 09/30/2008 |
| 7388895 | Corner-pumping method and gain module for high power slab laser Corner pumping method and gain module for high power slab laser are disclosed. In one embodiment, said method comprises directing a pump light from one or more pump light sources each consisting of a high power diode array and its coupling system into a laser slab t... | 06/17/2008 |
| 7382817 | V-coupled-cavity semiconductor laser A semiconductor laser comprises two optical cavities, each comprising an optical waveguide bounded by two partially reflecting elements. The two optical waveguides are disposed on a substrate to form a substantially V-shaped geometry with substantially no cross-coup... | 06/03/2008 |
| 7382818 | Diffusion bonded pump cavity A solid state pump cavity comprising a laser rod encased by diffusion bonding inside an outer cladding. The outer cladding provides the ability to efficiently conduct heat away from the laser rod. The outer cladding is also configured to absorb spontaneous laser rad... | 06/03/2008 |
| 7366217 | Optimizing mirror reflectivity for reducing spontaneous emissions in photodiodes An optical structure that reduces the effects of spontaneous emissions from the active region of a laser. An optical structure includes optimizations to reduce the effects of spontaneous emissions. The optical structure includes a VCSEL with top and bottom DBR mirro... | 04/29/2008 |
| 7359416 | Optical semiconductor device An optical semiconductor device includes a semiconductor laser chip, a base for mounting the semiconductor laser chip and a solder layer sandwiched between the top surface of the base and the bottom surface of the semiconductor laser chip. The semiconductor laser ch... | 04/15/2008 |
| 7339964 | Laser diode with phase matching grating A semiconductor diode laser that generates light at wavelengths longer than conventional diode lasers. The laser includes a first gain element that generates a first “pump” laser beam having a first optical frequency and a second gain element that generates a se... | 03/04/2008 |
| 7327923 | Spiral multilayer fibers A spiral wound fiber that includes birefringent interfaces is useful in different optical devices. One type of wound fiber includes at least first and second material layers. At least one of the layers is polymeric and at least one of the layers is birefringent. The... | 02/05/2008 |
| RE40019 | High power high efficiency cladding pumping fiber laser In the present invention, methods and apparatus for making efficient cladding pumping fiber lasers is disclosed. In particular, new fiber cladding geometry and new method of coupling pumping laser into an optical fiber are disclosed. Both aspects of the present inve... | 01/22/2008 |
| 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 |
| 7289269 | Process and arrangement for superimposing ray bundles A process and an arrangement are described by means of which a plurality of ray bundles emitted from individual radiation sources are combined with the aid of an imaging optics system. The individual radiation sources are in this connection arranged on at least one ... | 10/30/2007 |
| 7263116 | Dielectric coupled COslab laser A slab laser includes two elongated electrodes arranged spaced apart and face-to-face. Either one or two slabs of a solid dielectric material extend along the length of the electrodes between the electrodes. A discharge gap is formed either between one of the electr... | 08/28/2007 |
| 7260127 | Dual layer color-center patterned light source A thin layer of ionic crystal is grown on a substrate. The crystal could be any type of ionic crystal, such as sodium chloride or potassium chloride. The crystal is a pure form of the chosen compound and may contain contaminants which would shift the wavelength of c... | 08/21/2007 |
| 7256931 | Optical amplifying device In an optical amplifying device, an optical beam passes multiple times through a grazing-incidence bounce amplifier, accessing different parts (G1,G2) of the gain region on each transit. This provides improved characteristics in beam quality, with high... | 08/14/2007 |
| 7250976 | Layout of the optical path in an image capturing system The image-capturing system comprises a image-capturing module and a plurality of mirrors, wherein the image-capturing module has a lens and a charge-coupled device (CCD). The image-capturing module is located on about the center in the image-capturing system, and a ... | 07/31/2007 |
| 7224875 | Semiconductor optical device integrated with a photo detector The present invention provides a semiconductor optical device 1 that includes a photodiode capable of monitoring front light of the light-emitting device. The optical device 1 includes a photodiode 3, which is formed on a substrate 7 and ... | 05/29/2007 |
| 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 |
| 7193772 | Conductively cooled liquid thermal nonlinearity cell for phase conjugation and method A thermal nonlinear cell and method. The cell includes a substantially planar nonlinear medium and a mechanism for removing thermal energy from the medium in a direction substantially orthogonal to said medium. In one embodiment, the mechanism for removing thermal e... | 03/20/2007 |
| 7193771 | Power scalable optical systems for generating, transporting, and delivering high power, high quality laser beams Power scalable, rectangular, multi-mode, self-imaging, waveguide technologies are used with various combination of large aperture configurations, 20, 50, 80, 322, 324, 326, 328, 330, 332, 334, 336, 338, Gaussian 360 and super-Gaussian 350 beam p... | 03/20/2007 |
| 7190861 | Monolithic semiconductor light source with spectral controllability The invention is in the field of distributed Raman amplification for digital and analog transmission applications and other applications, e.g., instrumentation and imaging applications, including HFC-CATV applications. In particular, the invention uses a high power ... | 03/13/2007 |
| 7170919 | Diode-pumped solid-state laser gain module A laser gain device (10) holds a laser slab (60) which is pumped by pump energy from at least one diode array assembly (24). An angle at which pump energy from the diode array assembly (24) impinges the laser slab (60) is adjustabl... | 01/30/2007 |
| 7164699 | Compact, high-power, low-jitter, semiconductor modelocked laser module A low-jitter optical pulse source including: a monolithic waveguide including a first section substantially perpendicular to a first facet and a second section being curved and substantially non-perpendicular to a second facet; and, an optical circulator coupled to ... | 01/16/2007 |
| 7149231 | Monolithic, side-pumped, passively Q-switched solid-state laser A monolithic, side pumped, passively Q-switched, solid-state laser (10) includes a laser resonator structure (16) that includes a laser gain medium (12) having an output face bonded to a passive Q-switch (14). The gain medium (12) ... | 12/12/2006 |
| 7130111 | Optical amplifier with transverse pump An optical amplifier comprises a device substrate, a first waveguide embedded in the device substrate, and a plurality of lasers. The lasers are positioned to provide a first plurality of light beams substantially transverse to the first waveguide. ... | 10/31/2006 |
| 7130045 | Monochromator and method of use A monochromator for isolating or recombining a narrowband optical signal from a broadband signal. A cylinder with a continuous outer wall and two planar end surfaces is composed of a dispersive medium. The cylinder forms a multi-reflective cavity, wherein a broadban... | 10/31/2006 |
| 7123634 | Zig-zag laser amplifier with polarization controlled reflectors A solid state zig-zag slab laser amplifier in which depolarization occurring at total internal reflection from opposed lateral faces of the amplifier slab is controlled by selecting a complex evanescent coating that provides a selected phase retardance that results ... | 10/17/2006 |
| 7120184 | Phasing surface emitting diode laser outputs into a coherent laser beam A system for generating a powerful laser beam includes a first laser element and at least one additional laser element having a rear laser mirror, an output mirror that is 100% reflective at normal incidence and | 10/10/2006 |
| 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 |
| 7092425 | VCSEL device with improved modal properties Using lateral physical modulation, the optical properties of VCSELs can be stabilized and controlled by spatially varying the characteristics of the device material. This results in stabilization of the linewidth, the numerical aperture, the near and far field, as a... | 08/15/2006 |
| 7087447 | Method for fabricating zig-zag slabs for solid state lasers A method for batch manufacturing of slabs for zig-zag lasers including steps of bonding two non-active media to either side of an active medium to form a sandwich, dicing the sandwich to provide slices, rendering two surfaces of each slice into total-internal-reflec... | 08/08/2006 |
| 7072368 | Optical contacting method and apparatus Disclosed is a method and apparatus for improving the performance of a microlaser. A laser material (110) is optically contacted to a nonlinear material (120), either directly or through an intermediate clear or undoped substrate (115), to form ... | 07/04/2006 |
| 7068905 | Extended optical bandwidth semiconductor source An optical bandwidth source for generating amplified spontaneous emission (ASE) across a selected wavelength range, the optical bandwidth source including a waveguide having a first end and a second end, and comprising a plurality of separate wavelength gain subsect... | 06/27/2006 |
| 7065122 | Wire-wound apparatus and high-voltage pulse generating circuit using wire-wound apparatus Electric field easing members (corona rings) for easing concentration of electric fields caused at edges of a core are disposed between the core and a winding to form a gap so to allow the presence of a cooling medium (insulating oil) between the top and bottom surf... | 06/20/2006 |
| 7058093 | Q-switched, cavity dumped laser systems for material processing This disclosure discusses techniques for obtaining wavelength selected simultaneously super pulsed Q-switched and cavity dumped laser pulses utilizing high optical damage threshold electro-optic modulators, maintaining a zero DC voltage bias on the CdTe electro-opti... | 06/06/2006 |
| 7039079 | Pulsed COlaser including an optical damage resistant electro-optical switching arrangement A laser includes a gain medium located in a laser resonator. The gain medium generates plane polarized radiation plane polarized in a first polarization orientation. An electro-optical switch is located in the resonator. When the switch is activated the polarization... | 05/02/2006 |
