Class / Patent application number | Description | Number of patent applications / Date published |
372093000 | Folded cavity | 16 |
20090059991 | RE-ENTRANT STRUCTURE FOR THIN DISK RESONATORS - The present embodiment provides a system and method for lowering the saturated gain level of a thin-disk laser oscillator by multipassing each gain generator in such a way to cancel some of the wavefront error contributions from the disk surfaces. Wavefront aberrations introduced on one pass of the gain disk are canceled through symmetry on successive passes. The reduced wavefront error significantly improves design space for single-mode resonators. Maximum effectiveness is achieved by rotating the gain disk so that the fold plane-of-symmetry reverses the largest wavefront error or specifically chosen functional forms. | 03-05-2009 |
20090190623 | EXTERNAL-CAVITY OPTICALLY-PUMPED SEMICONDUCTOR-LASER WITH A RESONATOR STOP - An optically pumped semiconductor-laser (OPS-laser) resonator includes an arrangement for delivering optical pump radiation on an OPS-chip to cause fundamental radiation to circulate in the resonator. The resonator includes second and third-harmonic generating crystals and is arranged deliver third-harmonic radiation. The resonator also includes a stop positioned and configured to stabilize the laser output. The pump radiation arrangement delivers the pump radiation at an angle to the resonator axis and includes wedged GRIN lens arranged such that the pump radiation forms a circular spot on the OPS chip. The third harmonic generating crystal acts as a polarizer for the fundamental radiation and angularly separates fundamental and third harmonic beams. | 07-30-2009 |
20150357787 | MULTI-PASS SLAB LASER WITH INTERNAL BEAM SHAPING - The laser resonator includes a first resonator wall, a second resonator wall that is substantially parallel to the first resonator wall and is separated from the first resonator wall in a first transverse direction thereby defining a gap having a gap width between the first and second resonator walls, and at least two laser cavity mirrors. The laser cavity mirrors are arranged to allow an intra-cavity laser beam to reflect from the output coupling mirror thereby forming a first beam spot on the output coupling mirror. The first curved mirror has a radius of curvature such that the reflection of the intra-cavity laser beam from the first curved mirror causes the first beam spot on the output coupling mirror to have a substantially symmetric shape. | 12-10-2015 |
372094000 | Having a ring configuration | 13 |
20090003403 | Wavelength tunable ring-resonator - A ring laser arrangement adapted for providing an optical beam travelling on an optical path representing a closed loop, includes a laser gain medium coupled into the optical path for amplifying the optical beam by stimulated emission, and a wavelength filter coupled into the optical path for providing a wavelength selection to the optical beam travelling along the optical path. A reverse beam travelling in one direction of the optical path is utilized for controlling at least one property of a forward beam travelling in an opposite direction of the optical path. | 01-01-2009 |
20090129426 | Semiconductor System Having a Ring Laser Fabricated by Epitaxial Layer Overgrowth - The present invention provides a ring laser system comprising forming an optical core by an epitaxial layer overgrowth over an intermediate layer, forming multi-quantum wells adjacent to the optical core and forming an outer structure further comprising a total internal reflector, wherein forming photons within the multi-quantum wells further comprises circulating the photons within the ring laser structure comprising the outer structure, the multi-quantum wells, and the optical core. | 05-21-2009 |
20090323755 | Optical resonator and laser light source - An optical resonator includes an optical waveguide with a core surrounded by a clad of lower refractive index. The optical waveguide includes a non-terminated ring-type optical waveguide for resonant propagation of light and an input-output optical waveguide, unitarily coupled to the ring-type optical waveguide, for output of light from the ring-type optical waveguide, or input of light to and output of light from the optical ring waveguide. The ring-type optical waveguide and input-output optical waveguide can be formed simultaneously as silicon-wire waveguides. The unitary coupling simplifies fabrication of the optical resonator. | 12-31-2009 |
20100098129 | LASER-INDUCED OPTICAL WIRING APPARATUS - A laser-induced optical wiring apparatus is provided wherein optical wiring is realized by digital operations of a laser oscillator. The apparatus includes optical ring resonator formed of a loop-shaped optical waveguide on substrate. At least two optical gain sections are provided on the optical ring resonator. When each optical gain section is activated, a laser oscillator including the optical ring resonator and optical gain sections is enabled to oscillate. In this state, the gain of at least one of the optical gain sections is changed in accordance with an input signal, thereby changing the optical route gain of the optical ring resonator to change the oscillation state of the laser oscillator. A change in the laser oscillation state is detected by the optical gain section other than the at least one optical gain section, whereby an output signal is acquired. | 04-22-2010 |
20110286489 | ALL-SILICON RAMAN AMPLIFIERS AND LASER BASED ON MICRO RING RESONATORS - Devices for generating a laser beam are disclosed. The devices include a silicon micro ring having at least one silicon optical waveguide disposed at a distance from the micro ring. The radius and the cross-sectional dimension of the micro ring, the cross-sectional dimension of the waveguide, and the distance between the micro ring and the waveguide are determined such that one or more pairs of whispering gallery mode resonant frequencies of the micro ring are separated by an optical phonon frequency of silicon. Methods of manufacturing a lasing device including a silicon micro ring coupled with a silicon waveguide are also disclosed. | 11-24-2011 |
20120063484 | DISTRIBUTED REFLECTOR IN A MICRORING RESONATOR - A component having a microring resonator and grating, coupled to a waveguide is described. By selection of the grating period, and other parameters such as the grating-waveguide coupling coefficient, an efficient filter may be designed and constructed. The component may be used in passive devices such as add-drop multiplexers or sensors, or in active devices such as lasers. Designs having essentially no response sidelobes, very narrow effective bandwidths, and fast filter roll-offs may permit compact devices to be produced, when compared with typical distributed sampled Bragg grating structures. | 03-15-2012 |
20120170607 | LASER AMPLIFIER SYSTEM - A laser amplifier system is provided which comprises a resonator with optical resonator elements which determine a course of a resonator radiation field which propagates along an optical axis and at least one laser-active medium (LM). The resonator is designed as a split resonator and has a first resonator section which extends from a first virtual plane of separation and a second resonator section which extends from a second virtual plane of separation. The resonator sections are dimensioned optically such that the resonator radiation field has radiation field states corresponding to the same resonator modes in each of the virtual planes of separation. An amplifying unit optically independent of the resonator is arranged between the first and the second virtual planes of separation. The amplifying unit comprises the at least one laser-active medium and couples the radiation field states in a neutral manner with respect to the resonator modes. | 07-05-2012 |
20120177080 | ALL-SILICON RAMAN AMPLIFIERS AND LASER BASED ON MICRO RING RESONATORS - Devices for generating a laser beam are disclosed. The devices include a silicon micro ring having at least one silicon optical waveguide disposed at a distance from the micro ring. The radius and the cross-sectional dimension of the micro ring, the cross-sectional dimension of the waveguide, and the distance between the micro ring and the waveguide are determined such that one or more pairs of whispering gallery mode resonant frequencies of the micro ring are separated by an optical phonon frequency of silicon. Methods of manufacturing a lasing device including a silicon micro ring coupled with a silicon waveguide are also disclosed. | 07-12-2012 |
20120307858 | VERY HIGH POWER LASER CHAMBER OPTICAL IMPROVEMENTS - An aspect of the disclosed subject matter includes a method of reducing the laser absorption of a beam reverser prism consisting of at least one of the following: increasing a first distance between a first incident point and a chamfered corner, wherein the first incident point is on a first reflective surface of the prism and the chamfered corner is formed between the first reflective surface and a second reflective surface of the prism, wherein the chamfered corner has a chamfered surface; increasing a second distance between a second incident point and the chamfered corner, wherein the second incident point is on the second reflective surface of the prism; and increasing a reflectivity of the chamfered surface of the chamfered corner of the prism. A method of determining a prime cut for an optical component is also disclosed. A laser including at least one prime cut optical component is also disclosed. | 12-06-2012 |
20140369373 | TWO-STAGE LASER SYSTEM FOR ALIGNERS - The invention relates to a two-stage laser system well fit for semiconductor aligners, which is reduced in terms of spatial coherence while taking advantage of the high stability, high output efficiency and fine line width of the MOPO mode. The two-stage laser system for aligners comprises an oscillation-stage laser ( | 12-18-2014 |
20150010035 | UNIDIRECTIONAL RING LASERS - A laser includes an active ring, a passive waveguide, and a reflector. The active ring is to generate light. The passive waveguide is associated with the active ring to capture generated light. The reflector is associated with the passive waveguide to cause captured light from the waveguide to be coupled into the active ring to trigger domination of unidirectional lasing in the active ring to generate light. | 01-08-2015 |
20150071321 | HIGH ENERGY SEMICONDUCTOR LASER - A high energy semiconductor laser capable of high optical efficiency includes a master oscillator coupled to a plurality of slave oscillators, each producing a laser beam that is substantially at the same wavelength as the output beam from the master oscillator. The outputs of the slave oscillators are then coherently combined to a single monochromatic beam having an optical power which is substantially greater than that of beam output from the master oscillator. The slave oscillators can be configured as ring resonators. A suitable ring oscillator can be built by arranging one or more semiconductor diode laser gain media, two or more reflecting mirrors, and at least one semireflective mirror in a ring configuration. A suitable ring oscillator can also be built by machining a solid block to include one or more semiconductor diode laser high gain regions. | 03-12-2015 |
20150333479 | UNIDIRECTIONAL RING LASERS - A laser includes an active ring, a passive waveguide, and a reflector. The active ring is to generate light. The passive waveguide is associated with the active ring to capture generated light. The reflector is associated with the passive waveguide to cause captured light from the waveguide to be coupled into the active ring to trigger domination of unidirectional lasing in the active ring to generate light. | 11-19-2015 |