110 patents
Page 3 of 6
Utility
Fiber source with cascaded gain stages and/or multimode delivery fiber with low splice loss
6 Apr 21
An apparatus includes an optical gain fiber having a core, a cladding surrounding the core, the core and cladding defining an optical gain fiber numerical aperture, and a multimode fiber having a core with a larger radius than a radius of the optical gain fiber core, a cladding surrounding the core, the core and cladding of the multimode fiber defining a multimode fiber stable numerical aperture that is larger than the optical gain fiber numerical aperture, the multimode fiber being optically coupled to the optical gain fiber so as to receive an optical beam propagating in the optical gain fiber and to stably propagate the received optical beam in the multimode fiber core with low optical loss associated with the optical coupling.
Roger L. Farrow, Dahv A. V. Kliner
Filed: 6 Jul 18
Utility
Scalable high power fiber laser
6 Apr 21
A modular and scalable high-power fiber laser system is configurable to generate 1 kW or more of laser output, and includes one or more separable pump modules separately disposed from each other, each pump module including a plurality of fiber-coupled component pump sources optically combined by one or more fiber-based pump module pump combiners, each pump module providing one or more pump module fiber outputs, and a gain module separately disposed from the one or more separable pump modules and including one or more gain module pump fiber inputs optically coupled to corresponding ones of the pump module fiber outputs, and including a gain fiber optically coupled to the one or more gain module pump fiber inputs, the gain fiber configured to generate a gain module fiber output power scalable in relation to the number and power of said pump module fiber outputs coupled to the gain fiber.
Dahv A. V. Kliner
Filed: 5 Mar 18
Utility
Short pulse fiber laser for LTPS crystallization
23 Mar 21
Laser pulses from pulsed fiber lasers are directed to an amorphous silicon layer to produce a polysilicon layer comprising a disordered arrangement of crystalline regions by repeated melting and recrystallization.
Robert J. Martinsen, Scott R. Karlsen, Ken Gross
Filed: 10 Oct 19
Utility
Tandem pumped fiber laser or fiber amplifier
16 Mar 21
In an example, an apparatus to tandem pump a fiber laser or fiber amplifier may include a combiner; a power amplifier or a power oscillator, or a combination thereof, coupled to an output of the combiner; a seed laser to output light to the power amplifier or the power oscillator, or the combination thereof, via the combiner; and a tandem pump to generate light of a pump source signal, wherein the light of the pump source signal is output to the combiner to cladding pump the power amplifier or the power oscillator, or the combination thereof.
Manoj Kanskar
Filed: 11 Jan 18
Utility
High-power, single-mode fiber sources
9 Feb 21
An optical apparatus includes one or more pump sources situated to provide laser pump light, and a gain fiber optically coupled to the one or more pump sources, the gain fiber including an actively doped core situated to produce an output beam, an inner cladding and outer cladding surrounding the doped core and situated to propagate pump light, and a polymer cladding surrounding the outer cladding and situated to guide a selected portion of the pump light coupled into the inner and outer claddings of the gain fiber.
Dahv A. V. Kliner, Roger L. Farrow
Filed: 11 Dec 19
Utility
Back-reflection protection and monitoring in fiber and fiber-delivered lasers
26 Jan 21
A system includes an optical fiber situated to propagate a laser beam received from a laser source to an output of the optical fiber, a first cladding light stripper optically coupled to the optical fiber and situated to extract at least a portion of forward-propagating cladding light in the optical fiber, and a second cladding light stripper optically coupled to the optical fiber between the first cladding light stripper and the optical fiber output and situated to extract at least a portion of backward-propagating cladding light in the optical fiber.
Dahv A. V. Kliner
Filed: 20 May 19
Utility
Methods of and systems for processing using adjustable beam characteristics
28 Dec 20
A method of processing by controlling one or more beam characteristics of an optical beam may include: launching the optical beam into a first length of fiber having a first refractive-index profile (RIP); coupling the optical beam from the first length of fiber into a second length of fiber having a second RIP and one or more confinement regions; modifying the one or more beam characteristics of the optical beam in the first length of fiber, in the second length of fiber, or in the first and second lengths of fiber; confining the modified one or more beam characteristics of the optical beam within the one or more confinement regions of the second length of fiber; and/or generating an output beam, having the modified one or more beam characteristics of the optical beam, from the second length of fiber.
Ken Gross, Brian Victor, Robert Martinsen, Dahv A. V. Kliner, Roger Farrow
Filed: 29 Jan 18
Utility
Low size and weight, high power fiber laser pump
7 Dec 20
A device for cooling a laser diode pump comprising a Low Size Weight Power Efficient (SWAP) Laser Diode (LSLD) assembly, including a laser diode coupled to a submount on a first surface, the submount comprising a first thermally conductive material and a heatsink coupled to a second surface of the submount, wherein the heatsink comprises a second thermally conductive material, the heatsink comprising one or more members formed on a side opposite the coupled submount.
Manoj Kanskar, Johannes Boelen
Filed: 7 Oct 18
Utility
Power and brightness scaling in fiber coupled diode lasers using diodes with optimized beam dimensions
30 Nov 20
A number of beams that can be coupled into an optical fiber can be increased using emitted beams having greater divergence, thus providing increased beam power.
Zhigang Chen, David Martin Hemenway, Manoj Kanskar
Filed: 9 Jan 18
Utility
Spun round core fiber
16 Nov 20
Optical waveguide cores having refractive index profiles that vary angularly about a propagation axis of the core can provide single-mode operation with larger core diameters than conventional waveguides.
Joona Koponen, Changgeng Ye, Ossi Kimmelma
Filed: 10 Apr 19
Utility
Programmable waveform simulator
16 Nov 20
A system includes a laser system situated to generate a laser beam, a controller situated to control a path of the laser beam on a target and to control a variation of one or more waveforms associated with the laser beam, and a display coupled to the controller and situated to display a plurality of list data portions that include waveform parameters and a simulated waveform based on the plurality of list data portions, wherein the simulated waveform includes a plurality of simulated waveform portions that are predictive of the one or more waveforms.
Robert Joseph Foley
Filed: 31 Oct 16
Utility
CTE-matched silicon-carbide submount with high thermal conductivity contacts
9 Nov 20
Laser diode submounts include a SiC substrate on which a thick conductive layer is supplied to use in mounting a laser diode.
Manoj Kanskar, Zhigang Chen
Filed: 31 Jul 18
Utility
Diode laser apparatus with FAC lens out-of-plane beam steering
9 Nov 20
Apparatus include a first laser diode situated to emit a beam from an exit facet along an optical axis, the beam as emitted having perpendicular fast and slow axes perpendicular to the optical axis, a first fast axis collimator (FAC) optically coupled to the beam as emitted from the exit facet and configured to direct the beam along a redirected beam axis having a non-zero angle with respect to the optical axis of the first laser diode, a second laser diode situated to emit a beam from an exit facet of the second laser diode along an optical axis parallel to the optical axis of the first laser diode and with a slow axis in a common plane with the slow axis of the first laser diode, and a second fast axis collimator (FAC) optically coupled to the beam as emitted from the exit facet of the second laser diode and configured to direct the beam along a redirected beam axis having a non-zero angle with respect to the optical axis of the second laser diode.
Zhigang Chen, Manoj Kanskar, Shuang Li, Jim Zhang, Mark DeFranza, David Martin Hemenway, Eric Martin, Jay Small
Filed: 5 Feb 19
Utility
Low cost optical pump laser package
5 Oct 20
Laser diode packages include a rigid thermally conductive base member that includes a base member surface situated to support at least one laser diode assembly, at least one electrode standoff secured to the base member surface that has at least one electrical lead having a first end and a second end with the first end secured to a lead surface of the electrode standoff, and a lid member that includes a lid portion and a plurality of side portions extending from the lid portion and situated to be secured to the base member so as to define sides of the laser diode package, wherein at least one of the side portions includes a lead aperture situated to receive the second end of the secured electrical lead that is insertable through the lead aperture so that the lid member extends over the base member to enclose the laser diode package.
David C. Dawson, Wolfram Urbanek, David Martin Hemenway
Filed: 1 Apr 19
Utility
Fiber laser having variably wound optical fiber
21 Sep 20
Some embodiments may include a fiber laser, comprising: a variably wound optical fiber, wherein the variably wound optical fiber includes: a first length arranged in a plurality of first loops with a first separation distance between successive ones of the first loops; and a second length arranged in a plurality of second loops with a second separation distance between successive ones of the second loops; wherein the first separation distance between successive ones of the first loops is greater than the second separation distance between successive ones of the second loops; and packaging to remove heat generated by the optical fiber of the fiber laser during operation of the fiber laser, wherein the variably wound optical fiber is fixably mounted to a surface of a heat conductor of the packaging.
Aaron Ludwig Hodges, Nicolas Meacham, Dahv Kliner, Mitchell Ryan Reynolds
Filed: 10 Mar 19
Utility
Method, system and apparatus for higher order mode suppression
14 Sep 20
A laser diode vertical epitaxial structure, comprising a transverse waveguide comprising an active layer between an n-type semiconductor layer and a p-type semiconductor layer wherein the transverse waveguide is bounded by a lower index n-cladding layer on an n-side of the transverse waveguide and a lower index p-cladding layer on a p-side of the transverse waveguide, a lateral waveguide that is orthogonal to the transverse waveguide, wherein the lateral waveguide is bounded in a longitudinal direction at a first end by a facet coated with a high reflector (HR) coating and at a second end by a facet coated with a partial reflector (PR) coating and a higher order mode suppression layer (HOMSL) disposed adjacent to at least one lateral side of the lateral waveguide and that extends in a longitudinal direction.
Manoj Kanskar, Zhigang Chen
Filed: 26 Oct 17
Utility
Beam parameter product (bpp) control by varying fiber-to-fiber angle
7 Sep 20
An apparatus includes a laser system that includes a first fiber having an output end and situated to propagate a first laser beam with a first beam parameter product (bpp) and a second fiber having an input end spliced to the output end of the first fiber at a fiber splice so as to receive the first laser beam and to form a second laser beam having a second bpp that is greater than the first bpp, wherein the output end of the first fiber and the input end of the second fiber are spliced at a tilt angle so as to increase the first bpp to the second bpp.
David Logan, Ryan Hawke, David R. Balsley, Ron Stevens
Filed: 25 Sep 16
Utility
Passively aligned crossed-cylinder objective assembly
31 Aug 20
A cross-cylinder objective assembly includes a fast axis objective (FAO) situated along an optical axis for focusing an incident laser beam along a fast axis, a slow axis objective (SAO) situated along the optical axis for focusing the incident laser beam along a slow axis, and a lens cell having fast and slow axis objective receiving portions for registering the FAO and SAO at a predetermined spacing along the optical axis.
David Martin Hemenway, Aaron Brown, David C. Dawson, Kylan Hoener, Shelly Lin, Wolfram Urbanek
Filed: 12 May 16
Utility
Low swap two-phase cooled diode laser package
31 Aug 20
Apparatus include a conductive block including a base surface and a plurality of parallel stepped surfaces opposite the base surface and defining respective mounting surfaces situated to receive respective laser diodes having respective thermal paths defining a common thermal path distance from the mounting surfaces to the base surface, and a two-phase cooling unit including a coupling surface attached to the base surface of the conductive block and wherein the two-phase cooling unit is situated to conduct heat generated through the emission of laser beams from the laser diodes along the thermal paths.
Manoj Kanskar, Mark DeFranza
Filed: 23 Apr 18
Utility
Optical beam delivery device formed of optical fibers configured for beam divergence or mode coupling control
24 Aug 20
An optical beam delivery device is formed of optical fibers configured for beam divergence or mode coupling control.
Joona Koponen, Roger L. Farrow, Dahv A. V. Kliner
Filed: 27 Mar 18