193 patents
Page 3 of 10
Utility
Strain-engineered Cladding Layer for Optimized Active Region Strain and Improved Laser Diode Performance
17 Nov 22
Some embodiments may include a laser diode having a strain-engineered cladding layer for optimized active region strain and improved laser diode performance.
Zhigang Chen, Manoj Kanskar
Filed: 15 Sep 20
Utility
Scanner drift compensation for laser material processing
15 Nov 22
A scanned optical beam is divided so as to form a set of scanned subbeams.
Scott R. Karlsen, Robert J. Martinsen
Filed: 16 Jan 20
Utility
Method, system and apparatus for higher order mode suppression
8 Nov 22
A laser diode, comprising a transverse waveguide that is orthogonal to the lateral waveguide comprising an active layer between an n-type waveguide layer and a p-type waveguide layer, wherein the transverse waveguide is bounded by an n-type cladding layer on an n-side and p-type cladding layer on a p-side and a lateral waveguide bounded in a longitudinal direction at a first end by a high reflector (HR) coated facet and at a second end by a partial reflector (PR) coated facet, the lateral waveguide further comprising a buried higher order mode suppression layer (HOMSL) disposed beneath the p-cladding within the lateral waveguide or on one or both sides of the lateral waveguide or a combination thereof, wherein the HOMSL extends in a longitudinal direction from the HR facet a length less than the distance between the HR facet and the PR facet.
Manoj Kanskar, Zhigang Chen, Nicolas Biekert
Filed: 13 Aug 20
Utility
Cladless Fiber for Fiber Laser Pump and Combiner
27 Oct 22
Some embodiments may include a packaged laser diode assembly, comprising: a length of optical fiber having a core and a polymer buffer in direct contact with the core, the length of optical fiber having a first section and a second section, the first section of the length of optical fiber including a tip of an input end of the optical fiber, wherein the polymer buffer covers only the second section of the first and second sections; one or more laser diodes to generate laser light; means for directing a beam derived from the laser light into the input end of the length of optical fiber; a light stripper attached to the core in the first section of the length of optical fiber.
Shuang LI, Jiamin Zhang, Nanoj Kanskar, Chendong Bai
Filed: 16 Sep 20
Utility
Fiber-based Optical Modulator
20 Oct 22
Systems and methods for temporal amplitude modulation of an optical beam.
Dahv A.V. Kliner
Filed: 5 Aug 20
Utility
Laser patterning skew correction
11 Oct 22
A laser patterning alignment method provides a way to position a target at a working distance in a laser patterning system such that fiducial marks on the target are positioned in view of at least three laser patterning system cameras, and with each laser patterning system camera, to locate a fiducial mark on the target and sending location data of the located fiducial mark to a controller, to determine corrections required to align expected fiducial mark locations with the sent fiducial mark location data, and to adjust the laser patterning system with the determined corrections.
Vito P. Errico, Roger C. Shipman
Filed: 13 Apr 20
Utility
Method and System for Reducing Returns from Retro-reflections In Active Illumination System
22 Sep 22
Systems and methods for reducing or eliminating undesired effects of retro-reflections in imaging are disclosed.
Bodo Schmidt, Steve Herman
Filed: 7 Mar 22
Utility
Fine-scale Temporal Control for Laser Material Processing
1 Sep 22
Methods include directing a laser beam to a target along a scan path at a variable scan velocity and adjusting a digital modulation during movement of the laser beam along the scan path and in relation to the variable scan velocity so as to provide a fluence at the target within a predetermined fluence range along the scan path.
Robert J. Martinsen, Qi Wang
Filed: 16 May 22
Utility
Low cost optical pump laser package
23 Aug 22
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: 17 Sep 20
Utility
Methods, Systems and Apparatus for Reducing Waste Heat And/or Light In Fiber Lasers
11 Aug 22
In an example, the disclosed technology includes a laser source, comprising a plurality of pump elements configured to generate laser light, a controller coupled to the plurality of pump elements, configured to select individual drive current levels to be provided to respective ones of the plurality of pump elements responsive to a request for a laser power level and at least one power supply coupled to one or more of the plurality of pump elements for driving individual pump elements at selected drive currents.
Tyson L. LOWDER, Robert Joseph FOLEY, Michael C. NELSON
Filed: 15 Jun 20
Utility
Optimization of high resolution digitally encoded laser scanners for fine feature marking
9 Aug 22
Disclosed herein are laser scanning systems and methods of their use.
Ken Gross
Filed: 10 Feb 20
Utility
Functionally Homogenized Intensity Distribution for Additive Manufacturing or Other Industrial Laser Processing Applications
4 Aug 22
Disclosed are techniques for generating a laser output beam having a functionally homogenized intensity distribution.
Juan Lugo, Aaron W. Brown, Jay Small, Robert J. Martinsen, Dahv A.V. Kliner
Filed: 24 Jun 20
Utility
Calibration test piece for galvanometric laser calibration
19 Jul 22
Some embodiments may include a galvanometric laser system, comprising: a laser device to generate a laser beam; an X-Y scan head module to position the laser beam on a work piece, the X-Y scan head module including a laser ingress to receive the laser beam and a laser egress to output the laser beam; a support platen located below the laser egress; an in-machine imaging system integrated with the galvanometric laser, wherein a camera of the in-machine imaging system is arranged to view a surface of an object located on the support platen using one or more optical components of the X-Y scan head module to generate assessment data associated with a calibration of the X-Y scan head module by imaging the surface of the object, wherein a calibration fiducial is located on the surface of the object.
Aaron Brown, Jay Small, Robert J. Martinsen
Filed: 30 Aug 19
Utility
Fiber Laser Insensitive Aiming Laser
14 Jul 22
A laser assembly comprising a multi-clad fiber optically coupled to a light source configured to emit optical radiation at a first wavelength and a protective element disposed between the light source and the multi-clad fiber so as to prevent a portion of backward-propagating optical radiation at a second wavelength from coupling into the light source.
Dahv A.V. KLINER, C. Geoffrey FANNING
Filed: 4 Jun 20
Utility
Tandem Pumped Fiber Amplifier
16 Jun 22
In an example, a tandem pumped fiber amplifier may include a seed laser, a first section coupled to an output of the seed laser, and a second section coupled to an output of the first section.
Manoj Kanskar, Jiamin Zhang
Filed: 4 Mar 22
Utility
Tandem Pumped Fiber Amplifier
9 Jun 22
In an example, a tandem pumped fiber amplifier may include a seed laser, one or more diode pumps, and a single or plural active core fiber.
Manoj Kanskar, Jiamin Zhang
Filed: 17 Dec 21
Utility
Single mode LMA (large mode area) fiber
7 Jun 22
Large mode area optical fibers include cores that are selected to be smaller than a core size associated with a minimum mode field diameter of a lowest order mode.
Manoj Kanskar
Filed: 1 Apr 19
Utility
Fine-scale temporal control for laser material processing
17 May 22
Methods include directing a laser beam to a target along a scan path at a variable scan velocity and adjusting a digital modulation during movement of the laser beam along the scan path and in relation to the variable scan velocity so as to provide a fluence at the target within a predetermined fluence range along the scan path.
Robert J. Martinsen, Qi Wang
Filed: 12 Sep 19
Utility
Optical Fiducial Generation for Galvanometric Scanner Calibration
12 May 22
An apparatus includes an optical source situated to produce a fiducial source beam, and an optical fiducial pattern generator situated to produce with the fiducial source beam at least one transient optical fiducial on a laser processing target that is in a field of view of a laser scanner situated to scan a laser processing beam across the laser processing target, so that a positioning of the laser processing beam on the laser processing target becomes adjustable relative to the at least one transient optical fiducial.
Jay Small, Robert J. Martinsen
Filed: 14 Oct 21
Utility
System and Method for Glint Reduction
5 May 22
Systems and methods for reducing the deleterious effects of specular reflections (e.g., glint) on active illumination systems are disclosed.
Bodo Schmidt, Paul S. Banks, Charles Stewart Tuvey
Filed: 13 Jan 22