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COHR Coherent

APP
Utility
High-radiance Wavelength-agile Incoherent Light-source
27 Jan 22
A source of high-radiance broad-band incoherent light includes an optical waveguide, having a core made of phosphor granules embedded in a matrix of glass and a cladding.
Sergei V. GOVORKOV, John H. JERMAN
Filed: 10 Dec 19
APP
Utility
Laser Welding Method
25 Nov 21
A method for laser keyhole welding is disclosed to weld two pieces together made of a metal alloy.
Ryan BRESCOE
Filed: 22 May 20
GRANT
Utility
Excimer laser with uniform beam
23 Nov 21
Fine-structure in the transverse mode of an excimer laser beam is minimized by having a plurality of resonator mirrors located at each end of a linear excimer laser.
Igor Bragin, Timur Misyuryaev, Paul Van Der Wilt
Filed: 20 Feb 20
GRANT
Utility
Beam forming with focus location adjustment
9 Nov 21
An apparatus includes a beam source, beam forming optics, a first focusing lens having a focal length, a second focusing lens having a focal length similar to the focal length of the first lens, and a lens translator configured to move the second lens transversely relative to the beam forming optics and to the first lens, and thereby move the elongated focus transversely.
Lei Meng, Michele Wayne Winz
Filed: 24 Apr 19
GRANT
Utility
Wavelength discriminating slab laser
9 Nov 21
A CO2 laser that generates laser-radiation in just one emission band of a CO2 gas-mixture has resonator mirrors that form an unstable resonator and at least one spectrally-selective element located on the optical axis of the resonator.
Peter Rosenthal, Jens Schüttler, Florian Engel, Gongxue Hua
Filed: 5 Nov 19
GRANT
Utility
High repetition rate seed laser
19 Oct 21
A fiber laser producing a beam of ultrashort laser pulses at a repetition rate greater than 200 MHz includes a linear fiber resonator and a fiber branch.
Norman Hodgson, Dmitri Simanovski
Filed: 6 Jun 19
APP
Utility
Second-harmonic Generation Crystal
26 Aug 21
An optic produces a beam of ultraviolet laser radiation from a beam of visible laser radiation and spatially separates the ultraviolet laser beam from the visible laser beam.
Wolf SEELERT, Rüdiger VON ELM
Filed: 26 Feb 20
GRANT
Utility
Second-harmonic generation crystal
24 Aug 21
An optic produces a beam of ultraviolet laser radiation from a beam of visible laser radiation and spatially separates the ultraviolet laser beam from the visible laser beam.
Wolf Seelert, Rüdiger Von Elm
Filed: 26 Feb 20
APP
Utility
Radio-frequency Excited Gas Laser
5 Aug 21
A radio-frequency excited carbon dioxide (CO2) or carbon monoxide (CO) gas laser includes two electrodes, which have passivated surfaces, within a sealed housing.
Leon A. NEWMAN, Michael Leigh ERMOLD, James HYLAND, Thomas V. HENNESSEY, JR., Lanny LAUGHMAN
Filed: 28 Jan 21
GRANT
Utility
Laser-MOPA with burst-mode control
3 Aug 21
A laser master-oscillator power-amplifier (MOPA) is operated to provide successive bursts of ultrashort pulses.
Gregory Dumond
Filed: 18 Jun 18
GRANT
Utility
Method of closed form release for brittle materials using burst ultrafast laser pulses
6 Jul 21
A method for machining and releasing closed forms from a transparent, brittle substrate includes using a burst of ultrafast laser pulses to drill patterns of orifices in the substrate.
S. Abbas Hosseini
Filed: 11 Nov 14
APP
Utility
Device for the Manufacture and Surface Processing of a Three-dimensional Object
17 Jun 21
This invention discloses a device 100 for the manufacture of three-dimensional objects by means of the sequential consolidation of layers of pulverized consolidatable build-up material at locations corresponding with the respective cross-section of the object, by means of radiation, in particular laser radiation.
Andreas LOHNER, Markus WOLF
Filed: 25 Oct 18
GRANT
Utility
Laser material processing distance gauge
25 May 21
Apparatus for distance gauging in laser material processing includes a source of laser-radiation, an electrically-conductive focusing assembly, a constant-current source, and a voltmeter.
Keith Jefferies
Filed: 2 Nov 17
APP
Utility
Laser Welding Method and Device
20 May 21
The invention relates to a method for laser welding workpieces (W), a laser beam (L) directed onto a workpiece surface having such a radiation intensity that the workpiece material of the at least one workpiece (W) to be welded is melted in the region of the laser focus (F), a vapor capillary (D) which is at least partly surrounded by a molten bath (S) forming in the region of the laser focus (F).
Oliver FORSTER, Peter KALLAGE, Jens SCHÜTTLER
Filed: 19 Mar 19
GRANT
Utility
Optoelectronic assembly
4 May 21
The invention relates to an optical assembly (100) comprising a first optical fiber (101) propagating coherent light in a predetermined direction (P) into an input end (110) of the optical assembly (100), said optical fiber having a core and a cladding; a heat sink (111) surrounding the optical fiber (101) at the input end (110); and a lens (120) arranged after the heat sink (111) in the propagating direction (P).
Simon Aleryd, Stuart Campbell, Olof Sallhammar
Filed: 12 Oct 18
GRANT
Utility
Polarized fiber-laser
9 Mar 21
A fiber-laser includes a gain-fiber in a laser-resonator.
Qi-Ze Shu, Andrea Caprara
Filed: 5 Jun 18
APP
Utility
Optical Parametric Chirped-pulse Amplifier
25 Feb 21
An optical parametric chirped-pulse amplifier includes first and second optical parametric amplifier stages that successively amplify a stretched signal beam.
Dmitri SIMANOVSKI, Norman HODGSON
Filed: 20 Aug 19
APP
Utility
Laser Wavelength Stabilization Apparatus
28 Jan 21
A wavelength sensor for wavelength stabilization of a laser beam includes an etalon placed in the laser beam and tilted with respect to the laser beam.
Qize SHU
Filed: 22 Jul 19
APP
Utility
High Repetition Rate Seed Laser
9 Dec 20
A fiber laser producing a beam of ultrashort laser pulses at a repetition rate greater than 200 MHz includes a linear fiber resonator and a fiber branch.
Norman HODGSON, Dmitri SIMANOVSKI
Filed: 5 Jun 19
APP
Utility
Beam Forming with Focus Location Adjustment
28 Oct 20
An apparatus includes a beam source, beam forming optics, a first focusing lens having a focal length, a second focusing lens having a focal length similar to the focal length of the first lens, and a lens translator configured to move the second lens transversely relative to the beam forming optics and to the first lens, and thereby move the elongated focus transversely.
Lei MENG, Michele Wayne WINZ
Filed: 23 Apr 19
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