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Coherent (COHR)

48 patents

Page 2 of 3
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
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
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
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
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
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
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
Utility
Excimer Laser with Uniform Beam
23 Sep 20
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: 19 Feb 20
Utility
Optoelectronic Assembly
16 Sep 20
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: 11 Oct 18
Utility
Apparatus for Forming a Homogeneous Intensity Distribution with Bright or Dark Edges
16 Sep 20
A beam homogenizer for transforming a beam of laser-radiation into a flat-top intensity distribution having brighter or darker edges comprises a first lens array, a second lens array, and a positive lens.
Frank SIMON, Ludwig SCHWENGER, Andrea CAPRARA
Filed: 23 Feb 20
Utility
Laser Welding Method
12 Aug 20
A method for laser keyhole welding of metal alloys is disclosed.
Ryan BRESCOE, Jean-Philippe LAVOIE
Filed: 9 Feb 20
Utility
Laser Apparatus for Cutting Brittle Material
12 Aug 20
An apparatus for cutting brittle material comprises an aspheric focusing lens, an aperture, and a laser-source generating a beam of pulsed laser-radiation.
Michael R. GREENBERG, David M. GAUDIOSI, Jochen DEILE
Filed: 27 Apr 20
Utility
Conductively-cooled Slab Laser
22 Jul 20
A carbon dioxide gas-discharge slab-laser is assembled in a laser-housing.
Eric R. MUELLER, Vernon A. SEGUIN, Christian SHACKLETON
Filed: 1 Apr 20
Utility
Diode-pumped Solid-state Laser Apparatus for Laser Annealing
22 Jul 20
Laser annealing apparatus includes a plurality of frequency-tripled solid-state lasers, each delivering an output beam of radiation at a wavelength between 340 nm and 360 nm.
Norman HODGSON, Andrea CAPRARA, Kai SCHMIDT
Filed: 12 Jan 20
Reissue
Laser power and energy sensor utilizing anisotropic thermoelectric material
1 Jun 20
A laser-radiation sensor includes a copper substrate on which is grown an oriented polycrystalline buffer layer surmounted by an oriented polycrystalline sensor-element of an anisotropic transverse thermoelectric material.
Robert Semerad, Erik Krous, James Schloss
Filed: 4 May 16
Utility
Laser apparatus for cutting brittle material
1 Jun 20
An apparatus for cutting brittle material comprises an aspheric focusing lens, an aperture, and a laser-source generating a beam of pulsed laser-radiation.
Michael R. Greenberg, David M. Gaudiosi, Jochen Deile
Filed: 14 Nov 16
Utility
Achromatic astigmatic anamorphic objective
25 May 20
An anamorphic three-element objective lens projects a plurality of beams of different wavelengths and different diameters into an elongated focal spot in a working-plane.
Michele Wayne Winz, Lei Meng
Filed: 29 Jan 18
Utility
Single Crystal optical parametric amplifier
4 May 20
An apparatus for generating visible light including a laser source emitting a fundamental beam, an optically nonlinear crystal, and a seed source emitting a seed beam.
Dmitri Simanovski, Andrei Starodoumov, Norman Hodgson
Filed: 8 May 19
Utility
Conductively-cooled slab laser
4 May 20
A carbon dioxide gas-discharge slab-laser is assembled in a laser-housing.
Eric R. Mueller, Vernon A. Seguin, Christian Shackleton
Filed: 6 Mar 18
Utility
Third-harmonic Generating Apparatus for Laser-radiation
29 Apr 20
A third-harmonic conversion arrangement includes a second-harmonic generating crystal and a third-harmonic generating crystal arranged in a polarization loop.
Andrea CAPRARA
Filed: 25 Oct 18
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