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Coherent (COHR)

50 patents

Page 3 of 3
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
Utility
Mitigating Low Surface Quality
26 Feb 20
Methods and apparatuses are disclosed for laser processing.
Urs EPPELT, Ludger MÜLLERS, Anthony S. Lee
Filed: 21 Aug 18
Utility
Wavelength Discriminating Slab Laser
26 Feb 20
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: 4 Nov 19
Utility
Separation and Release of Laser-processed Brittle Material
29 Jan 20
A method for separating and releasing a closed-form piece from a workpiece made of a brittle material is disclosed.
Stefan GRONINGER, Manfred SCHADI, Ludger MÜLLERS, Jürgen SERBIN
Filed: 10 Jul 19
Utility
Aberration compensated diode-laser stack
20 Jan 20
Optical output beams from a vertical stack of diode-laser bars are focused by a simple focusing lens on an optical axis of the lens.
Athanasios Chryssis, Geunmin Ryu, David Schleuning
Filed: 24 Jan 17
Utility
High power sub-400 femtosecond MOPA with solid-state power amplifier
13 Jan 20
Laser-apparatus includes a fiber-MOPA arranged to deliver amplified seed optical pulses having a wavelength of about 1043 nanometers to a multi-pass ytterbium-doped yttrium aluminum garnet solid-state optical amplifier for further amplification.
Andrei Starodoumov, Norman Hodgson
Filed: 30 Aug 17
Utility
Modular ultraviolet pulsed laser-source
30 Dec 19
Apparatus for generating ultraviolet (UV) pulsed laser-radiation for material-processing includes a laser-source providing infrared (IR) pulsed laser-radiation and a frequency-conversion module.
Ralf Knappe
Filed: 30 Jul 17
Utility
Laser-mopa with Burst-mode Control
18 Dec 19
A laser master-oscillator power-amplifier (MOPA) is operated to provide successive bursts of ultrashort pulses.
Gregory DUMOND
Filed: 17 Jun 18
Utility
Wavelength discriminating slab laser
9 Dec 19
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 Sep 17
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