72 patents
Page 2 of 4
Utility
Spectrally Broadening Ultrashort-pulse Compressor
14 Jul 22
An ultrashort-pulse compressor includes (a) one or more bulk-optics intersecting a propagation path of an ultrashort-pulsed laser beam multiple times to spectrally broaden a pulse of the laser beam during each of multiple passes through the bulk-optic(s), (b) one or more dispersive optics for compressing a duration of the pulse after each of the multiple passes, and (c) a plurality of focusing elements for focusing the laser beam between the multiple passes.
Nick HARTMANN, Michael HERTWIG
Filed: 13 Jan 21
Utility
Nonlinear frequency conversion with variable average power and stable heat load
5 Jul 22
A system for nonlinear frequency conversion includes an acousto-optic modulator for diffracting a portion of an input laser beam as a first-order beam and transmitting a non-diffracted portion of the input laser beam as a zeroth-order beam.
Markus Lührmann, Christoph O. Schäfer, Stefan Niedlich, Ralf Knappe
Filed: 15 Apr 21
Utility
Laser Beam Wavefront Correction with Adaptive Optics and Mid-field Monitoring
26 May 22
A system for correcting the wavefront of a laser beam includes a beamsplitter for splitting off a fraction of the laser beam to be used as a diagnostic beam, a focusing element for bringing the diagnostic beam to a focus, a measurement subsystem for measuring sizes of the diagnostic beam at upstream and/or downstream locations with respect to a nominal location of the focus, and at least one adaptive optic, located upstream from the beamsplitter, for correcting the wavefront of the laser beam at least partly based on the measured sizes of the diagnostic beam at the upstream and/or downstream locations.
Rüdiger VON ELM
Filed: 23 Nov 20
Utility
Devices for Thermally Actuating Deformable Mirror, and Associated Manufacturing Methods
26 May 22
A device for thermally actuating a deformable mirror includes a monolithic block that includes a mirror plate having a front face forming or configured to support a mirror, a base, and a one-dimensional array of thermally expandable actuators.
Rüdiger Von Elm
Filed: 23 Nov 20
Utility
Apparatus for forming a homogeneous intensity distribution with bright or dark edges
17 May 22
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: 24 Feb 20
Utility
Conductively-cooled slab laser
17 May 22
A carbon dioxide gas-discharge slab-laser is assembled in a laser-housing.
Eric R. Mueller, Vernon A. Seguin, Christian Shackleton
Filed: 2 Apr 20
Utility
Multipass Laser Amplifier and No-optical-power Beam Steering Element
28 Apr 22
A multipass laser amplifier includes a mirror, a mirror device, a gain crystal, and refractive or diffractive beam-steering element.
Christoph O. SCHÄFER, Louis MCDONAGH, Ralf KNAPPE
Filed: 23 Oct 20
Utility
Laser wavelength stabilization apparatus
22 Mar 22
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
APPARATUS AND METHOD FOR GENERATING 780 nm ULTRASHORT-PULSED LASER RADIATION
17 Mar 22
An erbium fiber laser produces a beam of ultrashort laser pulses having a center wavelength greater than 780 nanometers, an average power greater than 0.5 watt, and a pulse duration less than 200 femtoseconds.
Lee CAIRNS
Filed: 13 Sep 21
Utility
780 nm ULTRASHORT-PULSED FIBER LASER
17 Mar 22
An erbium fiber laser produces a beam of ultrashort laser pulses having a center wavelength greater than 780 nanometers, an average power greater than 0.5 watt, and a spectral bandwidth compressible to a pulse duration of less than 200 femtoseconds.
Sean REILLY, Lee CAIRNS, Volker LEONHARDT
Filed: 13 Sep 21
Utility
Pulsed Laser with Intracavity Frequency Conversion Aided by Extra-cavity Frequency Conversion
17 Feb 22
A pulsed third-harmonic laser system includes a pulsed laser, an extra-cavity nonlinear crystal, and an intracavity nonlinear crystal.
Qize SHU
Filed: 14 Aug 20
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
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
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
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
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
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
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
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
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