Josef R Unternahrer

6670577, Dec 30, 2003

Sep 28, 2001

09/965320

Phillip Randall Staver - Hagaman NY
William Taylor Lotshaw - Bethesda MD
Michael Francis X Gigliotti, Jr. - Scotia NY
Josef Robert Unternahrer - Lafayette CO
Robert Snee Gilmore - Charlton NY
Thomas James Batzinger - Burnt Hills NY

General Electric Company - Niskayuna NY

B23K 2600

21912185

A method for laser shock peening a surface is disclosed. A laser beam pulse from a laser apparatus is produced. The laser pulse has a cross-section taken perpendicular to the laser beam, a fluence profile across the cross-section. The pulse against an area on said surface. The fluence profile is controlled such that process induced defects are reduced.

7313299, Dec 25, 2007

Mar 9, 2006

11/371891

Scott E. Christensen - Boulder CO, US
Iain T. McKinnie - Denver CO, US
Josef Robert Unternahrer - Lafayette CO, US

Lockheed Martin Coherent Technologies, Inc. - Louisville CO

G02B 6/26

385 27, 385 28, 385 43

A system for transmitting the spatial profile of laser beams with particular applicability to coherently combine laser beams into one beam. The system includes a tapered waveguide with an inlet and outlet at ends of two waveguide elements each having a reflective surface facing into the waveguide. The reflective surfaces are non-parallel such that the inlet height is different than the outlet height, e. g. , inlet height greater than outlet height. The system includes a beam input assembly controlling phases of laser beams input at the waveguide inlet, and the phases of the beams are locked to a substantially single phase. The waveguide length is selected to produce at the waveguide outlet a coherently combined laser beam from the input beams. The beam input assembly includes a laser beam source, a beam splitter generating lower power beams from source beams, and phase adjusters for controlling the phase of each input beam.

7319708, Jan 15, 2008

Feb 22, 2005

11/062992

John E. Koroshetz - Orlando FL, US
Josef R. Unternahrer - Lafayette CO, US

Lockheed Martin Coherent Technologies, Inc. - Louisville CO

H01S 3/11
H01S 3/113

372 10, 372 11

A passive Q-switch element is disclosed that permits operating a laser with a variable pulse repetition frequency (PRF). The Q-switch comprises two wedges of material, one made from saturable absorber material, the other from transparent material, with the two wedges mounted together to form a constant optical thickness block. By translating the block transversely to a laser beam the amount of saturable absorber material seen by the laser beam is altered and as a result the PRF of the laser is varied.

20030063884, Apr 3, 2003

Apr 5, 2002

10/117445

Duane Smith - Louisville CO, US
Wayne Pelouch - McKinney TX, US
Narasimha Prasad - Erie CO, US
Josef Unternahrer - Lafayette CO, US
John Koroshetz - Broomfield CO, US
Iain McKinnie - Superior CO, US

G02B006/10

385/129000

Power scalable, rectangular, multi-mode, self-imaging, waveguide technologies are used with various combination of large aperture configurations, Gaussian and super-Gaussian beam profiles, thermal management configurations flared and tapered waveguide shapes, axial or zig-zag light propagation paths, diffractive wall couplers and phase controller flexibility phased arrays beam combiners and separators and other features to generate, transport, and deliver high power laser beams.