Wayne S Pelouch

US Patent:

6381255, Apr 30, 2002

Filed:

Jan 18, 2000

Appl. No.:

09/484777

Inventors:

Paul Phillip Van Saarloos - Karrinyup, AU
Wayne Sheldon Pelouch - Erie CO

Assignee:

The Lions Eye Institute of Western Australia Incorporated

International Classification:

H01S 310

US Classification:

372 9, 372 21, 372 22, 372 34

Abstract:

A method and apparatus is provided for generating a laser beam of a wavelength suitable for ablating material. The apparatus includes a source of a laser beam of a wavelength which is not suitable for ablation and a frequency converter which uses harmonic generation to generate a laser beam of a suitable frequency. In preferred arrangements the frequency converter is a non-linear optical material that is maintained at a predetermined elevated temperature. In a preferred arrangement the pulse rate of the laser is selected to maintain the acceptance angle of the harmonic generator within predetermined limits.

US Patent:

6894828, May 17, 2005

Filed:

Oct 1, 2001

Appl. No.:

09/968974

Inventors:

Wayne S. Pelouch - McKinney TX, US
Duane D. Smith - Louisville CO, US
Narasimha S. Prasad - Erie CO, US

Assignee:

Coherent Technologies, Inc. - Louisville CO

International Classification:

H01S003/00

US Classification:

359333, 3593373, 359340, 359347

Abstract:

The present invention is directed to guided wave systems, beam transport and waveguide techniques. The invention may comprise passive or active, hollow and dielectric core self-imaging mode wave guide systems, beam amplifiers (), laser resonators (), beam transports, and waveguides. Embodiments may include rectangular cross-section waveguides, and preferably maintaining spatial profile of an input beam, such as a Gaussian beam, through the self-imaging period of the waveguide while unique new capabilities to mitigate non-linear distortions that corrupt spatial, spectral and temporal coherence and polarization. Additional aspects may include, for example, transport, amplification, phase/frequency control or modulation, deflection, conversion, synthetic aperture, distributed aperture, beam forming, beam steering, beam combining, power sampling, power combining and power splitting, among other features. Some embodiments may provide a self-imaging, multimode, waveguide () and self-imaging guided wave systems and beam transport. Embodiments of the present invention may further provide a method of self-imaging, multimode beam transport and other self-imaging wave guidance techniques.

US Patent:

7042631, May 9, 2006

Filed:

Apr 5, 2002

Appl. No.:

10/117445

Inventors:

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

Assignee:

Coherent Technologies, Inc. - Louisville CO

International Classification:

H01S 3/00
G02B 6/26

US Classification:

359333, 385 27, 385 39

Abstract:

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.

US Patent:

7193771, Mar 20, 2007

Filed:

Mar 9, 2006

Appl. No.:

11/372981

Inventors:

Duane D. Smith - Louisville CO, US
Wayne S. Pelouch - McKinney TX, US
Iain T. McKinnie - Superior CO, US
Josef R. Unternährer - Lafayette CO, US

Assignee:

Lockheed Martin Coherent Technologies, Inc. - Lousiville CO

International Classification:

H01S 3/00

US Classification:

359333, 359346, 372 66

Abstract:

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.

US Patent:

8111453, Feb 7, 2012

Filed:

Feb 13, 2009

Appl. No.:

12/371489

Inventors:

Wayne S. Pelouch - McKinney TX, US

Assignee:

Xtera Communications, Inc. - Allen TX

International Classification:

H01S 3/00

US Classification:

359334, 398157

Abstract:

A submarine optical repeater that shares optical pump power in multiple gain stages such that approximately the same wavelengths of optical pump is provided to each of the gain stages. Also, tilt control mechanism may adjust gain dependency on wavelength by adjusting the amount of optical pump power delivered to the optical gain stages. Residual optical pump power from both forward and backward Raman amplification may be used to power corresponding optically pumped amplifiers.

US Patent:

8111454, Feb 7, 2012

Filed:

Feb 13, 2009

Appl. No.:

12/371484

Inventors:

Wayne S. Pelouch - McKinney TX, US

Assignee:

Xtera Communications, Inc. - Allen TX

International Classification:

H04B 10/17
H01S 3/30
H04B 10/12

US Classification:

35934132, 359334, 3593413, 35934133, 3593374

Abstract:

Cross-distribution of the output pump power from optical pump units amongst multiple amplifier gain stages even in a single direction of an optical link in an optical communications system. For example, an optical pump unit may output optical pump power that is shared amongst a discrete optical amplification unit and a distributed optical amplification unit (such as a forward and/or backward Raman amplifier). Such sharing has the potential to increase reliability and/or efficiency of the optical communications system.

US Patent:

8145062, Mar 27, 2012

Filed:

Jan 7, 2009

Appl. No.:

12/350071

Inventors:

Wayne S. Pelouch - McKinney TX, US
Herve A. Fevrier - Plano TX, US

Assignee:

Xtera Communications, Inc. - Allen TX

International Classification:

H04B 10/12

US Classification:

398141, 398140, 398142, 398160, 398200

Abstract:

Optical amplification by combining two or more optical signals from separate optical fibers, amplifying the combined signal using an optical fiber, and separating the amplified signals into their constituent optical signals. The separated optical signals may then be sent further in the direction they had been heading before combination. This allows multiple optical signals to be amplified using a single optical amplifier, perhaps even in a single optical fiber. Although not required, the two optical signals may even be travelling in different directions.

US Patent:

8228598, Jul 24, 2012

Filed:

Jan 7, 2009

Appl. No.:

12/350070

Inventors:

Wayne S. Pelouch - McKinney TX, US
Herve A. Fevrier - Plano TX, US

Assignee:

Xtera Communications, Inc. - Allen TX

International Classification:

H04B 10/17
H01S 3/30
H04B 10/12

US Classification:

35934132, 359334, 3593413

Abstract:

An optical amplification mechanism that introduces optical pump(s) into one port of an optical circulator. The optical circulator directs the optical pumps from that port into another port that is coupled to the output of a gain stage. The optical pump(s) then pass from the output to the input of the gain stage while amplifying an optical signal passing from the input to the output of the gain stage. A residual amount of optical pump(s) that exits the input of the gain stage is reflected back into the input of the gain stage. The reflected optical pump(s) then further assists in the amplification of the optical signal. Other embodiments are also disclosed.