Mark J Weber

Address:

7388 Lawyer Rd, Cincinnati, OH 45244

VIN:

JM1CR293290358371

Make:

MAZDA

Model:

MAZDA5

Year:

2009

Address:

5521 Dry Rdg Rd, Cincinnati, OH 45252

Phone:

(513)3853625

VIN:

1GYFK63877R404809

Make:

CADILLAC

Model:

ESCALADE

Year:

2007

US Patent:

7218402, May 15, 2007

Filed:

Dec 4, 2003

Appl. No.:

10/727473

Inventors:

Stephen John Brosnan - San Pedro CA, US
Mark Ernest Weber - Hawthorne CA, US

Assignee:

Northrop Grumman Corporation - Los Angeles CA

International Classification:

G01B 11/02

US Classification:

356484

Abstract:

A hybrid optical/electronic wavefront sensor includes an electro-acoustical device used to upshift an optical reference signal. An optical test signal and the frequency upshifted optical reference signal are optically heterodyned to create a signal having a frequency equivalent to the beat frequency of the two signals, for example, the RF driving frequency of the Bragg cell. The optically heterodyned signal is then converted by way of a detector to an electronic signal having the same phase as the optical test signal. The output of the detector is a sinusoidal signal having the same phase as the phase of the optical test signal. This signal is filtered by way of an AC filter and mixed with a second clock signal, for example, a clock signal that is offset in frequency from the electro-acoustical drive signal by a frequency, for example, between 100 kHz and 1 MHz. These two signals are mixed by way of a mixer. The low frequency product of the mixer is passed by way of a filter and converted to a square wave by way of a comparator.

US Patent:

7502395, Mar 10, 2009

Filed:

Aug 8, 2006

Appl. No.:

11/500661

Inventors:

Eric Chiu-Tat Cheng - Torrance CA, US
Robert Rex Rice - Simi Valley CA, US
Michael Gordon Wickham - Rancho Palos Verdes CA, US
Mark Ernest Weber - Hawthorne CA, US

Assignee:

Northrop Grumman Space & Mission Systems Corp. - Los Angeles CA

International Classification:

G01B 9/02
H01S 3/13

US Classification:

372 32, 356477

Abstract:

A pulsed coherent fiber array laser system that includes a beam generating sub-system that provides a signal pulse beam having pulses of the desired duration that is split into several fiber channels. Optical leakage between the pulses in each split beam is measured and locked to a reference beam by a phase sensing circuit and phase adjusters so that the phase of each fiber pulsed beam is aligned with the phase of the reference beam. A pulse clipper or filter is employed to remove the pulses in the fiber beams so that they do not saturate the phase sensing circuit. The beam generating sub-system can employ any suitable combination of devices to generate the signal beam and the reference beam, including continuous wave master oscillators, amplitude modulators, frequency shifters, injection seed oscillators, Q-switched lasers, reference oscillators, frequency lockers, wavelength division multiplexers, time gated switches, etc.

US Patent:

20130105674, May 2, 2013

Filed:

Mar 13, 2012

Appl. No.:

13/419054

Inventors:

Gregory D. Goodno - Los Angeles CA, US
Mark E. Weber - Hawthorne CA, US

Assignee:

Northrop Grumman Systems Corporation - Falls Church VA

International Classification:

G01J 1/04
G02F 1/01

US Classification:

25022711, 250225

Abstract:

A multichannel polarization stabilizer including a mixing device responsive to a sample beam and a reference beam that provides an in-phase signal including the mixed sample beam and reference beam having a relative phase of 0 and a quadrature phase signal including the mixed sample beam and reference beam having a relative phase of 90. The stabilizer also includes a photodetector responsive to the quadrature phase signal that converts the quadrature phase signal to a quadrature phase electrical signal. A polarization demultiplexer circuit receives the quadrature phase electrical signal and measures the amplitude of a frequency tone in the sample beam and provides a polarization amplitude signal. A polarization controller receives the polarization amplitude signal and controls the reference beam to maximize the polarization amplitude signal.

US Patent:

20130107257, May 2, 2013

Filed:

Oct 29, 2012

Appl. No.:

13/663270

Inventors:

Northrop Grumman Systems Corporation - Fallschurch VA, US
Mark E. Weber - Hawthorne CA, US

Assignee:

NORTHROP GRUMMAN SYSTEMS CORPORATION - Fallschurch VA

International Classification:

G02F 1/01
G01J 1/04

US Classification:

356364

Abstract:

A multichannel optical system including a mixing device responsive to a sample beam and a reference beam that provides an in-phase signal including the mixed sample beam and reference beam having a relative phase of 0 and a quadrature phase signal including the mixed sample beam and reference beam having a relative phase of 90. The system also includes a photodetector responsive to the quadrature phase signal that converts the quadrature phase signal to a quadrature phase electrical signal. A polarization demultiplexer circuit receives the quadrature phase electrical signal and measures the amplitude of a unique time-dependent phase dither profile having a zero time-averaged mean and a zero time-averaged correlation to the other phase dither profiles and provides a polarization amplitude signal. A polarization controller receives the polarization amplitude signal and controls the reference beam to maximize the polarization amplitude signal.

US Patent:

20130336344, Dec 19, 2013

Filed:

Jun 13, 2012

Appl. No.:

13/495374

Inventors:

Stephen P. Palese - Redondo Beach CA, US
Eric C. Cheung - Torrance CA, US
Gregory D. Goodno - Los Angeles CA, US
Chun-Ching Shih - Palos Verdes Estates CA, US
Mark E. Weber - Hawthorne CA, US

International Classification:

H01S 3/10

US Classification:

372 20

Abstract:

A pulsed fiber array laser system that has actively stabilized coherent beam combination (CBC) is disclosed. The active stabilization is accomplished using both piston phase control and intra-pulse phase control, allowing a much greater increase in pulse energy. Further stabilization using intra-pulse amplitude control is also disclosed. A chirp profile can be written on the output pulse to enable specific applications. An amplitude profile of the amplifier array may optionally be tailored to match to a reference electrical pulse. Using the current invention, a much smaller number of amplifier chains will be needed to achieve certain pulse energy, resulting in a system with lower complexity, lower cost, smaller size, less weight, and higher reliability.

US Patent:

6069730, May 30, 2000

Filed:

Aug 14, 1998

Appl. No.:

9/134466

Inventors:

Hagop Injeyan - Glendale CA
Randall J. St. Pierre - Santa Monica CA
Mark E. Weber - Hawthorne CA

Assignee:

TRW Inc. - Redondo Beach CA

International Classification:

H01S 300

US Classification:

359334

Abstract:

A system and method for monitoring the mode of an input beam to a phase conjugated master oscillator power amplifier (PC MOPA). In order to prevent catastrophic optical damage to the MOPA components, the method and system shuts down the master oscillator when a multi-mode input beam is detected.

US Patent:

60345608, Mar 7, 2000

Filed:

Apr 29, 1998

Appl. No.:

9/069272

Inventors:

Mark E. Weber - Hawthorne CA

Assignee:

TRW Inc. - Redondo Beach CA

International Classification:

G06F 104

US Classification:

327291

Abstract:

A digital pulse generator having a high-speed clock (22) and two clock pulse counters (10 and 12), one (10) to time the start of each pulse and one (12) to time the pulsewidth, based on clock counts supplied from a microcontroller (14) to which a user inputs desired pulse parameters. The combination of the high-speed clock (22) and the clock pulse counters (10 and 12) produces precise and reliable output pulses for a variety of applications, and at a relatively low cost. Operation may be selected to be in internal mode, in which successive pulses are produced at a desired period, or an external mode, in which a pulse is generated after a selected time delay. A trigger signal input circuit (48, 32) and a trigger signal output circuit (42), both with adjustable impedances, facilitate interconnection of multiple digital pulse generators as needed for a given application.

US Patent:

20200241383, Jul 30, 2020

Filed:

Mar 11, 2019

Appl. No.:

16/298618

Inventors:

- FALLS CHURCH VA, US
ERIC C. CHEUNG - RANCHO PALOS VERDES CA, US
MARK E. WEBER - HAWTHORNE CA, US

International Classification:

G02F 1/39
G02F 1/035
H01S 3/23
H01S 3/067

Abstract:

An electro-optical modulator (EOM) array that simultaneously modulates a plurality of optical beams. The EOM array has particular application for use in a seed beam source for an SBC fiber laser amplifier system, where the seed beam source includes a plurality of master oscillators each providing an optical seed beam at a different wavelength on a fiber. The EOM array has a common substrate, a plurality of parallel waveguides and an electrode structure, where each waveguide is coupled to one of the fibers to receive one of the seed beams. An RF source provides an RF drive signal to the electrode structure that modulates the seed beams. The fiber laser amplifier system amplifies each of the seed beams from the EOM array, and includes an SBC grating that spatially combines the amplified beams at the different wavelengths so that they are directed in the same direction as an output beam.