Neal T Nomiyama

US Patent:

43935176, Jul 12, 1983

Filed:

Sep 30, 1980

Appl. No.:

6/192276

Inventors:

Rudolph G. Buser - Wall NJ
Gregory R. Osche - Acton MA
Neal T. Nomiyama - Reston VA
Robert S. Rohde - Springfield VA

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

H04B 900

US Classification:

455608

Abstract:

The tail of a carbon-dioxide (CO. sub. 2) transverse electrode discharge at mospheric pressure (TEA) laser pulse optical signal is pulse code modulated by a Pockels Cell. A modulation depth of 100% is obtained to prevent high false alarm rates under dynamic transmission conditions. The device external to the laser cavity will extend the capabilities of the CO. sub. 2 TEA laser by using a tail for information transfer while preserving the gain switch spike for rangefinding. A high repetition rate is achieved using a power supply that electrically charges and discharges the Pockels Cell which, in turn, activates the polarization switch.

US Patent:

43803911, Apr 19, 1983

Filed:

Sep 30, 1980

Appl. No.:

6/192275

Inventors:

Rudolph G. Buser - Wall NJ
Robert S. Rohde - Springfield VA
Neal T. Nomiyama - Reston VA

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

G01C 308
G02B 514
H01S 300
G06K 900

US Classification:

356 5

Abstract:

A short pulse CO. sub. 2 transverse electrode discharge at atmospheric pressure (TEA) laser device for ranging and target identification which uses an electro-optics Pockels Cell modulator to chop the transmitted laser beam into a train of 0. 5 to 2 nanosecond pulses and a broadband receiver for observing the time broadened reflected signals that results from integration of the finite depths of the targets. Because a target has a unique three dimensional profile, the target signature may be identified by comparison with known signatures previously generated by computer simulation or field measurements. The present shortened pulse laser transmitter and a plurality of receiver field-of-view options meet the temporal and signal-to-noise requirements for pattern recognition. The device can be used to provide high accuracy target ranging along with target identification.

US Patent:

44604246, Jul 17, 1984

Filed:

Apr 27, 1981

Appl. No.:

6/258167

Inventors:

Rudolph G. Buser - Wall NJ
Neal T. Nomiyama - Reston VA
Aubrey J. Dunn - Springfield VA

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

B32B 3104

US Classification:

156242

Abstract:

A substrate of a dimensionally-stable material is formed with precision m cavities therein for various linear or nonlinear optical elements or electro-optical elements such as lenses, beam splitters, reflectors, detectors, polarizers, Kerr cells, Pockel cells, etc. Various openings are also made in the substrate for function as optical paths or waveguides. The elements are then bonded into their respective cavities by glueing or soldering; the optical system thus formed is sealed in an air-tight housing.