George Jeffrey Kattawar

US Patent:

6795777, Sep 21, 2004

Filed:

Mar 4, 2003

Appl. No.:

10/379519

Inventors:

Marlan O. Scully - Bryan TX
George W. Kattawar - College Station TX
Robert P. Lucht - West Lafayette IN
Tomas Opatrny - College Station TX
Herschel S. Pilloff - Longmont CO
Alexei V. Sokolov - College Station TX
M. Suhail Zubairy - College Station TX

Assignee:

The Texas AM University System - College Station TX

International Classification:

G01N 3100

US Classification:

702 28, 702 27, 250251, 2504931, 356301, 356302

Abstract:

According to one embodiment of the present invention, identifying a molecule of a sample includes illuminating the sample with a preparation light beam, where the preparation light beam can initiate a substantially maximized coherence of a target molecule to yield a molecular signature corresponding to the target molecule. The sample is illuminated with a probe light beam, where the probe light beam can scatter radiation from the sample. Radiation scattered from the sample is detected, and whether the radiation exhibits the molecular signature is determined. The target molecule is identified in accordance with the determination of whether the radiation exhibits the molecular signature.

US Patent:

RE41682, Sep 14, 2010

Filed:

Jun 6, 2008

Appl. No.:

12/134855

Inventors:

Edward S. Fry - College Station TX, US
George S. Kattawar - College Station TX, US
Deric J. Gray - Nacogdoches TX, US
Xianzhen Zhao - College Station TX, US
Zheng Lu - College Station TX, US

Assignee:

The Texas A&M University System - College Station TX

International Classification:

G01N 21/00

US Classification:

356432, 356440

Abstract:

An apparatus for measuring an absorption coefficient includes a first diffusive material, a second diffusive material inside the first diffusive material separated from the first diffusive material by a cavity, and a transparent material proximate to an inner surface of the second diffusive material that holds an absorptive material. First and second light detectors measure light intensities in the first and second diffusive materials cavity and the transparent material respectively. An absorption coefficient for the absorptive material may be determined based on the first and second light intensities measured when the cavity is illuminated by a light source.

US Patent:

7868287, Jan 11, 2011

Filed:

Aug 28, 2007

Appl. No.:

11/895955

Inventors:

Edward S. Fry - College Station TX, US
Joseph A. Musser - College Station TX, US
Jeffrey Katz - College Station TX, US
William C. Merka - College Station TX, US
George W. Kattawar - College Station TX, US
Zheng Lu - College Station TX, US

International Classification:

G01J 1/00

US Classification:

250228, 25022723

Abstract:

The invention relates an apparatus and method for forming a diffuse reflector. In one embodiment of the invention, a diffuse reflector is formed by exposing transmissive particles of a pre-determined purity to pressure and forming a material having desired diffuse reflective properties. The transmissive particles may further be thermally treated, such as by sintering, to form material having desired diffuse reflective properties. The treated transmissive particles may then be disposed in a vessel and define a cavity therein to form an integrated cavity diffuse reflector.

US Patent:

20040141179, Jul 22, 2004

Filed:

Nov 17, 2003

Appl. No.:

10/715336

Inventors:

Edward Fry - College Station TX, US
George Kattawar - College Station TX, US
Deric Gray - Nacogdoches TX, US
Xianzhen Zhao - College Station TX, US
Zheng Lu - College Station TX, US

International Classification:

G01N021/59

US Classification:

356/432000

Abstract:

An apparatus for measuring an absorption coefficient includes a first diffusive material, a second diffusive material inside the first diffusive material separated from the first diffusive material by a cavity, and a transparent material proximate to an inner surface of the second diffusive material that holds an absorptive material. First and second light detectors measure light intensities in the first and second diffusive materials respectively. An absorption coefficient for the absorptive material may be determined based on the first and second light intensities measured when the cavity is illuminated by a light source.

US Patent:

6388246, May 14, 2002

Filed:

Jan 26, 2000

Appl. No.:

09/491943

Inventors:

Edward S. Fry - College Station TX
George W. Kattawar - College Station TX
Thomas Walther - Bryan TX

Assignee:

The Texas AM University System - College Station TX

International Classification:

H01J 4014

US Classification:

250221, 250574

Abstract:

A system for detecting an underwater object includes an optical signal generator operable to generate and transmit an optical signal into the water. The system also includes an absorption cell operable to receive the optical signal reflected from the water and absorb an unshifted frequency component of the reflected optical signal. The system further includes a detector operable to receive a shifted frequency component of the optical signal from the absorption cell and detect the object using the shifted frequency component of the optical signal. Displacement of the water by the object causes an absence of a portion of the shifted frequency component of the optical signal.