James W Ogle

US Patent:

51665980, Nov 24, 1992

Filed:

Aug 7, 1990

Appl. No.:

7/563380

Inventors:

Cenobio H. Gallegos - Santa Fe NM
James W. Ogle - Santa Fe NM
John L. Stokes - Los Alamos NM

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

G02F 128
G01R 2316

US Classification:

324 77K

Abstract:

A method and apparatus for capturing and recording indications of frequency content of electromagnetic signals and radiation is disclosed including a laser light source (12) and a Bragg cell (14) for deflecting a light beam (22) at a plurality of deflection angles (36) dependent upon frequency content of the signal. A streak camera (26) and a microchannel plate intensifier (28) are used to project Bragg cell (14) output onto either a photographic film (32) or a charge coupled device (CCD) imager (366). Timing markers are provided by a comb generator (50) and a one shot generator (52), the outputs of which are also routed through the streak camera (26) onto the film (32) or the CCD imager (366). Using the inventive method, the full range of the output of the Bragg cell (14) can be recorded as a function of time.