Accession Number : ADD004551

Title :   High Energy Laser Pointing and Tracking System Utilizing Beam Angle/Focus Dither Method of Operation.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Hayes,Cecil L

Report Date : 20 Dec 1977

Pagination or Media Count : 5

Abstract : Optimum energy delivery in a high energy laser system is realized by intensity modulating the transmitted laser beam and demodulating the received reflected laser energy to obtain phase error signals. The error signals are used by a servo system to direct the transmitted beam. Beam intensity modulation is accomplished by angle/focus dither. In systems having relatively small slewing or scanning mirrors the dither is accomplished by manipulating the mirror itself. For systems having large slewing mirrors a small aperture mirror is positioned adjacent to the slewing mirror and used to impart the required dither to a small portion of the transmitted laser beam. (Author)

Descriptors :   *Patents, *Lasers, Optimization, Mirrors, Laser tracking, Laser beams

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE