Accession Number : ADD002725

Title :   Laser System Having Frequency Doubling.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Ferguson,Gerald D

Report Date : 09 Feb 1976

Pagination or Media Count : 15

Abstract : The patent application concerns a laser system for ocean radar applications having a resonant chamber for producing a pair of homogenized, singularly polarized output beams having identical pulse widths and energies. A quarter wave plate is inserted within the optical path of the resonant chamber and rotates the birefringence effects of a laser crystal positioned within the chamber to generate a pair of homogenized, orthogonally polarized beams. A selected one of the orthogonally polarized beams is transmitted through a half wave plate and joins with the remaining beam for passage through a telescope assembly to minimize the cross-sectional area of the beams. A doubler crystal receives the telescoped beams and doubles the frequency thereof to form the pair of homogenized output beams having light energy in the green spectrum.

Descriptors :   *Laser beams, *Frequency multipliers, *Optical radar, *Oceanographic equipment, Optical detection, Underwater object locators, Underwater targets, Infrared detection, Laser modulators, Crystals, Q switching, Telescopes

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE