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:

1976-02-09

Pagination or Media Count:

15.0

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