Accession Number : AD0841426

Title :   LASER RADAR DEVELOPMENT.

Descriptive Note : Progress rept. Mar-Aug 68.

Corporate Author : LEAR SIEGLER INC SANTA MONICA CA ASTRONICS DIV

Report Date : 01 SEP 1968

Pagination or Media Count : 30

Abstract : Several Q-switching experiments were conducted with the cored Nd:YAG. The 0.5- by 4-inch cored YAG rod was operated Q-switched at repetition rates up to 25 pps, with energy outputs of 200 to 300 millijoules per pulse. The head is capable of higher repetition rates, but the present energy storage system is not. The Q-switched operation is still limited by the short operating life of the Kodak saturable-filter dyes, even though we were able to extend the lifetime by a factor of 10 with better UV shielding. A brief examination of the major factors that determine the degradation by atmospheric turbulence of the performance of a laser radar is presented. Also the design and construction of a second-generation RGI system capable of illuminating and imaging a diffusely reflecting object in a water background at one mile with atmosphere-limited resolution is considered.

Descriptors :   *LASERS), *ATMOSPHERIC REFRACTION), (*OPTICAL RADAR, (*LIGHT TRANSMISSION, (*OPTICAL EQUIPMENT, OPTICAL RADAR), RUBY, RODS, YTTRIUM COMPOUNDS, ALUMINUM ALLOYS, GARNET, DOPING, NEODYMIUM, ATMOSPHERES, TURBULENCE, LIGHT, REFRACTIVE INDEX, IMAGE TUBES, FOCUSING, DEGRADATION.

Subject Categories : Lasers and Masers
      Optical Detection and Detectors
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE