Accession Number : AD0907551

Title :   Space Laser Design.

Descriptive Note : Final rept. Mar-Sep 72,

Corporate Author : GTE GOVERNMENT SYSTEMS CORP MOUNTAIN VIEW CA SYLVANIA SYSTEMS GROUP-WESTERN D IV

Personal Author(s) : Huff, Lloyd ; Taynai, Joseph D. ; Massey, Gail A.

Report Date : NOV 1972

Pagination or Media Count : 20

Abstract : This report describes the experimental work and results of a six month program whose objective was the laboratory demonstration of a conductively cooled Nd:YAG laser with a CW, TEM sub 00 mode output of 1 watt for less than 300 watts input. The laser was pumped with a K-Rb lamp and employed conductive cooling. To reject the unwanted infrared lamp radiation, the elliptical pump cavity employed a dielectric mirror which selectively reflected the pump radiation and transmitted longer wavelengths. Efficient TEM sub 00 mode conversion was obtained with a tilted intracavity lens, which was anti-reflection coated at 1.06 micrometers. Since the lamp's Nb end seals had to be protected, the pump cavity and lamp supports were located in an enclosure filled with ultra-high purity argon. For 300 watts input to the lamp, the laser produced 1.85 watts multimode, and 0.73 watts in the TEM sub 00 model. (Author)

Descriptors :   (*LASERS, SPACE COMMUNICATIONS), INFRARED RADIATION, OPTICAL COMMUNICATIONS, NEODYMIUM, RODS, YTTRIUM, ALUMINUM, GARNET, OPTICAL PUMPING, INFRARED LAMPS, POTASSIUM, RUBIDIUM, CONDUCTION(HEAT TRANSFER), COOLING, DIELECTRICS, MIRRORS, RESONATORS, SPACE ENVIRONMENTS, INFRARED FILTERS.

Subject Categories : Lasers and Masers
      Optics
      Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE