Accession Number : ADB029987

Title :   Optimization of Long Life Laser Device.

Descriptive Note : Final rept. 11 Jun 76-11 Aug 77,

Corporate Author : PERKIN-ELMER CORP NORWALK CT

Personal Author(s) : Rosenkrantz, L. Jay ; Huchital, David A.

Report Date : OCT 1977

Pagination or Media Count : 120

Abstract : A CW, long life Nd:YAG laser device utilizing an RF-excited electrodeless krypton arc lamp and appropriate for use in space has been designed, fabricated, optimized and tested. Multimode output power in excess of 1.5 watts and TEM mode output in excess of 0.6 (0.5 watts plane polarized) have been achieved for only 250 watts of RF input power. The 4MM diameter by 25mm long Nd:YAG laser rod was conductively cooled in all three models of the device tested in this program. However, in one model all components, including the RF excited electrodeless krypton arc lamp and the diffuse reflector/coil assembly were completely conductively cooled, thereby satisfying an essential requirement for spacecraft operation. Essentially degradation-free lamp operation was also demonstrated during a 10,000 hour life test at an RF input power level of 150 watts. The life test lamp was air cooled. (Author)

Descriptors :   *CONTINUOUS WAVE LASERS, *NEODYMIUM LASERS, *YTTRIUM ALUMINUM GARNET, LONG LIFE, OPTIMIZATION, RADIOFREQUENCY, EXCITATION, KRYPTON LAMPS, ARC LAMPS, FABRICATION, TEST AND EVALUATION.

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE