Accession Number : AD0693311

Title :   MATERIALS FOR HIGH-POWER CO2 LASERS.

Descriptive Note : Final technical rept. 8 Aug 68-8 May 69,

Corporate Author : RAYTHEON CO WALTHAM MASS RESEARCH DIV

Personal Author(s) : Rudko,Robert I. ; Horrigan,Frank A.

Report Date : SEP 1969

Pagination or Media Count : 110

Abstract : The report discusses window and mirror materials suitable for high-power 10.6 micron operation. An extensive survey of candidate materials is presented, including all pertinent physical parameters, as well as an assessment of the ultimate power-handling capabilities of each. Experimental measurement of the optical absorption coefficients was carried out wherever necessary. Major emphasis was placed upon the semiconducting window materials because of their superior mechanical properties. The thermal runaway mode of failure, characteristic of these materials, was analyzed in some detail for germanium, indium antimonide and gallium arsenide. The primary conclusions are that gallium arsenide remains the best candidate material for high-power windows and that indium antimonide is an interesting and very promising candidate for 'high-power' 10.6 micron optical isolator applications. (Author)

Descriptors :   (*GAS LASERS, *INFRARED OPTICAL MATERIALS), (*MIRRORS, GAS LASERS), NITROGEN OXIDES, SEMICONDUCTORS, GALLIUM ARSENIDES, GERMANIUM, ANTIMONY ALLOYS, INDIUM COMPOUNDS, DEGRADATION, PHYSICAL PROPERTIES, COMPOSITE MATERIALS

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE