Accession Number : ADA320311

Title :   Fabrication of a Monolithic Single-Crystal Silicon Inner Cone Substrate for the Roma Program,

Corporate Author : TRW INC REDONDO BEACH CA

Personal Author(s) : Groark, Frank

PDF Url : ADA320311

Report Date : SEP 1996

Pagination or Media Count : 15

Abstract : Previous high energy laser mirrors were made of metals such as molybdenum, copper and tungsten carbide. These mirrors required active heat exchanger coolant systems to maintain the desired surface figure and were complicated and costly to manufacture. The successful use of uncooled, single crystal silicon mirrors for beam transfer optics in high energy lasers has demonstrated the feasibility of uncooled resonator mirrors. The Resonator Optics Material Assessment (ROMA) program surveyed the presently available technology for the fabrication of an uncooled inner cone optical element and then demonstrated the maturity of the technology by fabricating a single crystal silicon inner cone optical element for use in the Alpha space based high energy laser. The single crystal silicon inner cone is considerably simpler and can be manufactured using conventional machining techniques.

Descriptors :   *SINGLE CRYSTALS, *SILICON, *HIGH ENERGY LASERS, MIRRORS, METALS, OPTICS, MACHINING, FABRICATION, OPTICAL MATERIALS, HEAT EXCHANGERS, MOLYBDENUM, COOLING, SURFACES, COPPER, RESONATORS, MONOLITHIC STRUCTURES(ELECTRONICS), TUNGSTEN CARBIDES, LASER MIRRORS.

Subject Categories : Lasers and Masers
      Inorganic Chemistry
      Crystallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE