Investigate Material Systems for Mirrors Used in High Power CO and CO2 Lasers
Abstract
An IR metal mirror with up to approximately 99.2% reflectivity and a surface roughness of about 15 A rms was developed using high-rate sputter- deposition techniques. The necessary smooth, high-conductivity surface was obtained by applying two sequentially deposited metal layers on a high- conductivity metal mirror support (OFHC). The principal property of the first deposit was its polishability and of the second its high electrical conductivity. The required smooth surface was obtained by depositing and mechanically polishing a dispersion-hardened (1 vol.%SiC in Cu), stable, fine- grained material about 0.5 mm thick.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1973
- Accession Number
- AD0769103
Entities
People
- R. W. Stewart