OPTICAL BEHAVIOR OF FILMS FOR RADIATION IN THE EXTREME ULTRAVIOLET
Abstract
The optical properties of many substances in the region of rdiation wavelengths less than 2000 A are unknown because experimental difficulties are encountered due to the opacity of most solids and fases in the extreme ultraviolet. The theory of optical constants of absorbing substances from measurements of reflectivity is discussed. The generalized Fresnel equations were used to construct graphs of reflectivity as a function of refractive index and extinction coefficient for four angles of incidence and five values of polarization of the incident light. The specular reflectivity of aluminum, silver, gold, magnesium fluoride, silicon monoxide, and zinc sulfide films was measured for wavelengths of 1216 A, 1048 A, 920 A, 584 A, and 304 A using an ultraviolet monochromator and a vacuum reflectometer. Samples were vacuum evaporated into glass and measured in situ. The transmision of an aluminum film at 584 A and 304 A was also measured. The optical constants of these substances were obtained.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1961
- Accession Number
- AD0268227
Entities
People
- F. Oppenheimer
- Thomas T. Cole
- W. A. Rense
Organizations
- University of Colorado Boulder