STUDIES, RESEARCH AND INVESTIGATIONS OF THE OPTICAL PROPERTIES OF THIN FILMS OF METALS, SEMI-CONDUCTORS AND DIELECTRICS.
Abstract
MODIFICATION OF THE SHUTTER SYSTEM: The driving motor for the shutter system used in the vacuum system was replaced by a helical spring and the shutter was replaced by a slotted 12-in.-diameter disk. This was done to permit (1) complete preparation of films without breaking the vacuum and (2) deposition times of the order of tenths of seconds or greater. MODIFICATION OF THE BECKMAN DK-2 SPECTROPHOTOMETER: A device was installed in the integrating sphere so that absolute measurements of the reflectance of films could be made. The modification reduces labor in correcting the reflectance curves and minimizes handling of the mirrors. OPTICAL MEASUREMENTS: Attempts were made with various materials to obtain n and k from Hadley's curves ('Transmittance and Reflectance vs. thickness/wavelength for thin film's) and to determine why satisfactory results were not obtained. Values of n and k were obtained at several wavelengths for aluminum, bismuth, and copper but not for silver.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 15, 1965
- Accession Number
- AD0634035
Entities
People
- Lawrence N. Hadley
Organizations
- Colorado State University