Accession Number:

AD0608064

Title:

DESIGN AND FABRICATION OF OPTICAL FILTERS FOR LASER FREQUENCY.

Descriptive Note:

Rept. for Feb 63-Jul 64,

Corporate Author:

SPECTROLAB SYLMAR CALIF

Personal Author(s):

Report Date:

1964-10-01

Pagination or Media Count:

72.0

Abstract:

Theoretical aspects, production methods, and evaluation techniques of narrow band optical filters, which employ a thin sheet of mica in place of the usual evaporated dielectric spacer layer, are described. Such filters have been made and are reported with half-widths of less than 2 A and with transmission on the order of 60. In particular, details are given of the method of cleaving the mica sheets and the measurement of absorption. A filter holder is described which makes it possible to construct filters of practical size. Theoretical and experimental values are given for the angular sensitivity. Other properties discussed are the tunability, background, the spectral region for which they can be constructed, and the stability of the filters with time and with temperature changes. Recommendations for future work with such narrow band optical filters are presented and continuation of the program is recommended. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE