Accession Number : ADA294561

Title :   An Electronically Tunable, First-Order Fabry-Perot Infrared Filter.

Descriptive Note : Technical rept.,

Corporate Author : AEROSPACE CORP EL SEGUNDO CA TECHNOLOGY OPERATIONS

Personal Author(s) : Knudtson, J. T. ; Levy, D. S. ; Herr, K. C.

PDF Url : ADA294561

Report Date : 10 APR 1995

Pagination or Media Count : 24

Abstract : A tunable infrared filter capable of scanning from 8.2 to 12.8 micrometers has been designed, constructed and tested. It is a first order Fabry Perot interferometer with piezoelectrically driven cavity spacing. Multilayer dielectric coatings for the partially transmitting mirrors were designed to minimize the wavelength dependent phase change produced by reflection. The transmission bandwidth ranged from 2.8 to 4.0% across the tuning range. Continuous scanning at 20 Hz rates was demonstrated.

Descriptors :   *FABRY PEROT INTERFEROMETERS, *INFRARED OPTICAL MATERIALS, *INFRARED FILTERS, MIRRORS, PHASE TRANSFORMATIONS, DIELECTRIC FILMS, TRANSMITTANCE, TUNING, BANDWIDTH, OPTICAL COATINGS, INFRARED SCANNING.

Subject Categories : Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE