Accession Number : ADA303047

Title :   Extremely Narrowband and Cascaded Holographic Adjustable Range Tunable (ENCHART) Filter.

Descriptive Note : Final rept. 8 Nov 94-8 Aug 95,

Corporate Author : PHYSICAL OPTICS CORP TORRANCE CA

Personal Author(s) : Rizkin, Alexander

PDF Url : ADA303047

Report Date : DEC 1995

Pagination or Media Count : 29

Abstract : In Phase I, Physical Optics Corporation's R&D Division (POC) designed and developed a new Extremely Narrowband Cascaded Holographic Adjustable Range Tunable (ENCHART) filter using two holographic Fabry Perot filters (HFPFs): a coarse filter to select the desired portion of the optical range, and an extremely narrow (0.1 A) bandwidth fine filter operating within this selected range at any arbitrary wavelength. The fine filter is an electrically tuned liquid crystal cell. All established objectives were exceeded and a proof of concept ENCHART prototype was fabricated. This technology was extended to and demonstrated in the violet blue region of the spectrum.

Descriptors :   *OPTICAL FILTERS, OPTICAL PROPERTIES, HOLOGRAPHY, TUNING, BANDWIDTH, BLUE(COLOR), NARROWBAND, CASCADE STRUCTURES.

Subject Categories : Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE