Accession Number:

ADD013341

Title:

Multi-Color Tunable Filter.

Descriptive Note:

Patent, Filed 14 Apr 80, patented 21 Sep 82,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

Report Date:

1982-09-21

Pagination or Media Count:

4.0

Abstract:

A semi-conductor multi-color tunable filter is created by multi epitaxial layers composition. An AC modulation voltage is superimposed on a sweep bias to periodically shift the fundamental absorption edge of each individual epitaxial layer. This arrangement permits a unique voltage to be associated with a particular color. A lock-in filter matches colors observed at a detector with the voltage present for a given observation.

Subject Categories:

  • Optics
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE