Accession Number : ADD001563

Title :   Monochromatic Detector.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Geller,Myer

Report Date : 25 Feb 1975

Pagination or Media Count : 10

Abstract : In the patent a layer of non-thermal, photo-responsive material is positioned to receive radiant energy to be detected, the photo-responsive material preferably having a very sharply defined cut-off sensitivity relative to wavelength. A second layer comprising insulating semiconductor material, chosen to have a very sharply defined turn-on transmissivity characteristic relative to wavelength, is positioned to intercept the radiant energy to be detected before its reception by the photoresponsive material. By selection of materials and predetermination of thickness of the layers, a sharply defined and narrow bandpass of detector response can be realized comprising substantially monochromatic wavelengths between the cut-off sensitivity characteristic of the photo-responsive material and the turn-on transmissivity characteristic of the semiconductor material.

Descriptors :   *Optical detectors, *Monochromatic light, *Band pass filters, *Patents, Electrooptics, Coherent radiation, Photodetectors, Semiconductors

Subject Categories : Optical Detection and Detectors
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE