Accession Number : ADD007327

Title :   Tunable Infrared Detector with Narrow Bandwidth.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Bottka,Nicholas

Report Date : 13 Mar 1979

Pagination or Media Count : 4

Abstract : An infrared detector with narrow band tunable response is disclosed. The detector is composed of four layers of epitaxially grown material that is doped for selective wavelength absorption. The uppermost layer has a thickness much larger than the penetration depth of short wavelength radiation or the diffusion length of photo generated carriers near the surface. The upper layer is a heavily N-doped layer over a P-doped layer. The cut-on wavelength edge is determined by the amount of doping in the uppermost layer. By applying a reverse bias to this N-P junction, the cut-off absorption edge can be shifted to longer wavelengths. (Author)

Descriptors :   *Patents, *Infrared detectors, Tuning devices, Infrared filters, Doping

Subject Categories : Infrared Detection and Detectors
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE