Accession Number : ADA118091

Title :   Development of Large Area PV HgCdTe Detectors for 10.6 Micrometers.

Descriptive Note : Final rept. 15 Jun 77-30 Jan 79,


Personal Author(s) : Bratt,P R ; Riley,K J

PDF Url : ADA118091

Report Date : 30 Jun 1980

Pagination or Media Count : 110

Abstract : The purpose of this program was to develop large area PV HgCdTe detectors for laser receiver systems operating at 10.6 micrometer. The work accomplished included: growth of HgCdTe single-crystal material by two different methods; design and fabrication of quadrant detector arrays with elemental areas of 1 x 1 mm square and 2 x 2 mm square per quadrant; test and evaluation of quadrant arrays; and packaging of quadrant arrays in evacuated glass/metal dewars with J-T cryostats for cooling and four-channel preamplifiers for laboratory or field operation. HgCdTe crystals were produced by both zone melting and solid-state recrystallization processes. Either technique yielded sufficient single-crystal material to fabricate the large area arrays in monolithic form. The uniformity of alloy composition was adequate to give nearly identical spectral response characteristics for each detector quadrant. (Author)

Descriptors :   *Infrared detectors, *Mercury compounds, *Receivers, *Cadmium tellurides, *Laser beams, Far infrared radiation, Single crystals, Metals, Carbon dioxide, Detectors, Multichannel, Recrystallization, Cooling, Packaging, Spectra, Materials, Quadrants, Zone melting, Lasers, Response, Dewar flasks, Lasers, Preamplifiers, Glass, Arrays

Subject Categories : Infrared Detection and Detectors
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE