PHOTOELECTRIC MILLIMETER WAVE DETECTOR.
Abstract
The most emphasis is centered on maximizing the overall performance of n-type indium antimonide which operates by a combination of mechanisms - conventional photoconductivity, magnetically induced energy gap and free carrier absorption. The sample detector operates at liquid helium temperature or below and has the following properties: (a) Peak detectivity at approximately 2 mm wavelength although detectivity range is from 100 microns to over 8 mm. (b) Time constant of 250 nanoseconds. (c) Double dewar package configuration with an integral super-conducting solenoid. Other materials such as impurity activated germanium, gallium arsenide, and indium arsenide were investigated for sensitivity to millimeter and sub-millimeter radiation. Some samples of gallium arsenide were found to be highly sensitive to millimeter radiation of 2 and 4 mm wavelength. A sample of antimony doped germanium grown program was tested unstrained and found to be sensitive in the sub-millimeter wave region (.105 mm). (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1964
- Accession Number
- AD0608710
Entities
People
- G. F. Giggey
- P. P. Debye
- P. R. Bratt
Organizations
- RTX