Accession Number : ADD005524

Title :   Laser Annealing Technique for Improving IR Photoconductive Detectors.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Bartoli,Filbert J ; Esterowitz,Leon ; Kruer,Melvin R ; Allen,Roger E

Report Date : 01 Nov 1978

Pagination or Media Count : 19

Abstract : A method for improving the performance of off-the-shelf photoconductive detectors by irradiating selected areas of the detectors with a laser pulse of carefully controlled power density and pulse duration. The optimum parameters of the laser radiation will vary according to detector design and are determined experimentally for each type of detector. The laser power density and/or pulse duration is gradually increased from initial values which are well below the damage-threshold values which cause permanent damage to the detector, taking care not to exceed the damage-threshold values, and the detector performance is monitored to determine the parameters of the laser pulse which provides the maximum improvement in detector performance. Once the optimum parameters are determined for a particular type of detector, these values may then be used for assembly-line processing of many detectors of the same type. (Author)

Descriptors :   *Patent applications, *Infrared photoconductors, Pulsed lasers, Annealing

Subject Categories : Lasers and Masers
      Infrared Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE