Studies of Pyroelectricity in Thin Samples of Ferroelectric Materials for Improved High Speed Infrared Detectors.
Final rept. 1 Jun 77-30 Jun 80,
UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES CENTER FOR LASER STUDIES
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Pyroelectric PE detectors made of 10 and 25 micrometers thick samples of PLZT 86535 respond well to megawatt, 50 nsec CO2 laser pulses. Superimposed piezoelectric oscillations have an incubation time, during which they do not disturb the PE response. Edge electroded detectors showed an RC time of 60 picosecond. Poling currents in the samples appear to have components due to space-charge injection and to polaron formation and motion. A method was developed to separate the PE component of the poling current and to measure the PE coefficient under the poling voltage. Author
- Infrared Detection and Detectors