PHOTOMIXING AT 10.6μ WITH STRONTIUM BARIUM NIOBATE PYROELECTRIC DETECTORS

15 October 1969

journal article
Published by AIP Publishing in Applied Physics Letters

Vol. 15 (8) , 251-253
https://doi.org/10.1063/1.1652988

Abstract

Theoretical limitations of optical heterodyne detection with pyroelectric detectors are discussed. It is shown that the minimum detectable power Pm of Sr1−xBaxNb2O6 pyroelectric detectors at 10.6μ, with an intermediate frequency of 1 MHz and a local oscillator power PL = 1 W is Pm = 8×10−16 W/Hz. An experimental heterodyne receiver with the above conditions is shown to have a value Pm = 1.5×10−11 W/Hz where amplifier noise is much larger than detector noise. The theoretical and experimental dependence of Pm on PL are compared in the amplifier noise limit.

Keywords

This publication has 6 references indexed in Scilit:

FERROELECTRIC Sr1−xBaxNb2O6 AS A FAST AND SENSITIVE DETECTOR OF INFRARED RADIATION
Applied Physics Letters, 1968
Infrared heterodyne detection
Proceedings of the IEEE, 1968
Noise Limitations in Solid State Photodetectors
Applied Optics, 1967
OPTIMUM HETERODYNE DETECTION AT 10.6 μm IN PHOTOCONDUCTIVE Ge:Cu
Applied Physics Letters, 1966
Intensity Fluctuations in the Output of cw Laser Oscillators. I
Physical Review B, 1966
Minimum Detectable Power of a Pyroelectric Thermal Receiver
Review of Scientific Instruments, 1962