Abstract

By cooling the chopping blade, the recovery time of a thermal detector can be reduced to a negligible fraction of the chopping cycle. The possible gains in chopping frequency and responsivity are analyzed and calculated for the case of square-wave chopping. Disadvantages, such as distortion of the detector output waveform, are also analyzed.

© 1961 Optical Society of America

Image Converter for Thermal Radiation*

M. Garbuny, T. P. Vogl, and J. R. Hansen
J. Opt. Soc. Am. 51(3) 261-273 (1961)

Dielectric Bolometer: A New Type of Thermal Radiation Detector*

Rudolf A. Hanel
J. Opt. Soc. Am. 51(2) 220-224 (1961)

Absolute Calibration of a Light Detector

R. L. Christensen and I. Ames
J. Opt. Soc. Am. 51(2) 224-236 (1961)

Long-Wavelength Photoeffect in Mercury Selenide*

M. D. Blue, J. H. Garfunkel, and P. W. Kruse
J. Opt. Soc. Am. 51(12) 1408-1410 (1961)

Theoretical Considerations on the Quantum Efficiency of Photographic Detectors*

Hans J. Zweig
J. Opt. Soc. Am. 51(3) 310-319 (1961)