Journal of Applied Optics

ABSOLUTE CALIBRATION OF PHOTODETECTORS BASED ON SPONTANEOUS PARAMETRIC DOWN CONVERSION BIPHOTON FIELD

Sun Li

Published Jan 1, 1999• 0 citations

Abstract

A new method of absolute calibration of photodetector′s sensitivity based on spontaneous parametric down conversion (SPDC) biphoton field is discussed.The process of SPDC is studied theoretically.An experimental system has been set up. The sensitivity of a photon counting photomultiplier tube was measured, and the results were compared with that obtained using conventional method.

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