Absolute calibration of the sensitivity of photodetectors using a biphotonic field

Alexander V. Sergienko, Alexander N. Penin

吕亮 Lü Liang, 张寅超 Zhang Yinchao, 林延东 Lin Yandong

V. B. Fedorov, V. G. Mityakov

L. J. Sun, Zhiyu Yang

A new method of absolute calibration of photodetector sensitivity based on spontaneous parametric down\|conversion(SPDC) biphoton field is described.The process of SPDC is studied theoretically.The single photon detection probability and two\|photon coincidence probability are derived and the calibration principle for photodetectors is explained.An experimental system has been set up.The sensitivity of a photon\|counting photomultiplier tube was measured,and the results were compared with those obtained using conventional method.

Sun Li

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.

Annabella Selloni, P. Schwendimann, A. Quattropani +1 more