Open AccessThe effect of counting rate and time resolution on the measured photon statistical properties—— Experimental study of direct measurement via SPCM
Author(s) -
Yuan Li,
Gang Li,
Yuchi Zhang,
Xiaoyong Wang,
Junmin Wang,
Tiancai Zhang
Publication year - 2006
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.55.5779
Subject(s) - photon counting , resolution (logic) , photon , materials science , optics , physics , computer science , artificial intelligence
Photon statistical properties of coherent field and thermal field are experimentally studied by means of direct photon counting using only one single-photon-counting module (SPCM) operating in Geiger mode. The second-order degree of coherence as affected by photon counting rate and selected resolution time is investigated systematically. By taking into account all the experimental factors which can influence the g(2), the second-order degree of coherence of an unknown optical field can be determined quickly and simply via single SPCM when choosing proper detecting conditions. In our experiment, when the counting rate is about 109 kc/s and the resolution time varies from 28 ns to 212 ns, the measured results can reliably reflect the different second-order degree of coherence of coherent and thermal fields.