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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 4, Iss. 6 — Jun. 10, 2006
  • pp: 315–317

Research in absolute calibration of single photon detectors by means of correlated photons

Yu Feng, Xiaobing Zheng, Jianjun Li, and Wei Zhang  »View Author Affiliations


Chinese Optics Letters, Vol. 4, Issue 6, pp. 315-317 (2006)


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Abstract

There are two general methods in radiometric calibration of detectors, one is based on radiation sources and the other based on detectors. Because the two methods need to establish a primary standard of high precision and a transfer chain, precision of the standard will be reduced by extension of the chain. A new calibration method of detectors can be realized by using correlated photons generated in spontaneous parametric down-conversion (SPDC) effect of nonlinear crystal, without needing transfer chain. Using 351.1-nm output of a tunable laser to pump 'beta'-barium borate (BBO) crystal, an absolute calibration experimental system of single photon detectors based on correlated photons is performed. The quantum efficiency of photomultiplier (PMT) at 702.2 nm is measured by the setup. Advantages of this method over traditional methods are also pointed out by comparison.

© 2006 Chinese Optics Letters

OCIS Codes
(030.5260) Coherence and statistical optics : Photon counting
(030.5630) Coherence and statistical optics : Radiometry
(040.5160) Detectors : Photodetectors
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes

Citation
Yu Feng, Xiaobing Zheng, Jianjun Li, and Wei Zhang, "Research in absolute calibration of single photon detectors by means of correlated photons," Chin. Opt. Lett. 4, 315-317 (2006)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-4-6-315


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