Photon statistic measurement of down-converted light

Dániel Oszetzky; Aladár Czitrovsky

doi:10.1117/12.667328

29 December 2005 Photon statistic measurement of down-converted light

Dániel Oszetzky, Aladár Czitrovsky

Proceedings Volume 6028, ICO20: Lasers and Laser Technologies; 60281W (2005) https://doi.org/10.1117/12.667328
Event: ICO20:Optical Devices and Instruments, 2005, Changchun, China

Abstract

Taking advantage of our previous experimental results and calculations that establish a new approach to the calibration of photo detectors using correlated photon pairs, we developed an experimental setup with a fast electronic control unit for the direct measurement of photon statistics. The most convenient source for generating such correlated photon pairs is a nonlinear optical process of spontaneous parametric down conversion (SPDC). When a photon of the pump beam is incident to a nonlinear crystal with phase matching condition, a pair of photons (signal and idler) is created at the same time. The photons are detected in the signal beam, and a controllable shutter is placed in the idler beam. When a detection event is made in the signal beam the fast optical shutter opens for a certain (pre-programmed) time. While the opening time of the shutter is adjustable with good time resolution, the time interval between the photons in the idler beam can be scanned, so the photon statistics can be determined.

Citation Download Citation

Dániel Oszetzky and Aladár Czitrovsky "Photon statistic measurement of down-converted light", Proc. SPIE 6028, ICO20: Lasers and Laser Technologies, 60281W (29 December 2005); https://doi.org/10.1117/12.667328

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