Laser & Optoelectronics Progress, Volume. 52, Issue 5, 51902(2015)
Research on Broadband Spectrum Distribution Based on Spontaneous Parametric Down Conversion
Research on spectrum distribution of correlated photon optics-field has great significance in terms of the calibration for photoelectric detector in broadband spectrum based on spontaneous parametric down-conversion. An experiment is set up to measure the distribution of correlated photon broadband spectrum. A continuous wave 355 nm laser and a photon counting system are used to pump the β -barium borate (BBO) crystal to product type I spontaneous parametric down-conversion in the regime of nonlinear and the spectrum distribution of correlated photon outside the BBO crystal is measured, respectively. The bandwidth of correlated photon spectrum in experiment is 259 nm (550~808 nm). The angle distribution result in experiment is in accordance with the theory prediction, with the angle distribution difference less than 2%. It is turned out that a broad band spectrum distribution from visible to near infrared exists with respect to correlated photon. It is promising to be applied to calibration for photoelectric detector in broadband spectrum.
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Gao Dongyang, Xia Maopeng, Hu Youbo, Liu Yan, Sheng Wenyang, Li Jianjun, Zheng Xiaobing. Research on Broadband Spectrum Distribution Based on Spontaneous Parametric Down Conversion[J]. Laser & Optoelectronics Progress, 2015, 52(5): 51902
Category: Nonlinear Optics
Received: Nov. 12, 2014
Accepted: --
Published Online: Apr. 2, 2015
The Author Email: Dongyang Gao (dyanggao@163.com)