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Photonics
Volume 8
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10.3390/photonics8010012
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Article

Analysis of the Spatial Properties of Correlated Photon in Collinear Phase-Matching

by
Lin Yin
1,2,
Jianjun Li
1,
Wenchao Zhai
1,
Maopeng Xia
1,
Youbo Hu
1 and
Xiaobing Zheng
1,*
1
Key Laboratory of Optical Calibration and Characterization, Anhui Institute of Optics and Fine Mechanics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
2
Science Island Branch, Graduate School of USTC, Hefei 230026, China
*
Author to whom correspondence should be addressed.
Photonics 2021, 8(1), 12; https://doi.org/10.3390/photonics8010012
Submission received: 9 December 2020 / Revised: 4 January 2021 / Accepted: 4 January 2021 / Published: 7 January 2021
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Abstract

In this paper, the spatial properties of correlated photon in collinear phase-matching in the process of spontaneous parametric down conversion (SPDC) are researched. Based on the study of the phase-matching angle, non-collinear angle, and correlated photon wavelength, a theoretical model of non-collinear angular variation is derived, which can be used to estimate and predict the width of the correlated photon ring. The experimental measurement is carried out with CMOS camera, and the measurement results are consistent with the theoretical simulation results, which verifies the rationality of theoretical reasoning. Meanwhile, the change of the correlated photon divergence angle outside the crystal is studied, the closer the wavelength is to the degenerate, the smaller the measurement value of the divergence angle, which is agreement with the theoretical simulation. The results of the study play a reference role in the evaluation of the spatial properties of correlated photon and lay a foundation for the measurement of the correlated photon number rate and the calibration of a photodetector.
Keywords: spontaneous parametric down conversion; collinear phase-matching; non-collinear angular variation; divergence angle spontaneous parametric down conversion; collinear phase-matching; non-collinear angular variation; divergence angle
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MDPI and ACS Style

Yin, L.; Li, J.; Zhai, W.; Xia, M.; Hu, Y.; Zheng, X. Analysis of the Spatial Properties of Correlated Photon in Collinear Phase-Matching. Photonics 2021, 8, 12. https://doi.org/10.3390/photonics8010012

AMA Style

Yin L, Li J, Zhai W, Xia M, Hu Y, Zheng X. Analysis of the Spatial Properties of Correlated Photon in Collinear Phase-Matching. Photonics. 2021; 8(1):12. https://doi.org/10.3390/photonics8010012

Chicago/Turabian Style

Yin, Lin, Jianjun Li, Wenchao Zhai, Maopeng Xia, Youbo Hu, and Xiaobing Zheng. 2021. "Analysis of the Spatial Properties of Correlated Photon in Collinear Phase-Matching" Photonics 8, no. 1: 12. https://doi.org/10.3390/photonics8010012

APA Style

Yin, L., Li, J., Zhai, W., Xia, M., Hu, Y., & Zheng, X. (2021). Analysis of the Spatial Properties of Correlated Photon in Collinear Phase-Matching. Photonics, 8(1), 12. https://doi.org/10.3390/photonics8010012

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