中国物理B ›› 2017, Vol. 26 ›› Issue (10): 104207-104207.doi: 10.1088/1674-1056/26/10/104207

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

The intensity detection of single-photon detectors based on photon counting probability density statistics

Zijing Zhang(张子静), Long Wu(吴龙), Jie Song(宋杰), Yuan Zhao(赵远)   

  1. 1. Department of Physics, Harbin Institute of Technology, Harbin 150001, China;
    2. School of Informatics, Zhejiang Sci-Tech University, Hangzhou 310018, China
  • 收稿日期:2017-02-11 修回日期:2017-05-17 出版日期:2017-10-05 发布日期:2017-10-05
  • 通讯作者: Zijing Zhang, Zijing Zhang E-mail:zhangzijing@hit.edu.cn;jiesong2002@gmail.com
  • 基金资助:
    Projiect supported by the Fundamental Research Funds for the Central Universities, China (Grant No. AUGA5710056414), the Program for Innovation Research of Science in Harbin Institute of Technology (Grant Nos. PIRS OF HIT A201412 and PIRS OF HIT Q201505), the National Natural Science Foundation of China (Grant No. 11675046), the Doctoral Fund of the Ministry of Education of China (Grant No. 20122302120003), the Natural Science Foundation of Heilongjiang Province of China (Grant No. A201303), and the Postdoctoral Scientific Research Developmental Fund of Heilongjiang Province, China (Grant No. LBH-Q15060).

The intensity detection of single-photon detectors based on photon counting probability density statistics

Zijing Zhang(张子静)1, Long Wu(吴龙)2, Jie Song(宋杰)1, Yuan Zhao(赵远)1   

  1. 1. Department of Physics, Harbin Institute of Technology, Harbin 150001, China;
    2. School of Informatics, Zhejiang Sci-Tech University, Hangzhou 310018, China
  • Received:2017-02-11 Revised:2017-05-17 Online:2017-10-05 Published:2017-10-05
  • Contact: Zijing Zhang, Zijing Zhang E-mail:zhangzijing@hit.edu.cn;jiesong2002@gmail.com
  • Supported by:
    Projiect supported by the Fundamental Research Funds for the Central Universities, China (Grant No. AUGA5710056414), the Program for Innovation Research of Science in Harbin Institute of Technology (Grant Nos. PIRS OF HIT A201412 and PIRS OF HIT Q201505), the National Natural Science Foundation of China (Grant No. 11675046), the Doctoral Fund of the Ministry of Education of China (Grant No. 20122302120003), the Natural Science Foundation of Heilongjiang Province of China (Grant No. A201303), and the Postdoctoral Scientific Research Developmental Fund of Heilongjiang Province, China (Grant No. LBH-Q15060).

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摘要： Single-photon detectors possess the ultra-high sensitivity, but they cannot directly respond to signal intensity. Conventional methods adopt sampling gates with fixed width and count the triggered number of sampling gates, which is capable of obtaining photon counting probability to estimate the echo signal intensity. In this paper, we not only count the number of triggered sampling gates, but also record the triggered time position of photon counting pulses. The photon counting probability density distribution is obtained through the statistics of a series of the triggered time positions. Then Minimum Variance Unbiased Estimation (MVUE) method is used to estimate the echo signal intensity. Compared with conventional methods, this method can improve the estimation accuracy of echo signal intensity due to the acquisition of more detected information. Finally, a proof-of-principle laboratory system is established. The estimation accuracy of echo signal intensity is discussed and a high accuracy intensity image is acquired under low-light level environments.

关键词: single photon detector, photon counting, low light level

Abstract: Single-photon detectors possess the ultra-high sensitivity, but they cannot directly respond to signal intensity. Conventional methods adopt sampling gates with fixed width and count the triggered number of sampling gates, which is capable of obtaining photon counting probability to estimate the echo signal intensity. In this paper, we not only count the number of triggered sampling gates, but also record the triggered time position of photon counting pulses. The photon counting probability density distribution is obtained through the statistics of a series of the triggered time positions. Then Minimum Variance Unbiased Estimation (MVUE) method is used to estimate the echo signal intensity. Compared with conventional methods, this method can improve the estimation accuracy of echo signal intensity due to the acquisition of more detected information. Finally, a proof-of-principle laboratory system is established. The estimation accuracy of echo signal intensity is discussed and a high accuracy intensity image is acquired under low-light level environments.

Key words: single photon detector, photon counting, low light level

中图分类号:  (Remote sensing; LIDAR and adaptive systems)

  • 42.68.Wt
42.79.Qx (Range finders, remote sensing devices; laser Doppler velocimeters, SAR, And LIDAR)