Mathematical modeling and evaluation of signal-to-noise ratio for single-photon laser active detection

Yunhang HU; Lingjie WANG; Yang LIU; Lianqiang WANG; Di ZHOU

doi:10.5768/JAO202546.0107001

Journal of Applied Optics, Volume. 46, Issue 1, 194(2025)

Mathematical modeling and evaluation of signal-to-noise ratio for single-photon laser active detection

Yunhang HU^1,2,3,4, Lingjie WANG^1,3,4, Yang LIU^1,2,3,4、*, Lianqiang WANG^1,3,4, and Di ZHOU^1,3,4

Author Affiliations

¹Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China

²University of Chinese Academy of Sciences, Beijing 100049, China

³State Key Laboratory of Applied Optics, Changchun 130033, China

⁴Key Laboratory of Advanced Manufacturing for Optical Systems, Chinese Academy of Sciences, Changchun 130033, China

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Figures & Tables(9)

Fig. 1. Single-photon laser active detection process

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Fig. 2. Schematic diagram of multi-phase screen transmission

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Fig. 3. Schematic diagram of photon reception by single-photon detector

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Fig. 4. Main sources of noise during active detection process of single-photon lasers

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Fig. 5. Relationship between energy of emitted laser pulses and signal-to-noise ratio of echoes under different detection distance conditions

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Fig. 6. Relationship between laser pulse energy and echo signal-to-noise ratio under different receiving aperture sizes

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$Comparison of full-link simulation results under diffraction consideration with model computational results built on basis of lidar equations$

Fig. 7. Comparison of full-link simulation results under diffraction consideration with model computational results built on basis of lidar equations

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Fig. 8. Echo signal-to-noise ratio sizes under consideration of aiming deviation of optic axis

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Table 1. Structure parameters of single-photon laser active detection system

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Table 1. Structure parameters of single-photon laser active detection system

结构	系统参数	数值
激光	波长 $λ$ /nm	1 064
	脉冲能量 $E_{t}$ /μJ	10
	重频 $f_{rep}$ /Hz	100
	脉宽 $t_{p}$ /ns	20
	发散角 $φ$ /mrad	0.1
	光束质量 $β$	1.1
	前置放大器增益 $G$	1
光学系统	发射光学系统透过率 $τ_{t}$ /%	89
	接收光学系统透过率 $τ_{r}$ /%	50
	口径 $A_{r}$ /mm²	250²π
	视场角 $θ_{r}$ /mrad	0.56
	滤光片带宽 $Δ λ$ /nm	0.4
	点源透射比 $T_{sp}$	4.64×10⁻⁹
探测器	探测效率 $η_{r}$	0.6
	探测器感光面 $A_{opt}$ /mm²	0.5²π
	探测器带宽/nm	1 000～1 700
	暗电流 $J_{dc}$ /nA	0.2
	响应时间 $t_{int}$ /ns	10
	死时间 $t_{dead}$ /ms	0.1
	工作温度 $T_{det}$ /K	290
	负载电阻 $R_{L}$ /MΩ	100
其他参数	大气透过率 $τ_{a}$	0.942
其他参数	噪声因子 $f$	0.5

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Yunhang HU, Lingjie WANG, Yang LIU, Lianqiang WANG, Di ZHOU. Mathematical modeling and evaluation of signal-to-noise ratio for single-photon laser active detection[J]. Journal of Applied Optics, 2025, 46(1): 194

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Paper Information

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Received: Dec. 27, 2023

Accepted: --

Published Online: Apr. 1, 2025

The Author Email: Yang LIU (刘洋)

DOI:10.5768/JAO202546.0107001

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology