Statistical Properties of Short-Exposure Laser Patterns in Turbulent Atmosphere of Gaomeigu, Yunnan Province

Junxin Zhang; Haiping Mei; Liujing Shen; Yinbo Huang; Fu Luo; Xiaoyan Wu

doi:10.3788/CJL202148.0105001

Chinese Journal of Lasers, Volume. 48, Issue 1, 0105001(2021)

Statistical Properties of Short-Exposure Laser Patterns in Turbulent Atmosphere of Gaomeigu, Yunnan Province

Junxin Zhang^1,2,3, Haiping Mei^1,3、*, Liujing Shen^1,3,4, Yinbo Huang^1,3, Fu Luo⁵, and Xiaoyan Wu⁵

¹Key Laboratory of Atmospheric Optics, Anhui Institute of Optical and Fine Mechanics, Chinese Academy of Sciences, Hefei, Anhui 230031, China

²Science Island Branch of Graduate School, University of Science and Technology of China, Hefei, Anhui 230026, China

³Advanced Laser Technology Laboratory of Anhui Province, Hefei, Anhui 230037, China

⁴Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui 230601, China

⁵Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, Sichuan 621900, China

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Figures & Tables(13)

Fig. 1. Test layout and scene over open terrain

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Fig. 2. Test layout and scene over gully

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Fig. 3. Short-term exposure spot patterns taken by high-speed camera

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Fig. 4. Long-term exposure spot patterns taken by normal cellphone camera

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Fig. 5. Scintillation indexes fitted with fourth-order polynomial under different apertures

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Fig. 6. Aperture averaging factor versus receiving aperture radius under different scintillation indexes

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Fig. 7. $C_{n}^{2}$ versus time under different transmission distances

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Fig. 8. Relationship between l₀ and $β_{I}^{2}$ (0)

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Fig. 9. Relationship between -3a₃ and $β_{I}^{2}$ (0)

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Fig. 10. Relationship between $|3 (a_{3} - a_{0})|$ and $β_{<}$

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Fig. 11. Power spectra under different transmission distances. (a) 1km; (b) 2km; (c) 3km; (d) 4km; (e) 4.7km

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Fig. 12. Normalized correlation coefficient versus axis offset under 2 km transmission distance

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Table 1. Scintillation characteristics in 1km laser transmission experiment on Jun 20, 2019

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Table 1. Scintillation characteristics in 1km laser transmission experiment on Jun 20, 2019

Moment	$β_{I}^{2}$ (0.276)	$β_{I}^{2}$ (0)	A@r of 0.276m	$C_{n}^{2}$ /m^-2/3	l₀/m
12:55	0.0484	0.9748	0.0497	3.5296×10^-14	0.0181
13:13	0.0569	0.4997	0.1139	1.8094×10^-14	0.0266
13:18	0.0110	0.0174	0.6322	6.2850×10^-16	0.0810
13:27	0.0099	0.0117	0.8462	4.2518×10^-16	0.1333
13:35	0.0298	0.2728	0.1092	9.8765×10^-15	0.0261
13:53	0.0072	0.0614	0.1173	2.2216×10^-15	0.0270
14:22	0.0123	0.0577	0.2132	2.0903×10^-15	0.0367
14:35	0.0248	0.7847	0.0316	2.8413×10^-14	0.0148
14:40	0.0556	0.7967	0.0698	2.8849×10^-14	0.0212
14:46	0.0339	0.8460	0.0401	3.0634×10^-14	0.0165
15:03	0.0085	0.0856	0.0993	3.0992×10^-15	0.0250
15:07	0.0087	0.0295	0.2949	1.0673×10^-15	0.0442
15:23	0.0126	0.1708	0.0738	6.1840×10^-15	0.0217
15:42	0.0061	0.1257	0.0485	4.5502×10^-15	0.0179
16:01	0.0072	0.0994	0.0724	3.5987×10^-15	0.0215
16:03	0.0041	0.1299	0.0316	4.7021×10^-15	0.0148

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Junxin Zhang, Haiping Mei, Liujing Shen, Yinbo Huang, Fu Luo, Xiaoyan Wu. Statistical Properties of Short-Exposure Laser Patterns in Turbulent Atmosphere of Gaomeigu, Yunnan Province[J]. Chinese Journal of Lasers, 2021, 48(1): 0105001

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Paper Information

Category: beam transmission and control

Received: Jun. 23, 2020

Accepted: Sep. 4, 2020

Published Online: Jan. 12, 2021

The Author Email: Mei Haiping (hpmei@aiofm.ac.cn)

DOI:10.3788/CJL202148.0105001

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology