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Article

Beam Wander Restrained by Nonlinearity of Femtosecond Laser Filament in Air

by 1,2,†, 1,2,†, 1,2, 1,2, 1,2, 1,2, 1,3 and 1,3,*
1
Institute of Modern Optics, Nankai University, Tianjin 300350, China
2
Tianjin Key Laboratory of Micro-Scale Optical Information Science and Technology, Tianjin 300350, China
3
Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Tianjin 300350, China
*
Author to whom correspondence should be addressed.
Jiewei Guo and Lu Sun are co-first authors of the article.
Academic Editor: Simone Borri
Sensors 2022, 22(13), 4995; https://doi.org/10.3390/s22134995
Received: 14 May 2022 / Revised: 24 June 2022 / Accepted: 30 June 2022 / Published: 2 July 2022
(This article belongs to the Special Issue Sensing with Femtosecond Laser Filamentation)
The filamentation process under atmospheric turbulence is critical to its remote-sensing application. The effects of turbulence intensity and location on the spatial distribution of femtosecond laser filaments in the air were studied. The experimental results show that the nonlinear effect of the filament can restrain the beam wander. When the turbulence intensity was 3.31×1013 cm2/3, the mean deviation of the wander of the filament center was only 27% of that of the linear transmitted beam. The change in turbulence location would lead to a change in the standard deviation of the beam centroid drift. Results also show that the filament length would be shortened, and that the filament would end up earlier in a turbulent environment. Since the filamentation-based LIDAR has been highly expected as an evolution multitrace pollutant remote-sensing technique, the study promotes our understanding of how turbulence influences filamentation and advances atmospheric remote sensing by applying a filament. View Full-Text
Keywords: femtosecond laser filamentation; turbulence; beam wander; filament LIDAR femtosecond laser filamentation; turbulence; beam wander; filament LIDAR
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MDPI and ACS Style

Guo, J.; Sun, L.; Liu, J.; Shang, B.; Tao, S.; Zhang, N.; Lin, L.; Zhang, Z. Beam Wander Restrained by Nonlinearity of Femtosecond Laser Filament in Air. Sensors 2022, 22, 4995. https://doi.org/10.3390/s22134995

AMA Style

Guo J, Sun L, Liu J, Shang B, Tao S, Zhang N, Lin L, Zhang Z. Beam Wander Restrained by Nonlinearity of Femtosecond Laser Filament in Air. Sensors. 2022; 22(13):4995. https://doi.org/10.3390/s22134995

Chicago/Turabian Style

Guo, Jiewei, Lu Sun, Jinpei Liu, Binpeng Shang, Shishi Tao, Nan Zhang, Lie Lin, and Zhi Zhang. 2022. "Beam Wander Restrained by Nonlinearity of Femtosecond Laser Filament in Air" Sensors 22, no. 13: 4995. https://doi.org/10.3390/s22134995

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