Quality and spatial intensity distribution characteristics of short-exposure spot images of a supercontinuum laser in a turbulent atmosphere

Yaqian Li; Zhangjun Wang; Zhangjun Wang; Xianmei Qian; Xianmei Qian; Chao Chen; Chao Chen; Xianxin Li; Xianxin Li; Xiufen Wang; Hui Li; Quanfeng Zhuang; Boyang Xue; Boyang Xue; Yang Yu; Xin Pan; Xin Pan

doi:10.1364/AO.498281

Applied Optics
Vol. 62,
Issue 25,
pp. 6714-6723
(2023)
•https://doi.org/10.1364/AO.498281

Quality and spatial intensity distribution characteristics of short-exposure spot images of a supercontinuum laser in a turbulent atmosphere

Yaqian Li, Zhangjun Wang, Xianmei Qian, Chao Chen, Xianxin Li, Xiufen Wang, Hui Li, Quanfeng Zhuang, Boyang Xue, Yang Yu, and Xin Pan

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Yaqian Li, Zhangjun Wang, Xianmei Qian, Chao Chen, Xianxin Li, Xiufen Wang, Hui Li, Quanfeng Zhuang, Boyang Xue, Yang Yu, and Xin Pan, "Quality and spatial intensity distribution characteristics of short-exposure spot images of a supercontinuum laser in a turbulent atmosphere," Appl. Opt. 62, 6714-6723 (2023)

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Abstract

In this study, considering the combined effects of atmospheric attenuation and turbulence, we examine the spot quality and spatial intensity distribution characteristics of a supercontinuum (SC) laser propagating in a turbulent atmosphere using the multi-layer phase-screen method. An increase in turbulence strength or a decrease in the initial beam radius resulted in a greater impact of the atmospheric turbulence on the SC laser. A decrease in source coherence results in the deterioration of the image quality of the far-field spot. Under moderate to strong turbulence, the scintillation index decreased as the source coherence decreased; however, the opposite trend was observed under weak turbulence. These results are significant for the advancement and optimization of SC laser systems.

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Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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	$β_{I, o n, s c}^{2}$		$β_{I, o n, M P C B}^{2}$
$C_{n}^{2} / m^{- 2 / 3}$	$l_{c} = 2$ cm	$l_{c} = 4$ cm	$l_{c} = 2$ cm	$l_{c} = 4$ cm
$2.5 \times 10^{- 16}$	0.085	0.018	0.106	0.020
$5.5 \times 10^{- 16}$	0.084	0.019	0.109	0.025
$2.5 \times 10^{- 15}$	0.110	0.062	0.130	0.059
$5.5 \times 10^{- 15}$	0.150	0.111	0.161	0.117
$2.5 \times 10^{- 14}$	0.370	0.427	0.402	0.497
$2.5 \times 10^{- 13}$	1.162	1.657	1.507	2.196

	SC Laser				MPCB
$C_{n}^{2} / m^{- 2 / 3}$	Mean	Std	$s_{r}$	$k_{r}$	Mean	Std	$s_{r}$	$k_{r}$
$2.5 \times 10^{- 16}$	7.259	0.291	−0.053	−0.480	7.556	0.326	−0.038	−0.427
$2.5 \times 10^{- 15}$	7.263	0.325	−0.082	−0.349	7.544	0.353	−0.061	−0.324
$2.5 \times 10^{- 14}$	7.032	0.571	−0.316	−0.163	7.305	0.610	−0.500	0.161

	$β_{I, o n, s c}^{2}$		$β_{I, o n, M P C B}^{2}$
$C_{n}^{2} / m^{- 2 / 3}$	$l_{c} = 2$ cm	$l_{c} = 4$ cm	$l_{c} = 2$ cm	$l_{c} = 4$ cm
$2.5 \times 10^{- 16}$	0.085	0.018	0.106	0.020
$5.5 \times 10^{- 16}$	0.084	0.019	0.109	0.025
$2.5 \times 10^{- 15}$	0.110	0.062	0.130	0.059
$5.5 \times 10^{- 15}$	0.150	0.111	0.161	0.117
$2.5 \times 10^{- 14}$	0.370	0.427	0.402	0.497
$2.5 \times 10^{- 13}$	1.162	1.657	1.507	2.196

	SC Laser				MPCB
$C_{n}^{2} / m^{- 2 / 3}$	Mean	Std	$s_{r}$	$k_{r}$	Mean	Std	$s_{r}$	$k_{r}$
$2.5 \times 10^{- 16}$	7.259	0.291	−0.053	−0.480	7.556	0.326	−0.038	−0.427
$2.5 \times 10^{- 15}$	7.263	0.325	−0.082	−0.349	7.544	0.353	−0.061	−0.324
$2.5 \times 10^{- 14}$	7.032	0.571	−0.316	−0.163	7.305	0.610	−0.500	0.161

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Applied Optics