Propagation of Lorentz-Gaussian elliptical multi-Gaussian correlated Schell-Model beam in anisotropic turbulence

被引:1
|
作者
Wu, Xu [1 ]
Mao, Xiaolong [1 ]
Wu, Kenan [2 ]
机构
[1] Dalian Maritime Univ, Informat Sci & Technol Coll, Linghai Rd 1, Dalian 116026, Peoples R China
[2] Chinese Acad Sci, Dalian Inst Chem Phys, Key Lab Chem Lasers, Zhongshan Rd 457, Dalian 116023, Peoples R China
基金
中国国家自然科学基金;
关键词
Anisotropic atmospheric turbulence; Lorentz -Gaussian elliptical multi -Gaussian cor; relation Schell -Model beam; Laser propagation; VORTEX BEAMS; FLUCTUATIONS; COHERENCE; INDEX;
D O I
10.1016/j.heliyon.2023.e13501
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The beam spreading, spectral degree of coherence and evolution behavior of the intensity profile of partially coherent Lorentz-Gaussian elliptical multi-Gaussian correlation Schell-Model beam propagating in anisotropic atmospheric turbulence are studied. The analytical expressions of cross-spectral density function, as well as root mean square (rms) beam width, are derived based on the extended Huygens-Fresnel principle and the relationship of Lorentz distribution and Hermitian Gaussian function. With the increases of propagation distance, the elliptical beam will first evolve into Gaussian beam and then change back to elliptical beam. In anisotropic atmo-spheric turbulence, the influence of the inner scale of turbulence on the spectral degree of coherence and rms beam width are obviously greater than that of the outer scale. For Lorentz -Gaussian elliptical multi-Gaussian correlated Schell-Model beams, better propagation perfor-mance was found in anisotropic atmospheric turbulence with larger anisotropic factor and smaller inner scale.
引用
收藏
页数:11
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