文献类型：期刊文献

英文题名：Propagation of multi-cosine-Laguerre-Gaussian correlated Schell-model beams in free space and atmospheric turbulence

作者：Zhu, Jie Li, Xiaoli Tang, Huiqin Zhu, Kaicheng

第一作者：朱洁

通信作者：Zhu, KC[1]

机构：[1]Guizhou Inst Technol, Coll Sci, Guiyang 550003, Peoples R China;[2]Cent S Univ, Sch Phys & Elect, Changsha 410083, Peoples R China

第一机构：贵州理工学院理学院

通信机构：corresponding author), Cent S Univ, Sch Phys & Elect, Changsha 410083, Peoples R China.

年份：2017

卷号：25

期号：17

起止页码：20071-20086

外文期刊名：OPTICS EXPRESS

收录：;EI(收录号：20173404070865);Scopus(收录号：2-s2.0-85027682114);WOS:【SCI-EXPANDED(收录号:WOS:000409338000040)】；

基金：High level introduction of talent research start-up fund of Guizhou Institute of Technology

语种：英文

外文关键词：Atmospheric turbulence - Gaussian distribution - Optical communication - Spectral density

摘要：We introduce a class of random stationary, scalar source named as multi-cosineLaguerre- Gaussian-correlated Schell-model (McLGCSM) source whose spectral degree of coherence (SDOC) is a combination of the Laguerre-Gaussian correlated Schell-model (LGCSM) and multi-cosine-Gaussian correlated Schell-model (McGCSM) sources. The analytical expressions for the spectral density function and the propagation factor of a McLGCSM beam propagating in turbulent atmosphere are derived. The statistical properties, such as the spectral intensity and the propagation factor, of a McLGCSM beam are illustrated numerically. It is shown that a McLGCSM beam exhibits a robust ring-shaped beam array with adjustable number and positions in the far field by directly modulating the spatial structure of its SDOC in the source plane. Moreover, we provide a detailed insight into the theoretical origin and characteristics of such a ring-shaped beam array. It is demonstrated that these peculiar shaping properties are the concentrated manifestation of the individual merits respectively associated with the Laguerre- and multi-cosine-related factors of the whole SDOC. Our results provide a novel scheme to generate robust and controllable ring-shaped beam arrays over large distances, and will widen the potentials for manipulation of multiple particles, free-space optical communications and imaging in the atmosphere. (C) 2017 Optical Society of America