文献类型：期刊文献

英文题名：Multiple optical cages generated by focusing a Laguerre-cosine-Gaussian correlated Schell-model beam

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

第一作者：Zhu, Jie

通信作者：Zhu, KC[1]

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

年份：2017

卷号：27

期号：11

外文期刊名：LASER PHYSICS

收录：;EI(收录号：20180204619832);Scopus(收录号：2-s2.0-85040008118);WOS:【SCI-EXPANDED(收录号:WOS:000412926900001)】；

基金：This research is supported by the high level introduction of talent research start-up fund of Guizhou Institute of Technology, China.

语种：英文

外文关键词：partially coherent beams; non-conventional spectral degree of coherence; focusing properties; multiple optical cages

摘要：We introduce a new kind of random stationary, scalar beam named Laguerre-cosine-Gaussian correlated Schell-model (LcGCSM) beam whose spectral degree of coherence (SDOC) is a Gaussian function modulated by both non-conventional Laguerre-and cosine-type factors. The analytical expressions for the cross-spectral density of a LcGCSM beam propagating through a paraxial ABCD optical system are derived. The intensity distributions of such beams focused through a thin lens are illustrated numerically. It is found that a LcGCSM beam exhibits self-splitting and self-shaping properties during propagation, evolving into multiple optical cages near the focal region. By directly modulating the spatial structure of the SDOC in the source plane, the characteristics of the optical cages derived from the proposed LcGCSM beams can be adjusted flexibly. Moreover, we demonstrate that these nontrivial focusing properties of a LcGCSM beam can be well elucidated with the combination effect of individual merits associated with each non-conventional SDOC component of the entire SDOC. Therefore, our results provide a new route for generating and controlling multiple optical cages, and will be useful for trapping multiple particles, guiding multiple atoms and optical communications.