Generalized high-order twisted partially coherent beams and their propagation characteristics

作     者：Hai-Yun Wang Zhao-Hui Yang Kun Liu Ya-Hong Chen Lin Liu Fei Wang Yang-Jian Cai Hai-Yun Wang;Zhao-Hui Yang;Kun Liu;Ya-Hong Chen;Lin Liu;Fei Wang;Yang-Jian Cai

作者机构：School of Physical Science and Technology&Collaborative Innovation Center of Suzhou Nano Science and TechnologySoochow UniversitySuzhou 215006China Shandong Provincial Engineering and Technical Center of Light Manipulations&Shandong Provincial Key Laboratory of Optics and Photonic DevicesSchool of Physics and ElectronicsShandong Normal UniversityJinan 250014China 

出 版 物：《Frontiers of physics》 (物理学前沿（英文版）)

年 卷 期：2022年第17卷第5期

页      面：167-174页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：This work was supported by the National Key Research and Development Program of China(Grant No.2019YFA0705000) National Natural Science Foundation of China(Grant Nos.11874046,11974218,11904247,12104263,12174279,and 12192254) Innovation Group of Jinan(No.2018GXRC010) Local Science and Technology Development Project of the Central Government(No.YDZX20203700001766) 

主　　题：light manipulation statistical optics twist phase coherence structure orbital angular momentum 

摘      要：Twist phase is a nontrivial statistical phase that only exists in partially coherent fields,which makes the beam carry orbital angular momentum(OAM).In this paper,we introduce a new kind of partially coherent beams carrying high-order twist phase,named generalized high-order twisted partially coherent beams(GHTPCBs).The propagation dynamics such as the spectral density and OAM flux density propagating in free space are investigated numerically with the help of mode superposition and fast Fourier transform(FFT)*** results show that the GHTPCBs are capable of self-focusing,and the beam spot during propagation exhibits teardrop-like or the diamond-like shape in some certain ***,the influences of the twist order and the twist factor on the OAM flux density during propagation are also illustrated in ***,we experimentally synthesize the GHTPCBs with controllable twist phase by means of pseudo-mode superposition and measure their spectral density during *** experimental results agree well with the theoretical *** studies may find applications in nonlinear optics and particle trapping.