Propagation Characteristics of Exponential-Cosine Gaussian Vortex Beams

• 作者: Xin Tong Daomu Zhao
• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2021,（8）
• 所属期刊栏目: FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS)
• 页码范围: 43-49
• 页数: 7页
• 语种: 英文
• DOI: 10.1088/0256-307X/38/8/084202

摘要

We propose a controllable exponential-Cosine Gaussian vortex(ECGV)beam,which can evolve into the different beam profiles with three parameters:distance modulation factor(DMF),split modulation factor(SMF)and rotation modulation factor(RMF).When SMF is 0,the ECGV beam appears as a perfect single-ring vortex beam and the ring radius can be adjusted by the DMF.We deduce from mathematics and give the reason for the single-ring characteristics.When SMF is not 0,the beam splits symmetrically.DMF,SMF and RMF control the number,distance and rotation angle of the split,respectively.Our experiments verify the correctness of the theory.