Propagation Characteristics of Exponential-Cosine Gaussian Vortex Beams
Xin Tong and Daomu Zhao*
Zhejiang Province Key Laboratory of Quantum Technology and Device, Department of Physics, Zhejiang University, Hangzhou 310027, China
Abstract ：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.
收稿日期: 2021-03-24
出版日期: 2021-08-02
:
42.25.-p
(Wave optics)
41.85.Ew
(Particle beam profile, beam intensity)
41.85.Ct
(Particle beam shaping, beam splitting)
42.25.Bs
(Wave propagation, transmission and absorption)
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2021, Vol. 38 
