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- Title
Propagation Characteristics of a Twisted Cosine-Gaussian Correlated Radially Polarized Beam.
- Authors
Zhang, Jipeng; Wang, Jing; Huang, Hongkun; Wang, Haiyan; Zhu, Shijun; Li, Zhenhua; Lu, Jian
- Abstract
Featured Application: The results provide a useful guideline for manipulation of novel vector structure beams by using twist phases and customized correlation functions, and promote important potential applications, ranging from beam shaping, optical tweezers, optical imaging, and free space optical communications. Recently, partially coherent beams with twist phases have attracted growing interest due to their nontrivial dynamic characteristics. In this work, the propagation characteristics of a twisted cosine-Gaussian correlated radially polarized beam such as the spectral intensity, the spectral degree of coherence, the degree of polarization, the state of polarization, and the spectral change are investigated in detail. Due to the presence of the twisted phase, the beam spot, the degree of coherence, and the state of polarization experience rotation during transmission, but the degree of polarization is not twisted. Meanwhile, although their rotation speeds closely depend on the value of the twist factor, they all undergo a rotation of π / 2 when they reach the focal plane. Furthermore, the effect of the twist phase on the spectral change is similar to the coherence, which is achieved by modulating the spectral density distribution during transmission. The twist phase opens up a useful guideline for manipulation of novel vector structure beams and enriches potential applications in the field of beam shaping, optical tweezers, optical imaging, and free space optical communications.
- Subjects
POLARIZED beams (Nuclear physics); GAUSSIAN processes; SPECTRAL energy distribution
- Publication
Applied Sciences (2076-3417), 2018, Vol 8, Issue 9, p1485
- ISSN
2076-3417
- Publication type
Article
- DOI
10.3390/app8091485