Chinese Optics Letters, Volume. 15, Issue 3, 030011(2017)
Highly adjustable helical beam: design and propagation characteristics (Invited Paper)
Fig. 1. Design of the helical beams. (a) Superposition of light rays in blue to form a helical caustic in red. (b) Angular spectrum of the helical beam in the initial plane with the phase distribution in grayscale, and an additional ring-shaped amplitude distribution in red with a spatial frequency width described by
Fig. 2. Cross-sectional intensity distribution of helical beams with spatial frequency width
Fig. 3. Propagation dynamics of helical beams with different numbers of main lobes. The helical beams presented include (a) one-lobe, (b) two-lobe, (c) three-lobe, and (d) four-lobe with slightly different periods of 2018, 1970, 1917, and 2087 μm, respectively.
Fig. 4. Characterization of the helical beams with different numbers of main lobes in Fig.
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Yuanhui Wen, Yujie Chen, Yanfeng Zhang, Siyuan Yu, "Highly adjustable helical beam: design and propagation characteristics (Invited Paper)," Chin. Opt. Lett. 15, 030011 (2017)
Special Issue: COMPLEX OPTICAL FIELDS
Received: Jan. 26, 2017
Accepted: Feb. 13, 2017
Published Online: Jul. 25, 2018
The Author Email: Yujie Chen (chenyj69@mail.sysu.edu.cn)