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Polygonal vortex beams

Polygonal vortex beams
Polygonal vortex beams
We originally exploit the vortex beams with patterns of closed polygons [namely, polygonal vortex beams (PVBs)] generated by a quasi-frequency-degenerate (QFD) Yb:CALGO laser resonator with astigmatic transformation. The PVBs with peculiar patterns of triangular, square, and parallelogram shapes carrying large orbital angular momentums (OAMs) are theoretically investigated and experimentally obtained in the vicinity of the SU(2) degenerate states of laser resonator. The PVBs in QFD states are distinct from the vortex beams with patterns of isolated spots arrays located on the triangle-, square-, and parallelogram-shaped routes [namely, polygonal-spots-array vortex beams (PSA-VBs)] under normal SU(2) degenerate states. Beam profile shape of PVB or PSA-VB and OAM can be controlled by adjusting the cavity length and the position of pump spot. The simulated and experimental results validate the performance of our method to generate PVB, which is of great potential for developing applications such as particle trapping and manipulation.
1943-0655
1-16
Shen, Yijie
42410cf7-8adb-4de6-9175-a1332245c368
Wan, Zhensong
6c0f7cfb-a3ba-420f-8478-6604ab775427
Meng, Yuan
8690642a-48a9-4b47-b0ac-dd1aea60f3b0
Fu, Xing
21bd4974-1d1f-4a6a-84e2-c805ef547450
Gong, Mali
cbf30aad-44d3-49d7-967a-1716d7e80668
Shen, Yijie
42410cf7-8adb-4de6-9175-a1332245c368
Wan, Zhensong
6c0f7cfb-a3ba-420f-8478-6604ab775427
Meng, Yuan
8690642a-48a9-4b47-b0ac-dd1aea60f3b0
Fu, Xing
21bd4974-1d1f-4a6a-84e2-c805ef547450
Gong, Mali
cbf30aad-44d3-49d7-967a-1716d7e80668

Shen, Yijie, Wan, Zhensong, Meng, Yuan, Fu, Xing and Gong, Mali (2018) Polygonal vortex beams. IEEE Photonics Journal, 10 (4), 1-16. (doi:10.1109/JPHOT.2018.2858845).

Record type: Article

Abstract

We originally exploit the vortex beams with patterns of closed polygons [namely, polygonal vortex beams (PVBs)] generated by a quasi-frequency-degenerate (QFD) Yb:CALGO laser resonator with astigmatic transformation. The PVBs with peculiar patterns of triangular, square, and parallelogram shapes carrying large orbital angular momentums (OAMs) are theoretically investigated and experimentally obtained in the vicinity of the SU(2) degenerate states of laser resonator. The PVBs in QFD states are distinct from the vortex beams with patterns of isolated spots arrays located on the triangle-, square-, and parallelogram-shaped routes [namely, polygonal-spots-array vortex beams (PSA-VBs)] under normal SU(2) degenerate states. Beam profile shape of PVB or PSA-VB and OAM can be controlled by adjusting the cavity length and the position of pump spot. The simulated and experimental results validate the performance of our method to generate PVB, which is of great potential for developing applications such as particle trapping and manipulation.

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More information

Accepted/In Press date: 19 July 2018
e-pub ahead of print date: 24 July 2018
Published date: 1 August 2018

Identifiers

Local EPrints ID: 442529
URI: http://eprints.soton.ac.uk/id/eprint/442529
ISSN: 1943-0655
PURE UUID: 23b9676f-ae6c-4758-a519-c8302cb1e714

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Date deposited: 17 Jul 2020 16:31
Last modified: 14 Sep 2021 19:14

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Contributors

Author: Yijie Shen
Author: Zhensong Wan
Author: Yuan Meng
Author: Xing Fu
Author: Mali Gong

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