Circular Airy beams realized via the photopatterning of liquid crystals [Invited]

Yuan Zhang, Bingyan Wei, Sheng Liu, Peng Li, Xin Chen, Yunlong Wu, Xian'an Dou, Jianlin Zhao

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The generation of an autofocusing circular Airy beam (CAB) is realized via a liquid crystal (LC) geometric phase plate with a simple configuration. The fabrication of the LC plate is based on the photoalignment technology and dynamic exposure skill. A focal length of 74 cm is obtained, and the propagation dynamics are consistent with the simulations. Besides, a defocusing CAB is also generated, and the switch between the autofocusing and defocusing CABs can be achieved by controlling the input polarization state. This work provides a convenient and flexible approach to acquire CABs, which will promote the CAB-related applications and researches.

Original languageEnglish
Article number080008
JournalChinese Optics Letters
Volume18
Issue number8
DOIs
StatePublished - 10 Aug 2020

Keywords

  • Autofocusing
  • Circular Airy beam
  • Liquid crystal
  • Photoalignment technique

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