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

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摘要

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.

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作者单位:

    Northwestern Polytechnical University
    Northwestern Polytechnical University
    Northwestern Polytechnical University
    Northwestern Polytechnical University
    Northwestern Polytechnical University
    State Key Laboratory of Pulsed Power Laser Technology
    State Key Laboratory of Pulsed Power Laser Technology
    Northwestern Polytechnical University

引用该论文

Zhang Yuan,Wei Bingyan,Liu Sheng,Li Peng,Chen Xin,wu yunlong,Dou Xianan,Zhao Jianlin. Circular Airy beams realized via the photopatterning of liquid crystals[J].Chinese Optics Letters,2020,18(8):08.