Affiliation:
1. Chinese Academy of Sciences
2. Institute of Optics and Electronics, Chinese Academy of Sciences
3. University of Chinese Academy of Sciences
Abstract
In this Letter, a simple optical vortex convolution generator is proposed where a microlens array (MLA) is utilized as an optical convolution device, and a focusing lens (FL) is employed to obtain the far field, which can convert a single optical vortex into a vortex array. Further, the optical field distribution on the focal plane of the FL is theoretically analyzed and experimentally verified using three MLAs of different sizes. Moreover, in the experiments, behind the FL, the self-imaging Talbot effect of the vortex array is also observed. Meanwhile, the generation of the high-order vortex array is also investigated. This method, with a simple structure and high optical power efficiency, can generate high spatial frequency vortex arrays using devices with low spatial frequency and has excellent application prospects in the field of optical tweezers, optical communication, optical processing, etc.
Funder
Equipment Pre-Research Key Laboratory Fund Grant
Frontier Research Fund of Institute of Optics and Electronics, China Academy of Sciences Grant
Subject
Atomic and Molecular Physics, and Optics
Cited by
2 articles.
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