光学
微透镜
旋涡
涡流
光学镊子
塔尔博特效应
物理
镜头(地质)
衍射
梁(结构)
热力学
作者
Ao Tang,Guangyun Xiong,Feng Shen
出处
期刊:Optics Letters
[The Optical Society]
日期:2023-03-03
卷期号:48 (7): 1866-1866
被引量:3
摘要
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.
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