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通过像散模式转换器产生具有任意轨道角动量取向的时空光学涡旋。

Spatiotemporal optical vortices with arbitrary orbital angular momentum orientation by astigmatic mode converters.

作者信息

Zang Yimin, Mirando Amal, Chong Andy

机构信息

Department of Electro-Optics and Photonics, University of Dayton, Dayton, USA.

Department of Physics, University of Dayton, Dayton, USA.

出版信息

Nanophotonics. 2022 Feb 16;11(4):745-752. doi: 10.1515/nanoph-2021-0496. eCollection 2022 Jan.

DOI:10.1515/nanoph-2021-0496
PMID:39635388
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11501289/
Abstract

We generate a spatiotemporal optical vortex (STOV) with tunable orbital angular momentum (OAM) orientation by a simple lens system. We utilize a cylindrical lens system, which is an astigmatic mode converter, to add longitudinal angular momentum to tilt the purely transverse OAM in an arbitrary direction. The amount of tilt is tunable by adjusting the lens system, and thus the OAM direction is continuously adjustable. STOVs with adjustable OAM directions have been verified theoretically and experimentally. We believe such direction controllable OAMs will enrich future applications.

摘要

我们通过一个简单的透镜系统生成了具有可调轨道角动量（OAM）方向的时空光学涡旋（STOV）。我们利用一个圆柱透镜系统，它是一个像散模式转换器，来添加纵向角动量，从而在任意方向上倾斜纯横向的OAM。倾斜量可通过调整透镜系统来调节，因此OAM方向是连续可调的。具有可调OAM方向的STOV已在理论和实验上得到验证。我们相信这种方向可控的OAM将丰富未来的应用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dae4/11501289/334c3baa2494/j_nanoph-2021-0496_fig_009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dae4/11501289/fe3d5b320a9f/j_nanoph-2021-0496_fig_001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dae4/11501289/279d908da87c/j_nanoph-2021-0496_fig_002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dae4/11501289/401291ab6a93/j_nanoph-2021-0496_fig_003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dae4/11501289/942895562d81/j_nanoph-2021-0496_fig_004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dae4/11501289/f38be5e07a17/j_nanoph-2021-0496_fig_005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dae4/11501289/137e1f06ff14/j_nanoph-2021-0496_fig_006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dae4/11501289/8a9ea8d09b8e/j_nanoph-2021-0496_fig_007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dae4/11501289/7558164dba34/j_nanoph-2021-0496_fig_008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dae4/11501289/334c3baa2494/j_nanoph-2021-0496_fig_009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dae4/11501289/fe3d5b320a9f/j_nanoph-2021-0496_fig_001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dae4/11501289/279d908da87c/j_nanoph-2021-0496_fig_002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dae4/11501289/401291ab6a93/j_nanoph-2021-0496_fig_003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dae4/11501289/942895562d81/j_nanoph-2021-0496_fig_004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dae4/11501289/f38be5e07a17/j_nanoph-2021-0496_fig_005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dae4/11501289/137e1f06ff14/j_nanoph-2021-0496_fig_006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dae4/11501289/8a9ea8d09b8e/j_nanoph-2021-0496_fig_007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dae4/11501289/7558164dba34/j_nanoph-2021-0496_fig_008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dae4/11501289/334c3baa2494/j_nanoph-2021-0496_fig_009.jpg

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