Cargando…
Near-field collimation of light carrying orbital angular momentum with bull’s-eye-assisted plasmonic coaxial waveguides
The orbital angular momentum (OAM) of light, as an emerging hotspot in optics and photonics, introduces many degrees of freedom for applications ranging from optical communication and quantum processing to micromanipulation. To achieve a high degree of integration, optical circuits for OAM light are...
Autores principales: | , , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2015
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4498324/ https://www.ncbi.nlm.nih.gov/pubmed/26159423 http://dx.doi.org/10.1038/srep12108 |
_version_ | 1782380606838013952 |
---|---|
author | Pu, Mingbo Ma, Xiaoliang Zhao, Zeyu Li, Xiong Wang, Yanqin Gao, Hui Hu, Chenggang Gao, Ping Wang, Changtao Luo, Xiangang |
author_facet | Pu, Mingbo Ma, Xiaoliang Zhao, Zeyu Li, Xiong Wang, Yanqin Gao, Hui Hu, Chenggang Gao, Ping Wang, Changtao Luo, Xiangang |
author_sort | Pu, Mingbo |
collection | PubMed |
description | The orbital angular momentum (OAM) of light, as an emerging hotspot in optics and photonics, introduces many degrees of freedom for applications ranging from optical communication and quantum processing to micromanipulation. To achieve a high degree of integration, optical circuits for OAM light are essential, which are, however, challenging in the optical regime owing to the lack of well-developed theory. Here we provide a scheme to guide and collimate the OAM beam at the micro- and nano-levels. The coaxial plasmonic slit was exploited as a naturally occurring waveguide for light carrying OAM. Concentric grooves etched on the output surface of the coaxial waveguide were utilized as a plasmonic metasurface to couple the OAM beam to free space with greatly increased beam directivity. Experimental results at λ = 532 nm validated the novel transportation and collimating effect of the OAM beam. Furthermore, dynamic tuning of the topological charges was demonstrated by using a liquid crystal spatial light modulator (SLM). |
format | Online Article Text |
id | pubmed-4498324 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-44983242015-07-13 Near-field collimation of light carrying orbital angular momentum with bull’s-eye-assisted plasmonic coaxial waveguides Pu, Mingbo Ma, Xiaoliang Zhao, Zeyu Li, Xiong Wang, Yanqin Gao, Hui Hu, Chenggang Gao, Ping Wang, Changtao Luo, Xiangang Sci Rep Article The orbital angular momentum (OAM) of light, as an emerging hotspot in optics and photonics, introduces many degrees of freedom for applications ranging from optical communication and quantum processing to micromanipulation. To achieve a high degree of integration, optical circuits for OAM light are essential, which are, however, challenging in the optical regime owing to the lack of well-developed theory. Here we provide a scheme to guide and collimate the OAM beam at the micro- and nano-levels. The coaxial plasmonic slit was exploited as a naturally occurring waveguide for light carrying OAM. Concentric grooves etched on the output surface of the coaxial waveguide were utilized as a plasmonic metasurface to couple the OAM beam to free space with greatly increased beam directivity. Experimental results at λ = 532 nm validated the novel transportation and collimating effect of the OAM beam. Furthermore, dynamic tuning of the topological charges was demonstrated by using a liquid crystal spatial light modulator (SLM). Nature Publishing Group 2015-07-10 /pmc/articles/PMC4498324/ /pubmed/26159423 http://dx.doi.org/10.1038/srep12108 Text en Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Pu, Mingbo Ma, Xiaoliang Zhao, Zeyu Li, Xiong Wang, Yanqin Gao, Hui Hu, Chenggang Gao, Ping Wang, Changtao Luo, Xiangang Near-field collimation of light carrying orbital angular momentum with bull’s-eye-assisted plasmonic coaxial waveguides |
title | Near-field collimation of light carrying orbital angular momentum with bull’s-eye-assisted plasmonic coaxial waveguides |
title_full | Near-field collimation of light carrying orbital angular momentum with bull’s-eye-assisted plasmonic coaxial waveguides |
title_fullStr | Near-field collimation of light carrying orbital angular momentum with bull’s-eye-assisted plasmonic coaxial waveguides |
title_full_unstemmed | Near-field collimation of light carrying orbital angular momentum with bull’s-eye-assisted plasmonic coaxial waveguides |
title_short | Near-field collimation of light carrying orbital angular momentum with bull’s-eye-assisted plasmonic coaxial waveguides |
title_sort | near-field collimation of light carrying orbital angular momentum with bull’s-eye-assisted plasmonic coaxial waveguides |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4498324/ https://www.ncbi.nlm.nih.gov/pubmed/26159423 http://dx.doi.org/10.1038/srep12108 |
work_keys_str_mv | AT pumingbo nearfieldcollimationoflightcarryingorbitalangularmomentumwithbullseyeassistedplasmoniccoaxialwaveguides AT maxiaoliang nearfieldcollimationoflightcarryingorbitalangularmomentumwithbullseyeassistedplasmoniccoaxialwaveguides AT zhaozeyu nearfieldcollimationoflightcarryingorbitalangularmomentumwithbullseyeassistedplasmoniccoaxialwaveguides AT lixiong nearfieldcollimationoflightcarryingorbitalangularmomentumwithbullseyeassistedplasmoniccoaxialwaveguides AT wangyanqin nearfieldcollimationoflightcarryingorbitalangularmomentumwithbullseyeassistedplasmoniccoaxialwaveguides AT gaohui nearfieldcollimationoflightcarryingorbitalangularmomentumwithbullseyeassistedplasmoniccoaxialwaveguides AT huchenggang nearfieldcollimationoflightcarryingorbitalangularmomentumwithbullseyeassistedplasmoniccoaxialwaveguides AT gaoping nearfieldcollimationoflightcarryingorbitalangularmomentumwithbullseyeassistedplasmoniccoaxialwaveguides AT wangchangtao nearfieldcollimationoflightcarryingorbitalangularmomentumwithbullseyeassistedplasmoniccoaxialwaveguides AT luoxiangang nearfieldcollimationoflightcarryingorbitalangularmomentumwithbullseyeassistedplasmoniccoaxialwaveguides |