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Metasurface-assisted orbital angular momentum carrying Bessel-Gaussian Laser: proposal and simulation
Bessel-Gaussian beams have distinct properties of suppressed diffraction divergence and self-reconstruction. In this paper, we propose and simulate metasurface-assisted orbital angular momentum (OAM) carrying Bessel-Gaussian laser. The laser can be regarded as a Fabry-Perot cavity formed by one part...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5966441/ https://www.ncbi.nlm.nih.gov/pubmed/29795236 http://dx.doi.org/10.1038/s41598-018-26361-0 |
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author | Zhou, Nan Wang, Jian |
author_facet | Zhou, Nan Wang, Jian |
author_sort | Zhou, Nan |
collection | PubMed |
description | Bessel-Gaussian beams have distinct properties of suppressed diffraction divergence and self-reconstruction. In this paper, we propose and simulate metasurface-assisted orbital angular momentum (OAM) carrying Bessel-Gaussian laser. The laser can be regarded as a Fabry-Perot cavity formed by one partially transparent output plane mirror and the other metasurface-based reflector mirror. The gain medium of Nd:YVO(4) enables the lasing wavelength at 1064 nm with a 808 nm laser serving as the pump. The sub-wavelength structure of metasurface facilitates flexible spatial light manipulation. The compact metasurface-based reflector provides combined phase functions of an axicon and a spherical mirror. By appropriately selecting the size of output mirror and inserting mode-selection element in the laser cavity, different orders of OAM-carrying Bessel-Gaussian lasing modes are achievable. The lasing Bessel-Gaussian(0), Bessel-Gaussian(01)(+), Bessel-Gaussian(02)(+) and Bessel-Gaussian(03)(+) modes have high fidelities of ~0.889, ~0.889, ~0.881 and ~0.879, respectively. The metasurface fabrication tolerance and the dependence of threshold power and output lasing power on the length of gain medium, beam radius of pump and transmittance of output mirror are also discussed. The obtained results show successful implementation of metasurface-assisted OAM-carrying Bessel-Gaussian laser with favorable performance. The metasurface-assisted OAM-carrying Bessel-Gaussian laser may find wide OAM-enabled communication and non-communication applications. |
format | Online Article Text |
id | pubmed-5966441 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-59664412018-05-24 Metasurface-assisted orbital angular momentum carrying Bessel-Gaussian Laser: proposal and simulation Zhou, Nan Wang, Jian Sci Rep Article Bessel-Gaussian beams have distinct properties of suppressed diffraction divergence and self-reconstruction. In this paper, we propose and simulate metasurface-assisted orbital angular momentum (OAM) carrying Bessel-Gaussian laser. The laser can be regarded as a Fabry-Perot cavity formed by one partially transparent output plane mirror and the other metasurface-based reflector mirror. The gain medium of Nd:YVO(4) enables the lasing wavelength at 1064 nm with a 808 nm laser serving as the pump. The sub-wavelength structure of metasurface facilitates flexible spatial light manipulation. The compact metasurface-based reflector provides combined phase functions of an axicon and a spherical mirror. By appropriately selecting the size of output mirror and inserting mode-selection element in the laser cavity, different orders of OAM-carrying Bessel-Gaussian lasing modes are achievable. The lasing Bessel-Gaussian(0), Bessel-Gaussian(01)(+), Bessel-Gaussian(02)(+) and Bessel-Gaussian(03)(+) modes have high fidelities of ~0.889, ~0.889, ~0.881 and ~0.879, respectively. The metasurface fabrication tolerance and the dependence of threshold power and output lasing power on the length of gain medium, beam radius of pump and transmittance of output mirror are also discussed. The obtained results show successful implementation of metasurface-assisted OAM-carrying Bessel-Gaussian laser with favorable performance. The metasurface-assisted OAM-carrying Bessel-Gaussian laser may find wide OAM-enabled communication and non-communication applications. Nature Publishing Group UK 2018-05-23 /pmc/articles/PMC5966441/ /pubmed/29795236 http://dx.doi.org/10.1038/s41598-018-26361-0 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Zhou, Nan Wang, Jian Metasurface-assisted orbital angular momentum carrying Bessel-Gaussian Laser: proposal and simulation |
title | Metasurface-assisted orbital angular momentum carrying Bessel-Gaussian Laser: proposal and simulation |
title_full | Metasurface-assisted orbital angular momentum carrying Bessel-Gaussian Laser: proposal and simulation |
title_fullStr | Metasurface-assisted orbital angular momentum carrying Bessel-Gaussian Laser: proposal and simulation |
title_full_unstemmed | Metasurface-assisted orbital angular momentum carrying Bessel-Gaussian Laser: proposal and simulation |
title_short | Metasurface-assisted orbital angular momentum carrying Bessel-Gaussian Laser: proposal and simulation |
title_sort | metasurface-assisted orbital angular momentum carrying bessel-gaussian laser: proposal and simulation |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5966441/ https://www.ncbi.nlm.nih.gov/pubmed/29795236 http://dx.doi.org/10.1038/s41598-018-26361-0 |
work_keys_str_mv | AT zhounan metasurfaceassistedorbitalangularmomentumcarryingbesselgaussianlaserproposalandsimulation AT wangjian metasurfaceassistedorbitalangularmomentumcarryingbesselgaussianlaserproposalandsimulation |