Spectral self-imaging of optical orbital angular momentum modes

The Talbot self-imaging effect is mostly present in the forms of space or time, or in the frequency domain by the Fourier duality. Here, we disclose a new spectral Talbot effect arising in optical orbital angular momentum (OAM) modes. The effect occurs in the context of petal-like beams, which are t...

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Autores principales:	Zhongzheng Lin, Jianqi Hu, Yujie Chen, Siyuan Yu, Camille-Sophie Brès
Formato:	article
Lenguaje:	EN
Publicado:	AIP Publishing LLC 2021
Materias:	Applied optics. Photonics TA1501-1820
Acceso en línea:	https://doaj.org/article/047b7deec1534c3eb20f6e9c624325bb
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id	oai:doaj.org-article:047b7deec1534c3eb20f6e9c624325bb
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spelling	oai:doaj.org-article:047b7deec1534c3eb20f6e9c624325bb2021-12-01T18:51:31ZSpectral self-imaging of optical orbital angular momentum modes2378-096710.1063/5.0067668https://doaj.org/article/047b7deec1534c3eb20f6e9c624325bb2021-11-01T00:00:00Zhttp://dx.doi.org/10.1063/5.0067668https://doaj.org/toc/2378-0967The Talbot self-imaging effect is mostly present in the forms of space or time, or in the frequency domain by the Fourier duality. Here, we disclose a new spectral Talbot effect arising in optical orbital angular momentum (OAM) modes. The effect occurs in the context of petal-like beams, which are typically constructed from a number of in-phase equidistant OAM modes with at least one void mode in between. When illuminating such beams on phase masks that are azimuthally modulated with Talbot phases, the initial OAM modes are self-imaged to create new OAM modes, meanwhile preserving the initial OAM spectral profile. Such a phenomenon is theoretically predicted, and a close analogy is drawn with the spectral Talbot effect of frequency combs. The prediction is also experimentally confirmed by observing versatile spectral self-imaging on various optical petal-like beams.Zhongzheng LinJianqi HuYujie ChenSiyuan YuCamille-Sophie BrèsAIP Publishing LLCarticleApplied optics. PhotonicsTA1501-1820ENAPL Photonics, Vol 6, Iss 11, Pp 111302-111302-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Applied optics. Photonics TA1501-1820
spellingShingle	Applied optics. Photonics TA1501-1820 Zhongzheng Lin Jianqi Hu Yujie Chen Siyuan Yu Camille-Sophie Brès Spectral self-imaging of optical orbital angular momentum modes
description	The Talbot self-imaging effect is mostly present in the forms of space or time, or in the frequency domain by the Fourier duality. Here, we disclose a new spectral Talbot effect arising in optical orbital angular momentum (OAM) modes. The effect occurs in the context of petal-like beams, which are typically constructed from a number of in-phase equidistant OAM modes with at least one void mode in between. When illuminating such beams on phase masks that are azimuthally modulated with Talbot phases, the initial OAM modes are self-imaged to create new OAM modes, meanwhile preserving the initial OAM spectral profile. Such a phenomenon is theoretically predicted, and a close analogy is drawn with the spectral Talbot effect of frequency combs. The prediction is also experimentally confirmed by observing versatile spectral self-imaging on various optical petal-like beams.
format	article
author	Zhongzheng Lin Jianqi Hu Yujie Chen Siyuan Yu Camille-Sophie Brès
author_facet	Zhongzheng Lin Jianqi Hu Yujie Chen Siyuan Yu Camille-Sophie Brès
author_sort	Zhongzheng Lin
title	Spectral self-imaging of optical orbital angular momentum modes
title_short	Spectral self-imaging of optical orbital angular momentum modes
title_full	Spectral self-imaging of optical orbital angular momentum modes
title_fullStr	Spectral self-imaging of optical orbital angular momentum modes
title_full_unstemmed	Spectral self-imaging of optical orbital angular momentum modes
title_sort	spectral self-imaging of optical orbital angular momentum modes
publisher	AIP Publishing LLC
publishDate	2021
url	https://doaj.org/article/047b7deec1534c3eb20f6e9c624325bb
work_keys_str_mv	AT zhongzhenglin spectralselfimagingofopticalorbitalangularmomentummodes AT jianqihu spectralselfimagingofopticalorbitalangularmomentummodes AT yujiechen spectralselfimagingofopticalorbitalangularmomentummodes AT siyuanyu spectralselfimagingofopticalorbitalangularmomentummodes AT camillesophiebres spectralselfimagingofopticalorbitalangularmomentummodes
_version_	1718404672790724608

Spectral self-imaging of optical orbital angular momentum modes

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