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Photonics
Special Issues
Advances and Application of Structured Light
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Special Issue "Advances and Application of Structured Light"

A special issue of Photonics (ISSN 2304-6732). This special issue belongs to the section "Lasers, Light Sources and Sensors".

Deadline for manuscript submissions: 10 November 2023 | Viewed by 1739

Special Issue Editors

Prof. Dr. Yongnan Li

E-Mail Website
Guest Editor
School of Physics, Nankai University, Tianjin 300071, China
Interests: vector beam; orbital angular momentum; optical nonlinearity; high-dimensional entanglement; optical imaging
Prof. Dr. Peng Li

E-Mail Website
Guest Editor
School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, China
Interests: diffraction theory; numerical aperture; laser; berry phase; holograms; optics; auto-focusing; transverse acceleration
Dr. Xinxing Zhou

E-Mail Website
Guest Editor
School of Physics and Electronics, Hunan Normal University, Changsha 410081, China
Interests: photonic spin–orbit interaction; optical precise metrology and sensing
Prof. Dr. Ling-Jun Kong

E-Mail Website
Guest Editor
School of Physics, Beijing Institute of Technology, Beijing 100081, China
Interests: orbital angular momentum; quantum entanglement; quantum holography; metasurface

Special Issue Information

Dear Colleagues,

Structured light is derived from the ability to tailor light and usually refers to the spatial control of amplitude, phase, and polarization. Microscopes, holography, optical communications, and laser machining are just several of the domains that have evolved over the past decade owing to the advances in wavefront-shaping platforms. Recently, spatiotemporally coupled wave packets have been reported and offer an unprecedented level of light manipulation in space and time. Nevertheless, with the deepening and extension of research, many new problems and challenges have emerged.  The aim of this Topic is to provide the latest theoretical and experimental methods for the creation, detection, and control of the structured light. It is hoped that the contents of this Topic can provide useful information and technical references for interested readers. This publication will consist of topical research including (but not limited to) the following areas:

  • High-dimensional structured light
  • Spatiotemporal optical vortex
  • Light shaping
  • Vortex laser
  • OAM entanglement
  • Machine learning
  • Nonlinear optics
  • Photonic spin–orbit interaction
  • Topology of structured light
  • Optical imaging
  • Optical manipulation

Prof. Dr. Yongnan Li
Prof. Dr. Peng Li
Dr. Xinxing Zhou
Prof. Dr. Ling-Jun Kong
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Photonics is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1800 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • polarization
  • spatial mode
  • spin and orbital angular momentum
  • spin–orbit interaction
  • laser
  • holography
  • metasurface
  • optical trapping
  • topology
  • machine learning

Published Papers (3 papers)

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Research

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Communication
Intra-Cavity Cascaded Pumped 946/1030 nm Dual-Wavelength Vortex Laser Using a Spot-Defect Mirror
by
Yashuai Yang
,
Yongliang Li
,
Xinyi Zhu
,
Chi Wang
and
Chao Yang
Photonics 2023, 10(5), 554; https://doi.org/10.3390/photonics10050554 - 10 May 2023
Viewed by 336
Abstract
Due to their unique properties, vortex lasers have high application value in frontier fields such as optical micromanipulation, super-resolution imaging, quantum entanglement, and optical communication. In this study, we demonstrated a 946/1030 nm Laguerre-Gaussian (LG01) mode dual-wavelength vortex laser by using [...] Read more.
Due to their unique properties, vortex lasers have high application value in frontier fields such as optical micromanipulation, super-resolution imaging, quantum entanglement, and optical communication. In this study, we demonstrated a 946/1030 nm Laguerre-Gaussian (LG01) mode dual-wavelength vortex laser by using an intracavity cascade pumped structure and a spot-defect output mirror. Using a coaxial linear cavity structure, the 808 nm laser diode (LD) was used to end-pump the Nd:YAG crystal to generate a 946 nm laser and then use it to directly pump the Yb:YAG crystal in the cavity to generate a 1030 nm laser, and finally a 946/1030 nm dual-wavelength laser came out. By making a spot defect in the center of the output mirror to suppress the oscillation of the fundamental Gaussian mode laser and carefully adjusting the position of the laser crystals, the LG01 mode dual-wavelength vortex laser was output in single handedness. When the pump power was 40 W, the total output was 664 mW (356 and 308 mW at 946 and 1030 nm LG01 mode vortex lasers), and the total optical-optical conversion efficiency was 1.7%; the output power fluctuations of 946 and 1030 nm LG01 mode vortex lasers within 1 h were 3.43% and 3.13%, respectively; the beam quality factors M2 of 946 and 1030 nm LG01 mode vortex lasers were 2.35 and 2.40, respectively. It was proved that the generated dual-wavelength vortex laser had the wavefront phase expiϕ by the self-interference method. Full article
(This article belongs to the Special Issue Advances and Application of Structured Light)
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Communication
Topological Charge Measurement of a Partially Coherent Vortex Beam Using Dual Cylindrical Lenses with an Arbitrary Angle
by
Xiaotan Lu
,
Zhuoyi Wang
,
Xingyuan Lu
,
Chengliang Zhao
and
Yangjian Cai
Photonics 2023, 10(4), 444; https://doi.org/10.3390/photonics10040444 - 13 Apr 2023
Viewed by 395
Abstract
For a partially coherent Laguerre–Gaussian (PCLG) vortex beam, information regarding the topological charge (TC) is concealed in the cross-spectral density (CSD) function phase. Herein, a flexible method for the simultaneous determination of the sign and magnitude of the TC for a PCLG vortex [...] Read more.
For a partially coherent Laguerre–Gaussian (PCLG) vortex beam, information regarding the topological charge (TC) is concealed in the cross-spectral density (CSD) function phase. Herein, a flexible method for the simultaneous determination of the sign and magnitude of the TC for a PCLG vortex beam is proposed based on the measured CSD amplitude and phase after the beam propagates through a dual cylindrical lens with adjustable angles. Both the stripes in the CSD amplitude and phase exhibit quantitative relationships with the value of TC, that is, N=2l+1. Meanwhile, the angle adjustability of cylindrical lenses allows flexible measurements, thus rendering the scheme effective for both high and extreme coherences. Full article
(This article belongs to the Special Issue Advances and Application of Structured Light)
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Article
Generation, Topological Charge, and Orbital Angular Momentum of Off-Axis Double Vortex Beams
by
Mingxian Guo
,
Wei Le
,
Chao Wang
,
Guanghao Rui
,
Zhuqing Zhu
,
Jun He
and
Bing Gu
Photonics 2023, 10(4), 368; https://doi.org/10.3390/photonics10040368 - 25 Mar 2023
Cited by 1 | Viewed by 623
Abstract
Compared with the on-axis vortex beam and the off-axis single vortex beam, the off-axis double vortex beam has more control degrees of freedom and brings rich physical properties. In this work, we investigate theoretically and experimentally the generation, topological charge (TC), and orbital [...] Read more.
Compared with the on-axis vortex beam and the off-axis single vortex beam, the off-axis double vortex beam has more control degrees of freedom and brings rich physical properties. In this work, we investigate theoretically and experimentally the generation, topological charge (TC), and orbital angular momentum (OAM) of off-axis double vortex beams. It is demonstrated that the tilted lens method can detect not only the magnitudes and signs of two TCs of the off-axis double vortex beam but also the spatial distribution of the TCs. Moreover, the average OAM value of the off-axis double vortex beam decreases nonlinearly as the off-axis distance increases, although its TC is independent of the off-axis distance of phase singularities. The results indicate that the average OAM of the off-axis double vortex beam can be easily controlled by changing the relative position of two-phase singularities, thereby realizing the applications of multi-degrees of freedom particle manipulation, optical communication, and material processing. Full article
(This article belongs to the Special Issue Advances and Application of Structured Light)
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