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Photonics
Special Issues
Structured Light Beams: Science and Applications
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Structured Light Beams: Science and Applications

A special issue of Photonics (ISSN 2304-6732). This special issue belongs to the section "Optical Interaction Science".

Deadline for manuscript submissions: 30 April 2024 | Viewed by 4383

Special Issue Editors

Dr. A. Srinivasa Rao

E-Mail Website
Guest Editor
Graduate School of Engineering, Chiba University, Chiba 263-8522, Japan
Interests: laser engineering; laser beam shaping; singular optics; nonlinear optics; beam optics; light–matter interaction; scalar and vector modes; bio-imaging; diffractive optics
Dr. Andra Naresh Kumar Reddy

E-Mail Website
Guest Editor
Laboratory of Nonlinear Optics, University of Latvia, Jelgavas 3, LV-1004 Riga, Latvia
Interests: laser physics; laser beam shaping; micro-optics; light–matter interaction; structured lights; non-diffracting beams; phase-locked lasers; diffractive optical elements; metalenses; OAM beams; computer-generated holography; optical imaging; point spread function; apodization
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In recent decades, structured light beams have garnered tremendous interest owing to their wide range of applications in all branches of science. The modulations in the transverse intensity and phase of structured light beams provide an extra degree of freedom in light applications. However, the spatiotemporal control of light beams offers a full degree of freedom to generate high-dimensional structured light fields. Further, the combination of polarization and structured light beams produces vector beams with a non-uniform polarization distribution. Well-developed computational and experimental techniques can be realized for use in light beam shaping to acquire the desired high-quality structured light beam for any particular application. Some concrete applications with promising benefits are super-resolution fluorescence microscopy, volumetric bio-imaging, particle trapping, secure optical communication, and the creation of micro/nanostructures on material surfaces.

The Photonics Journal, published by MDPI, is welcoming submissions for a Special Issue entitled “Structured Light Beams: Science and Applications”. This Special Issue is focused on the recent developments in various kinds of structured light beams and their potential impact on applications in the multidisciplinary sciences. As part of this Special Issue, we welcome high-quality research reviews, as well as theoretical, computational, and experimental original contributions on structured light field generation, characterization and their possible role in concrete applications. The topics of interest include (but are not limited to) the following:

  • Structured light beam generation using diffractive optical elements;
  • Direct generation of structured light beams from the laser cavity;
  • Application of structured light beams in biological, chemical, and physical sciences;
  • Structured light fields with unconventional propagation characteristics;
  • Peculiarities in the generation of high-order harmonics with structured light beams;
  • Dielectric metalenses for forming and controlling structured light;
  • Non-diffracting light fields in optical communication;
  • Ultrashort optical fields in manufacturing and material processing;
  • Imaging with exotic light fields.

Dr. A Srinivasa Rao
Dr. Andra Naresh Kumar Reddy
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 2400 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

  • structured light beams
  • singular optics
  • nonlinear optics of structured light
  • bio-imaging
  • optical communications
  • structured light-matter interaction
  • laser beam shaping
  • holography
  • incoherent imaging
  • material manipulation with structured light

Published Papers (5 papers)

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Research

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9 pages, 1956 KiB  
Article
Tunable Near and Mid-Infrared (1.3–5 µm) Picosecond Pulsed Optical Vortex Parametric Oscillator
by Mailikeguli Aihemaiti, Dulikun Sulaiman, Dana Jashaner, Yuxia Zhou, Xining Yang, Zhaoxue Li, Bilali Muhutijiang and Taximaiti Yusufu
Photonics 2024, 11(4), 319; https://0-doi-org.brum.beds.ac.uk/10.3390/photonics11040319 - 29 Mar 2024
Viewed by 499
Abstract
In this paper, we present a picosecond pulsed, synchronously pumped optical parametric oscillator producing vortex beam output with tunable wavelengths in the near- to mid-infrared range. The system utilizes a Nd:YVO4 picosecond pulsed solid-state laser emitting at a wavelength of 1.064 µm [...] Read more.
In this paper, we present a picosecond pulsed, synchronously pumped optical parametric oscillator producing vortex beam output with tunable wavelengths in the near- to mid-infrared range. The system utilizes a Nd:YVO4 picosecond pulsed solid-state laser emitting at a wavelength of 1.064 µm to pump a Z-shaped, singly resonant OPO which contains a MgO:PPLN crystal with a fan-shaped grating. The wavelength tuning characteristics of the OPO output are examined both as a function of the MgO:PPLN grating period and crystal temperature. The orbital angular momentum of the pump field can be selectively transferred to either the signal or idler fields by appropriately adjusting the location of the MgO:PPLN crystal within the OPO cavity. The maximum output power of the signal and idler vortex fields are 5.12 W and 3.46 W, respectively, for an incident pump power of 19 W. Full article
(This article belongs to the Special Issue Structured Light Beams: Science and Applications)
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19 pages, 12490 KiB  
Article
Determining Topological Charge of Bessel-Gaussian Beams Using Modified Mach-Zehnder Interferometer
by Mansi Baliyan and Naveen K. Nishchal
Photonics 2024, 11(3), 263; https://0-doi-org.brum.beds.ac.uk/10.3390/photonics11030263 - 14 Mar 2024
Viewed by 672
Abstract
The orbital angular momentum (OAM) associated with structured singular beams carries vital information crucial for studying various properties and applications of light. Determining OAM through the interference of light is an efficient method. The interferogram serves as a valuable tool for analyzing the [...] Read more.
The orbital angular momentum (OAM) associated with structured singular beams carries vital information crucial for studying various properties and applications of light. Determining OAM through the interference of light is an efficient method. The interferogram serves as a valuable tool for analyzing the wavefront of structured beams, especially identifying the order of singularity. In this study, we propose a modified Mach–Zehnder interferometer architecture to effectively determine the topological charge of Bessel–Gaussian (BG) beams. Several numerically generated self-referenced interferograms have been used for analysis. Moreover, this study examines the propagation property and phase distribution within BG beams after they are obstructed by an aperture in the interferometer setup. Full article
(This article belongs to the Special Issue Structured Light Beams: Science and Applications)
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10 pages, 27451 KiB  
Communication
Spin Hall Effect of Two-Index Paraxial Vector Propagation-Invariant Beams
by Victor V. Kotlyar and Alexey A. Kovalev
Photonics 2023, 10(11), 1288; https://doi.org/10.3390/photonics10111288 - 20 Nov 2023
Cited by 1 | Viewed by 746
Abstract
We investigate a simple paraxial vector beam, which is a coaxial superposition of two single-ringed Laguerre–Gaussian (LG) beams, linearly polarized along the horizontal axis, with topological charges (TC) n and −n, and of two LG beams, linearly polarized along the vertical [...] Read more.
We investigate a simple paraxial vector beam, which is a coaxial superposition of two single-ringed Laguerre–Gaussian (LG) beams, linearly polarized along the horizontal axis, with topological charges (TC) n and −n, and of two LG beams, linearly polarized along the vertical axis, with the TCs m and −m. In the initial plane, such a vector beam has zero spin angular momentum (SAM). Upon propagation in free space, such a propagation-invariant beam has still zero SAM at several distances from the waist plane (initial plane). However, we show that at all other distances, the SAM becomes nonzero. The intensity distribution in the cross-section of such a beam has 2m (if m > n) lobes, the maxima of which reside on a circle of a certain radius. The SAM distribution has also several lobes, from 2m till 2(m + n), the centers of which reside on a circle with a radius smaller than that of the maximal-intensity circle. The SAM sign alternates differently: one lobe has a positive SAM, while two neighbor lobes on the circle have a negative SAM, or two neighbor pairs of lobes can have a positive and negative SAM. When passing through a plane with zero SAM, positive and negative SAM lobes are swapped. The maximal SAM value is achieved at a distance smaller than or equal to the Rayleigh distance. Full article
(This article belongs to the Special Issue Structured Light Beams: Science and Applications)
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Review

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27 pages, 6373 KiB  
Review
The Advantages and Disadvantages of Using Structured High-Order but Single Laguerre–Gauss LGp0 Laser Beams
by Kamel Aït-Ameur
Photonics 2024, 11(3), 217; https://0-doi-org.brum.beds.ac.uk/10.3390/photonics11030217 - 27 Feb 2024
Viewed by 687
Abstract
Most laser applications are based on the focusing of a Gaussian laser beam (GLB). When the latter is subject to a phase aberration such as the optical Kerr effect (OKE) or spherical aberration (SA), it is recognised that the focusing performance of the [...] Read more.
Most laser applications are based on the focusing of a Gaussian laser beam (GLB). When the latter is subject to a phase aberration such as the optical Kerr effect (OKE) or spherical aberration (SA), it is recognised that the focusing performance of the GLB is degraded. In this paper, it is demonstrated that high-order radial Laguerre–Gauss LGp0 beams are more resilient than the GLB when subject to the OKE or SA. This opens up opportunities to replace with advantages the usual GLB with a high-order LGp0 beam for some applications. Full article
(This article belongs to the Special Issue Structured Light Beams: Science and Applications)
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21 pages, 56300 KiB  
Review
Optical Imaging Using Coded Aperture Correlation Holography (COACH) with PSF of Spatial-Structured Longitudinal Light Beams—A Study Review
by Joseph Rosen and Vijayakumar Anand
Photonics 2024, 11(2), 115; https://0-doi-org.brum.beds.ac.uk/10.3390/photonics11020115 - 26 Jan 2024
Viewed by 927
Abstract
Spatial-structured longitudinal light beams are optical fields sculpted in three-dimensional (3D) space by diffractive optical elements. These beams have been recently suggested for use in improving several imaging capabilities, such as 3D imaging, enhancing image resolution, engineering the depth of field, and sectioning [...] Read more.
Spatial-structured longitudinal light beams are optical fields sculpted in three-dimensional (3D) space by diffractive optical elements. These beams have been recently suggested for use in improving several imaging capabilities, such as 3D imaging, enhancing image resolution, engineering the depth of field, and sectioning 3D scenes. All these imaging tasks are performed using coded aperture correlation holography systems. Each system designed for a specific application is characterized by a point spread function of a different spatial-structured longitudinal light beam. This article reviews the topic of applying certain structured light beams for optical imaging. Full article
(This article belongs to the Special Issue Structured Light Beams: Science and Applications)
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: Focal plane intensity structures of tightly focused linear basis hybrid order Poincaré sphere beams
Authors: Sushanta Kumar Pal 1,∗ and Ady Arie 1
Affiliation: 1 School of Electrical Engineering, Fleischman Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel
Abstract: In this article, tight focusing of linear basis hybrid order Poincaré sphere (HyOPS) beams embedded with Stokes vortices of order ±1 and ±2 are studied. The focal plane intensity distributions of these optical fields are found to depend on the helicity, polarity (positive/negative), and the absolute value of the Stokes singularity index of the singular point. In the case of linear basis (X/Y) HyOPS beams, the strengths of the transverse components at the focal plane are found to be different. However, for the linear basis (D/A) HyOPS beams the strengths of the transverse components at the focal plane are found to be the same. For all the linear basis HyOPS beams both the longitudinal and transverse field components are found to be embedded with phase vortices of charge ±1. The present study will be important to understand the fundamental aspects of linear basis HyOPS beams.

Title: Transversal symmetry breaking, angular deviations and lateral displacements of optical Gaussian beams: an analytical review
Authors: Stefano De Leo; Marco Mazzeo
Affiliation: 1. State University of Campinas, Brazil 2. University of Salento, Lecce, Italy

Title: Towards a geometrical representation of elliptical Ince-Gaussian vector beams
Authors: (1) Dayver Daza Salgado, (1) Edgar Medina Segura, (2) Valeria Rodriguez Fajardo, (3) Benjamin Perez-García and (1) Carmelo Rosales Guzman
Affiliation: (1) Centro de Investigaciones en Óptica, A.C., Loma del Bosque 115, Colonia Lomas del Campestre, 37150 León, Gto., México (2) Department of Physics and Astronomy, Colgate University, 13 Oak Drive, Hamilton, NY 13346, United States of America (3) Photonics and Mathematical Optics Group, Tecnologico de Monterrey, Monterrey 64849, Mexico

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