Recent Advances in Laser Beams

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

Deadline for manuscript submissions: closed (29 February 2024) | Viewed by 1194

Special Issue Editor


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Guest Editor
Image Processing Systems Institute of the RAS—Branch of FSRC “Crystallography & Photonics” of the RAS, Molodogvardeyskaya 151, Samara 443001, Russia
Interests: beam forming; metalenses; nanophotonics and near-field diffraction

Special Issue Information

Dear Colleagues,

Research in laser beams has witnessed significant advancements in recent years. Advanced laser systems, such as ultrafast lasers, high-power lasers, and beam-combining techniques, have revolutionized the field. These advancements have led to breakthroughs in areas such as laser material processing, laser spectroscopy, laser medicine, and laser-based imaging. Moreover, developing new beam shaping and manipulation techniques has opened up novel possibilities for tailored laser beam profiles and improved beam quality. The future of laser beam research is promising, with ongoing efforts focused on enhancing beam characteristics, increasing laser power and efficiency, and exploring new applications in emerging fields.

This Special Issue aims to cover a wide range of topics related to laser beams, including laser beam generation, propagation, shaping, manipulation, and their applications in various fields such as materials processing, sensing, imaging, communication, and quantum technologies. All theoretical, numerical, and experimental papers are accepted. Examples of such topics include, but are not limited to, the following:

  • Laser beam generation techniques and optimization;
  • Beam shaping, beam splitting, and manipulation for advanced applications;
  • Optimization of laser beam properties and characteristics;
  • Beam diagnostics and characterization methods;
  • Laser beam communication and data storage;
  • Quantum technologies based on laser beams;
  • Nonlinear optics, parametric amplification, and frequency conversion in laser beams;
  • High-power lasers, beam combining, and advanced beam delivery;
  • Laser beam applications in material processing, diagnostics, and research;
  • Laser-induced plasma and its applications;
  • Metalenses and metasurfaces for beam transformation.

Dr. Anton G. Nalimov
Guest Editor

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

  • laser beams
  • laser technology
  • beam shaping
  • beam profiling
  • ultrafast lasers
  • beam characterization
  • laser diagnostics
  • laser applications
  • semiconductor lasers
  • fiber lasers
  • nanophotonics
  • quantum optics
  • portable laser systems

Published Papers (2 papers)

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Research

11 pages, 5060 KiB  
Article
Flexible Modulation of Perfect Vortex Beams by Combining Coherent Beams
by Bowang Shu, Yuqiu Zhang, Hongxiang Chang, Shiqing Tang, Jinyong Leng, Jiangming Xu and Pu Zhou
Photonics 2024, 11(4), 385; https://doi.org/10.3390/photonics11040385 - 18 Apr 2024
Viewed by 504
Abstract
Perfect vortex beams (PVBs) possess the advantage of a stable light field distribution regardless of their topological charges, and thus they are extensively utilized in various applications, such as free-space optical communication, optical tweezers and laser processing. Herein, we report a new strategy [...] Read more.
Perfect vortex beams (PVBs) possess the advantage of a stable light field distribution regardless of their topological charges, and thus they are extensively utilized in various applications, such as free-space optical communication, optical tweezers and laser processing. Herein, we report a new strategy to generate and modulate PVBs using coherent beam combining (CBC) technology. Both piston phase and tilting phase controlling methods have been successfully employed, and the corresponding properties of the generated PVBs have been fully investigated. Moreover, the number and position of the gaps in fractional perfect vortex beams (FPVBs) could be precisely controlled, and the relationships between these modulated parameters and the performance of FPVBs are uncovered. These simulation analysis results demonstrate the potential for flexible modulation of PVBs or FPVBs in the CBC system, indicating promising prospects for coherent beam arrays (CBAs) in laser beam shaping and achieving high-power structured light. Full article
(This article belongs to the Special Issue Recent Advances in Laser Beams)
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15 pages, 3463 KiB  
Article
Design Considerations for Continuous Wave Intracavity Backwards Optical Parametric Oscillators
by Josh Kneller, Liam Flannigan and Chang-Qing Xu
Photonics 2024, 11(4), 318; https://doi.org/10.3390/photonics11040318 - 29 Mar 2024
Viewed by 502
Abstract
In this paper, we report a theoretical systematic study of continuous wave intracavity backwards optical parametric oscillators based on periodically poled lithium niobate (PPLN) for mid-infrared (mid-IR) light generation. We study the effects of varying different cavity parameters including nonlinear crystal length, cavity [...] Read more.
In this paper, we report a theoretical systematic study of continuous wave intracavity backwards optical parametric oscillators based on periodically poled lithium niobate (PPLN) for mid-infrared (mid-IR) light generation. We study the effects of varying different cavity parameters including nonlinear crystal length, cavity size, pump laser diode spot size, output coupler radius, and cavity loss values on the output power and threshold of the proposed mid-IR laser. The effects of different physical phenomena are included in the model including pump depletion due to the nonlinear conversion process, the thermal lens effect, and mode overlap between the beams in the nonlinear crystal. We show that high output powers in the mid infrared (>500 mW at 3.2 μm) can be achieved with proper cavity design and that a laser threshold with a PPLN as short as 2 cm can be reached. Full article
(This article belongs to the Special Issue Recent Advances in Laser Beams)
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