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Photonics
Special Issues
Ultrafast Intense Laser Filamentation and Beyond
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Ultrafast Intense Laser Filamentation and Beyond

A special issue of Photonics (ISSN 2304-6732).

Deadline for manuscript submissions: closed (10 November 2023) | Viewed by 3599

Special Issue Editors

Prof. Dr. Stelios Tzortzakis

E-Mail Website
Guest Editor
1. Professor of Physics, Materials Dept., University of Crete, Rethymno, Greece
2. Science Program, Texas A&M University at Qatar, Doha, Qatar
Interests: intense ultrashort laser pulse interaction with matter; nonlinear propagation filamentation; nonlinear THz science; laser materials engineering
Prof. Dr. Olga Kosareva

E-Mail Website
Guest Editor
Physics Faculty, Lomonosov Moscow State University, Moscow 119991, Russia
Interests: theory and numerical simulations of ultrashort pulse propagation and filamentation in transparent media; long-range propagation of terawatt peak power pulses; high numerical aperture focusing; plasma-based THz sources; THz directionality and guiding; beam wandering in turbulence
Prof. Dr. Tie-Jun Wang

E-Mail Website
Guest Editor
Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Interests: fundamentals and applications of ultrashort intense laser filamentation: secondary radiations of UV and THz; supercontinuum; laser-based weather modifications

Special Issue Information

Dear Colleagues,

We would like to draw your attention on a forthcoming special issue of Photonics devoted to the field of filamentation and beyond.

This Special Issue will provide an overview of the present status of this field in order to bring together researchers’ innovative findings and foster future developments.

The issue is open to papers that address the following issues:

  • Theoretical advances on filamentation;
  • Self-focusing and collapse;
  • Filamentation in various media;
  • Supercontinuum generation and pulse compression;
  • Filamentation control;
  • Terahertz science with filaments;
  • Strong field–matter interactions;
  • Filament-based spectroscopy and lasing;
  • Atmospheric applications and weather control;
  • Laser machining and industrial applications with filaments;
  • Ultrashort laser technologies and new high-intensity mid-IR sources, Mid-IR filamentation;
  • Cross-disciplinary

Novel concepts related to these topics and beyond are particularly welcome.

On the basis of your ongoing key contributions to this field, we invite you to submit original papers, which describe exciting results in the above-mentioned areas, to this Special Issue by 1 May 2023.

The issue will be edited by Stelios Tzortzakis, Olga Kosareva and Tie-Jun Wang.

Should you have any questions regarding the preparation of manuscripts or the suitability of your work for this issue, please do not hesitate to contact the Photonics editorial team. We look forward to hearing from you and hope to welcome you as a contributing author.

Best wishes,

Prof. Dr. Stelios Tzortzakis
Prof. Dr. Olga Kosareva
Prof. Dr. Tie-Jun Wang
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

  • laser filamentation
  • nonlinear and multimode propagation
  • plasma-based secondary radiation
  • laser-based weather control
  • filament machining

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Further information on MDPI's Special Issue polices can be found here.

Published Papers (3 papers)

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Research

10 pages, 2954 KiB  
Communication
Polarization-Dependent Formation of Extremely Compressed Femtosecond Wave Packets and Supercontinuum Generation in Fused Silica
by Ilia Geints and Olga Kosareva
Photonics 2024, 11(7), 620; https://doi.org/10.3390/photonics11070620 - 28 Jun 2024
Viewed by 474
Abstract
Previous studies of formation of extremely compressed wave packets during femtosecond filamentation in the region of anomalous group velocity dispersion in solid dielectrics mostly considered the case of linearly polarized laser pulses. However, recent results suggest potential applications of polarization state manipulation for [...] Read more.
Previous studies of formation of extremely compressed wave packets during femtosecond filamentation in the region of anomalous group velocity dispersion in solid dielectrics mostly considered the case of linearly polarized laser pulses. However, recent results suggest potential applications of polarization state manipulation for ultrafast laser writing of optical structures in bulk solid-state media. In the present work, evolution of radiation polarization parameters during formation of such extreme wave packets at the pump wavelength of 1900 nm in fused silica is studied numerically on the basis of the carrier-resolved unidirectional pulse propagation equation (UPPE). It was revealed that initial close-to-circular polarization leads to higher intensity of the anti-Stokes wing in the spectrum of the generated supercontinuum. Numerical simulations indicate a complex, space–time variant polarization state, and the resulting spatiotemporal electric field distribution exhibits a strong dependence on the initial polarization of the femtosecond pulse. At the same time, electric field polarization tends to linear one in the region with the highest field strength regardless of the initial parameters. The origin of this behavior is attributed to the properties of the supercontinuum components generation during filament-induced plasma formation. Full article
(This article belongs to the Special Issue Ultrafast Intense Laser Filamentation and Beyond)
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10 pages, 2871 KiB  
Article
An Experimental Determination of Critical Power for Self-Focusing of Femtosecond Pulses in Air Using Focal-Spot Measurements
by Huiting Song, Zuoqiang Hao, Bingxin Yan, Faqian Liu, Dongwei Li, Junwei Chang, Yangjian Cai and Lanzhi Zhang
Photonics 2024, 11(1), 66; https://doi.org/10.3390/photonics11010066 - 8 Jan 2024
Cited by 1 | Viewed by 1380
Abstract
The filamentation of femtosecond pulses has attracted significant attention, owing to its unique characteristics and related applications. The self-focusing critical power of femtosecond pulses is one of the key parameters in the filamentation process and its application. However, the experimental determination of this [...] Read more.
The filamentation of femtosecond pulses has attracted significant attention, owing to its unique characteristics and related applications. The self-focusing critical power of femtosecond pulses is one of the key parameters in the filamentation process and its application. However, the experimental determination of this power remains a challenging task. In this study, we propose an experimental approach to investigating the critical power for self-focusing of both femtosecond Gaussian and vortex beams with relatively low topological charges by analyzing the changes in the focal spot at different propagation distances. Our work offers a practical and convenient method for determining the self-focusing critical power of femtosecond pulses. Full article
(This article belongs to the Special Issue Ultrafast Intense Laser Filamentation and Beyond)
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14 pages, 2013 KiB  
Article
Diffraction Impact onto Regularized Plasma Channel Formation by Femtosecond Laser Filamentation
by Ekaterina Mitina, Daria Uryupina, Daniil Shipilo, Irina Nikolaeva, Nikolay Panov, Roman Volkov, Olga Kosareva and Andrei Savel’ev
Photonics 2023, 10(8), 928; https://doi.org/10.3390/photonics10080928 - 12 Aug 2023
Cited by 3 | Viewed by 1108
Abstract
Focused femtosecond beam filamentation after amplitude masks has been studied experimentally and numerically. We deduced conditions (energy per hole, diameter and geometrical composition of holes, focal length) providing for the formation of the regularized bundle of filaments or single on-axis filament at the [...] Read more.
Focused femtosecond beam filamentation after amplitude masks has been studied experimentally and numerically. We deduced conditions (energy per hole, diameter and geometrical composition of holes, focal length) providing for the formation of the regularized bundle of filaments or single on-axis filament at the given pulse duration and beam diameter. We showed that a light channel with small diameter (∼200 μm) and overcritical peak power may be formed well before both the focal distance and the Marburger length, and this channel collapses due to self-focusing and forms the filament. The start position of such a filament can be predicted based on the linear propagation equation, while a more sophisticated non-linear approach that takes into account the Kerr nonlinearity, plasma effects, etc., helps to describe the temporal structure of a filament, its frequency, and its angular spectrum. Full article
(This article belongs to the Special Issue Ultrafast Intense Laser Filamentation and Beyond)
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