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Applied Sciences
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Ultra-Short Laser Pulses and its Application in Physics
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Ultra-Short Laser Pulses and its Application in Physics

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Applied Physics General".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 3877

Special Issue Editor

Dr. Sudipta Mondal

E-Mail
Guest Editor
Surface Plasma Attosource Group, ELI-ALPS, 6728 Szeged, Hungary
Interests: high intensity laser-plasma interactions; high-order harmonics generation; intense THz pulse generation; particle-in-cell simulations

Special Issue Information

Dear Colleagues,

Intense ultra-short laser pulses have been the key requirement in research and industry.  Considering their wide range of applications and importance, a special topic is announced in this context.

This special issue would cover topics, broadly ultra-short laser pulse generations and its applications, the interaction of ultra-short pulses with matter, generation of secondary sources as well as their applications.

Generation of intense ultra-short pulse require complex, sophisticated techniques and metrology. Their applications presently covers atomic-molecular physics, plasma physics, material science, and the generation of novel light and particle sources. This special issue mainly aims to gather research articles focused on such topics. Submissions, presenting applications of secondary light and particle sources which are generated using intense ultra-short laser pulses are also welcome.

I welcome you and your coworkers to submit your relevant research works for consideration for this special issue.

Dr. Sudipta Mondal
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. Applied Sciences is an international peer-reviewed open access semimonthly 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.

Published Papers (2 papers)

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Research

8 pages, 9023 KiB  
Article
Adjustment of Subwavelength Rippled Structures on Titanium by Two-Step Fabrication Using Femtosecond Laser Pulses
by Yanping Yuan, Xinyang Guo, Yitong Shang and Jimin Chen
Appl. Sci. 2021, 11(5), 2250; https://doi.org/10.3390/app11052250 - 4 Mar 2021
Viewed by 1738
Abstract
An effective approach is proposed to adjust the surface morphology induced by using a femtosecond laser, including the area and period of rippled structures. The effect of the processing steps and laser polarization on the surface morphology of rippled structures on a titanium [...] Read more.
An effective approach is proposed to adjust the surface morphology induced by using a femtosecond laser, including the area and period of rippled structures. The effect of the processing steps and laser polarization on the surface morphology of rippled structures on a titanium surface was experimentally investigated in this study. A processing sequence was designed for two series of femtosecond laser pulses that irradiate a titanium surface, for example, N = 50(0°) + 50(90°). The experimental results show that the area and period of rippled structures can be simultaneously adjusted by following a two-step method. Due to the enhancement of energy absorption and SP-laser coupling of the initial rippled structures, large area surface structures with small periods are fabricated using two series of femtosecond laser pulses with the same polarization direction. By changing the polarization direction of the two series of femtosecond laser pulses, the recording, erasing, and rewriting of subwavelength ripples is achieved. During the rewriting process, material removal and the formation of new ripples simultaneously occur. Full article
(This article belongs to the Special Issue Ultra-Short Laser Pulses and its Application in Physics)
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16 pages, 3855 KiB  
Article
Optimized Computation of Tight Focusing of Short Pulses Using Mapping to Periodic Space
by Elena Panova, Valentin Volokitin, Evgeny Efimenko, Julien Ferri, Thomas Blackburn, Mattias Marklund, Alexander Muschet, Aitor De Andres Gonzalez, Peter Fischer, Laszlo Veisz, Iosif Meyerov and Arkady Gonoskov
Appl. Sci. 2021, 11(3), 956; https://doi.org/10.3390/app11030956 - 21 Jan 2021
Cited by 5 | Viewed by 1789
Abstract
When a pulsed, few-cycle electromagnetic wave is focused by optics with f-number smaller than two, the frequency components it contains are focused to different regions of space, building up a complex electromagnetic field structure. Accurate numerical computation of this structure is essential [...] Read more.
When a pulsed, few-cycle electromagnetic wave is focused by optics with f-number smaller than two, the frequency components it contains are focused to different regions of space, building up a complex electromagnetic field structure. Accurate numerical computation of this structure is essential for many applications such as the analysis, diagnostics, and control of high-intensity laser-matter interactions. However, straightforward use of finite-difference methods can impose unacceptably high demands on computational resources, owing to the necessity of resolving far-field and near-field zones at sufficiently high resolution to overcome numerical dispersion effects. Here, we present a procedure for fast computation of tight focusing by mapping a spherically curved far-field region to periodic space, where the field can be advanced by a dispersion-free spectral solver. In many cases of interest, the mapping reduces both run time and memory requirements by a factor of order 10, making it possible to carry out simulations on a desktop machine or a single node of a supercomputer. We provide an open-source C++ implementation with Python bindings and demonstrate its use for a desktop machine, where the routine provides the opportunity to use the resolution sufficient for handling the pulses with spectra spanning over several octaves. The described approach can facilitate the stability analysis of theoretical proposals, the studies based on statistical inferences, as well as the overall development and analysis of experiments with tightly-focused short laser pulses. Full article
(This article belongs to the Special Issue Ultra-Short Laser Pulses and its Application in Physics)
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