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Applied Sciences
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Advances in Femtosecond Laser Research
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Advances in Femtosecond Laser Research

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Optics and Lasers".

Deadline for manuscript submissions: closed (20 April 2022) | Viewed by 3638

Special Issue Editors

Prof. Dr. Md. Shamim Ahsan

E-Mail Website
Guest Editor
Electronics and Communication Engineering Discipline, Khulna University, Khulna 9208, Bangladesh
Interests: optical communications; passive optical networks; photonics; photonic sensors
Special Issues, Collections and Topics in MDPI journals
Dr. Farid Ahmed

E-Mail Website
Guest Editor
Department of Manufacturing and Industrial Engineering, The University of Texas Rio Grande Valley, TX 78539, USA
Interests: laser material processing; additive manufacturing; fiber-optic sensing for monitoring applications
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We are inviting submissions to this Special Issue on Advances in Femtosecond Laser.

Femtosecond lasers have been considered as versetile tools for dynamic application areas and attracted the research community working with lasers. The applications of femtosecond lasers cover a wide range of areas including laser–material interactions, laser interaction in liquids, laser micro/nano-machining, laser 3D processing, laser deposition, laser based medical applications, laser microscopy, laser assisted measurements, laser applications in biology and life sciences, and lasers in telecommunications. In addition, understanding the ultrafast phenomena of femtosecond lasers and the development of high power and high pulse repetition rate femtosecond lasers consist of some of the key interests of the scientific community.

This Special Issue confronts the fundamental principles, cutting-edge research investigations, and recent advances of femtosecond laser science. We encourage both theoretical and experimental studies, as well as comprehensive review and survey papers.

Prof. Dr. Ahsan Md. Shamim
Dr. Farid Ahmed
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. 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.

Keywords

  • understanding femtosecond laser phenomena
  • fabrication of high power and high pulse repetition rate femtosecond laser
  • femtosecond laser-material interactions
  • femtosecond laser micro/nano-machining
  • femtosecond laser based 3D processing
  • femtosecond laser based medical and biological applications
  • femtosecond laser assisted microscopy
  • femtosecond laser in telecommunications

Published Papers (2 papers)

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Research

10 pages, 3460 KiB  
Article
Dissociative Ionization and Coulomb Explosion of CHBrCl2 in Intense Near-Infrared Femtosecond Laser Fields
by Botong Liu and Yan Yang
Appl. Sci. 2022, 12(10), 5014; https://doi.org/10.3390/app12105014 - 16 May 2022
Viewed by 1126
Abstract
We experimentally demonstrate the dissociative photoionization of CHBrCl2 molecules in a femtosecond laser field by time-of-flight mass spectrum and dc-slice imaging technology. The results suggest that the low kinetic energy components are from the dissociative ionization process of single-charged molecular ions. The [...] Read more.
We experimentally demonstrate the dissociative photoionization of CHBrCl2 molecules in a femtosecond laser field by time-of-flight mass spectrum and dc-slice imaging technology. The results suggest that the low kinetic energy components are from the dissociative ionization process of single-charged molecular ions. The angular distribution of fragment Cl+ ions can be attributed to the features of dissociative state and molecular configuration, and that of Br+ ions results from the electronic wave-packet evolution and combination of the multi-dissociation processes. The high kinetic energy components are from the Coulomb explosion of multi-charged molecular ions, and the error of the C-Br distance involved in the Coulomb explosion can be explained by the movement of the effective charge center of the polyatomic molecule. Full article
(This article belongs to the Special Issue Advances in Femtosecond Laser Research)
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16 pages, 3993 KiB  
Article
Femtosecond-Laser-Assisted Fabrication of Radiation-Resistant Fiber Bragg Grating Sensors
by Hun-Kook Choi, Young-Jun Jung, Bong-Ahn Yu, Jae-Hee Sung, Ik-Bu Sohn, Jong-Yeol Kim and Md. Shamim Ahsan
Appl. Sci. 2022, 12(2), 886; https://doi.org/10.3390/app12020886 - 16 Jan 2022
Cited by 1 | Viewed by 1970
Abstract
This paper demonstrates the fabrication of radiation-resistant fiber Bragg grating (FBG) sensors using infrared femtosecond laser irradiation. FBG sensors were written inside acrylate-coated fluorine-doped single-mode specialty optical fibers. We detected the Bragg resonance at 1542 nm. By controlling the irradiation conditions, we improved [...] Read more.
This paper demonstrates the fabrication of radiation-resistant fiber Bragg grating (FBG) sensors using infrared femtosecond laser irradiation. FBG sensors were written inside acrylate-coated fluorine-doped single-mode specialty optical fibers. We detected the Bragg resonance at 1542 nm. By controlling the irradiation conditions, we improved the signal strength coming out from the FBG sensors. A significant reduction in the Bragg wavelength shift was detected in the fabricated FBG sensors for a radiation dose up to 105 gray, indicating excellent radiation resistance capabilities. We also characterized the temperature sensitivity of the radiation-resistant FBG sensors and detected outstanding performance. Full article
(This article belongs to the Special Issue Advances in Femtosecond Laser Research)
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