Femtosecond Laser: Cutting-Edge Research and Application

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 June 2023) | Viewed by 811

Special Issue Editors

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
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 Lasers’.

Femtosecond lasers have been considered as versatile tools for dynamic application areas and have attracted the attention of the research community that works with lasers. The applications of femtosecond lasers cover a wide range of areas, including laser–material interactions, laser interactions 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 in femtosecond laser science. We encourage both theoretical and experimental studies, as well as comprehensive reviews 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 (1 paper)

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Research

15 pages, 8318 KiB  
Article
Gorilla Glass Cutting Using Femtosecond Laser Pulse Filaments
by Md. Shamim Ahsan, Ik-Bu Sohn and Hun-Kook Choi
Appl. Sci. 2024, 14(1), 312; https://doi.org/10.3390/app14010312 - 29 Dec 2023
Viewed by 575
Abstract
Due to high durability, scratch resistance, and impact resistance, Gorilla glasses are a popular choice for protective screens of smartphones, tablets, and laptops. Precise cutting of Gorilla glasses is very important to maintain the overall aesthetics and user experience, which is very challenging. [...] Read more.
Due to high durability, scratch resistance, and impact resistance, Gorilla glasses are a popular choice for protective screens of smartphones, tablets, and laptops. Precise cutting of Gorilla glasses is very important to maintain the overall aesthetics and user experience, which is very challenging. We demonstrated for the first time the cutting of Gorilla glass by means of femtosecond laser filamentation technique. To achieve laser filamentation, a femtosecond laser beam was focused and irradiated in different depths of the sample Gorilla glasses. The filament length varied with the change in the focus position of the laser beam. The effective numerical aperture of the objective lens rises due to the presence of dielectric material (i.e., the Gorilla glass itself) before the focus position of the femtosecond laser beam inside the glass samples. As a consequence, the focal distance of the incident laser beam was prolonged and focused in a very tiny spot with extremely high energy density. Consequently, filaments (i.e., high aspect ratio micro-voids) were evident inside the Gorilla glass samples. The filament length is controllable by changing the irradiation parameters of the laser beam, including magnification and numerical aperture of the lens, laser energy, and thickness of the Gorilla glass before the target focal point. The filament-engraved Gorilla glass samples go through mechanical cleaving process with 400 MPa pressure on both sides of the laser scanning line for smooth cutting of Gorilla glass. The proposed glass cutting technique show promises for commercial application. Full article
(This article belongs to the Special Issue Femtosecond Laser: Cutting-Edge Research and Application)
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