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Advancements in Laser Machining and Optical Materials

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Optical and Photonic Materials".

Deadline for manuscript submissions: closed (20 March 2023) | Viewed by 1168

Special Issue Editor


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Guest Editor
Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, China
Interests: laser precision measurement technology; gear detection technology

Special Issue Information

Dear Colleagues,

Ultra-fast (picosecond, femtosecond) laser processing techniques utilize ultrafast laser pulses with high peak power and short pulse widths to modify materials. The femtosecond laser has been widely used in the processing and research of glass, ceramics, crystals, polymers, and other optical materials. It also has an important impact on the development of medicine, biology, material processing, and other fields. The use of ultra-fast laser processing technology to process optical materials has attracted widespread attention in the fields of scientific research and technological processing.

Therefore, we are announcing a Special Issue on “Advancements in Laser Machining and Optical Materials” and invite original contributions to capture the current state of research related to optical material processing and manufacturing technologies. The scope of this Special Issue covers, but is not limited to, understanding, modeling, monitoring, and controling material behaviors during ultrafast laser ablation or refractive index modifications; process condition optimization; surface texturing or functionalization; and developments of sensors and devices using ultrafast lasers, product innovations, and applications.

We are pleased to invite you to submit manuscripts for this Special Issue on “Advancements in Laser Machining and Optical Materials” in the form of full research papers, communications, and review articles. We look forward to receiving your contributions to this Special Issue.

Prof. Dr. Hongfang Chen
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. Materials 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 2600 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

  • ultrafast laser
  • femtosecond
  • picosecond
  • material processing
  • optical materials
  • micromachining
  • sensors

Published Papers (1 paper)

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Research

13 pages, 23690 KiB  
Article
Laser Drilling in Alumina Ceramics Using a Combination of Laser Pulses in the Free-Running and Q-Switched Modes
by Gennady Gavrilov, Andrey Kurkin, Evgeny Rusin and Evgeny Bazhenov
Materials 2023, 16(9), 3457; https://doi.org/10.3390/ma16093457 - 28 Apr 2023
Cited by 3 | Viewed by 928
Abstract
The possibility of using a two-pulse laser action consisting of a pulse of the free-running pulse followed by the Q-switched pulse in the processes of laser drilling in alumina ceramics is considered. A diagram of a laser machine for implementing the proposed processing [...] Read more.
The possibility of using a two-pulse laser action consisting of a pulse of the free-running pulse followed by the Q-switched pulse in the processes of laser drilling in alumina ceramics is considered. A diagram of a laser machine for implementing the proposed processing method and the method for determining the energy required to form the through hole and the drilling time are presented. For thermal exposure, pulsed radiation of Nd:YAG of the laser operating in the free-running mode (pulse duration 0.5 ms, energy up to 0.3 J) was used. The Q-switched pulse was generated using a second Nd:YAG laser (pulse duration 25–30 ns, energy up to 0.03 J). The laser radiation was focused on the surface of the material at one point. The time between the start of generation of the first and second lasers varied in the range of 0–1000 μs. The optimal delay time for the start of the generation of the second laser relative to the first was determined experimentally. The obtained results showed that the combination of the free-running pulse and the Q-switched pulse can significantly increase the efficiency of laser machining of ceramics and improve the hole quality. This scheme turned out to be promising for optimizing parameters of the process of laser drilling in thin-sheet alumina ceramics. The obtained results obtained have great potential in the field of precision laser machining of ceramics. Full article
(This article belongs to the Special Issue Advancements in Laser Machining and Optical Materials)
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