High-Power Lasers for Materials Processing, 2nd Edition

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "D:Materials and Processing".

Deadline for manuscript submissions: closed (30 December 2023) | Viewed by 1798

Special Issue Editor


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Guest Editor
Centre National de la Recherche Scientifique (CNRS), Franche-Comté Electronique Mécanique Thermique Optique Sciences et Technologies (FEMTO-ST) Institute, Université de Franche-Comté (UFC), 25000 Besançon, France
Interests: optoelectronic oscillators; optical resonators; instrumentation; Brillouin light scattering
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Special Issue Information

Dear Colleagues,

After the success of the first edition of the Special Issue “High-Power Lasers for Materials Processing”, we are now proposing a second edition.

Power lasers have been developed for a long time, with many lasers being available from many different laser manufacturers. Lasers of high average power have multiple applications for working materials: drilling, sanding, hardening, welding, or cutting, as well as other applications. The principle of laser welding is based on the fusion of a point of the material on which the beam will concentrate thanks to the optical system. After focusing, its illumination can reach more than 1 MW/cm². Lasers can be used for surface treatments. They can also be used to characterize the nature of materials by creating an interaction with the medium, for example, to form phononic waves in the material and thus allow a response from it. Accordingly, this Special Issue seeks to showcase research papers, communications, and review articles that focus on the efforts made to solve problems, cut and treat surfaces, characterize materials using power lasers, or any other application of these lasers.

Dr. Patrice Salzenstein
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.

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Keywords

  • high-power lasers
  • materials processing
  • laser drilling
  • laser sanding
  • laser hardening
  • laser welding
  • laser cutting
  • surface treatments

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Published Papers (1 paper)

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Research

16 pages, 2293 KiB  
Article
Uncertainty Estimation for the Brillouin Frequency Shift Measurement Using a Scanning Tandem Fabry–Pérot Interferometer
by Patrice Salzenstein and Thomas Y. Wu
Micromachines 2023, 14(7), 1429; https://0-doi-org.brum.beds.ac.uk/10.3390/mi14071429 - 15 Jul 2023
Cited by 4 | Viewed by 1528
Abstract
The expanded uncertainty of the measured Brillouin scattering shift frequencies is essential in assessing the measurements of parameters of various materials. We describe the general operation principles of a Brillouin light scattering (BLS) spectrometer with a high-power laser and a scanning tandem Fabry–Pérot [...] Read more.
The expanded uncertainty of the measured Brillouin scattering shift frequencies is essential in assessing the measurements of parameters of various materials. We describe the general operation principles of a Brillouin light scattering (BLS) spectrometer with a high-power laser and a scanning tandem Fabry–Pérot interferometer (TFPI) for material characterization. Various uncertainty components have been analyzed for the BLS spectrometer following the Guide to the Expression of Uncertainty in Measurement (GUM). The expanded relative uncertainty in the measured Brillouin frequency shift of 15.70 GHz for polymethyl methacrylate (PMMA) was estimated to be 0.26%. The calculated Brillouin frequency shift (based on material properties of PMMA) was determined to be 15.44 GHz with expanded relative uncertainty of 2.13%. It was shown that the measured and calculated Brillouin frequency shifts for PMMA agree within their expanded uncertainties. The TFPI-based BLS spectrometer can be used to measure the longitudinal modulus of materials with an expanded uncertainty of 1.9%, which is smaller than that of the ultrasonic velocity-based method (estimated to be 2.9%). Full article
(This article belongs to the Special Issue High-Power Lasers for Materials Processing, 2nd Edition)
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