Advanced Laser Beam Shaping for Micro Material Processing

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 January 2022) | Viewed by 5147

Special Issue Editor


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Guest Editor
Applied Laser and Photonics Group, University of Applied Science Aschaffenburg, Wuerzburger Strasse 45, D-63743 Aschaffenburg, Germany
Interests: applied optics and lasers; Bragg Grating based sensors; laser material processing; additive manufacturing; nanotechnology; applied materials
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Special Issue Information

Dear Colleagues,

Shaping laser beams, e.g., tailoring the spatial transversal intensity distribution by static or dynamic beam shapers, shaping the intensity distribution in propagation direction by axicons or modifying the temporal shape and phase fronts have already been demonstrated to expediently influence the results of laser micro material processing.

However, continuous research is ongoing to address both fundamental and application related topics of this particular photonic approach in material processing.

This Special Issue on “Advanced Laser Beam Shaping for Micro Material Processing” will concentrate on all aspects of fundamental and applied research with a particular focus on laser micro material processing using ultra-short pulsed lasers. Both, original research papers, as well as review papers, are welcome.

Topics of interests include, but are not limited to the following:

  • Methods and tools for beam shaping of lasers such as, but not limited to, spatial or temporal beam shaping
  • Application for laser micro material processing including subtractive and additive processes as well as material modification
  • Static and dynamic beam shaping
  • Beam splitting
  • Novel components and systems for beam shaping
  • Characterization of optical elements and beams
  • Algorithms for simulating and calculating

The objective of this Special Issue is to compile and spotlight both the fundamentals of laser beam shaping technologies and applications, as well as interdisciplinary topical photonic trends of laser micro material processing research.

Prof. Ralf Hellmann
Guest Editor

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Keywords

  • Methods and tools for beam shaping of lasers such as, but not limited to, spatial or temporal beam shaping 
  • Application for laser micro material processing including subtractive and additive processes as well as material modification
  • Static and dynamic beam shaping 
  • Beam splitting 
  • Novel components and systems for beam shaping 
  • Characterization of optical elements and beams
  • Algorithms for simulating and calculating

Published Papers (1 paper)

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Research

9 pages, 7763 KiB  
Article
Compact Beam Homogenizer Module with Laser-Fabricated Lens-Arrays
by Simon Schwarz, Babette Götzendorfer, Stefan Rung, Cemal Esen and Ralf Hellmann
Appl. Sci. 2021, 11(3), 1018; https://doi.org/10.3390/app11031018 - 23 Jan 2021
Cited by 4 | Viewed by 4496
Abstract
We report on manufacturing of a compact beam homogenizer module including two lens arrays and an aperture. Lens arrays are fabricated by an all laser-based technology employing a precise femtosecond pulsed laser ablation and a CO2 laser polishing step. Each lens array [...] Read more.
We report on manufacturing of a compact beam homogenizer module including two lens arrays and an aperture. Lens arrays are fabricated by an all laser-based technology employing a precise femtosecond pulsed laser ablation and a CO2 laser polishing step. Each lens array is processed revealing a high contour accuracy and a roughness of 25 nm. The 8x8 lens arrays are designed to have a square footprint to generate a quadratic Top-Hat beam profile and focal length of 10 mm to realize compact packaging. Firstly, the lens arrays are tested in an experimental setup using commercial lens holders with their functionality being demonstrated by shaping a uniform 4.5 mm squared Top-Hat beam profile, as being calculated. Afterwards, a 3D printer is used to additively manufacture the housing for the beam homogenizer module having a length of only 16 mm. After assembling the laser-fabricated lens arrays and a laser-cutted aperture into the housing, the functionality of the miniaturized module is proven. Full article
(This article belongs to the Special Issue Advanced Laser Beam Shaping for Micro Material Processing)
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