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Modification of Femtosecond Laser Absorption by Electron Beam Irradiation.

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Title: Modification of Femtosecond Laser Absorption by Electron Beam Irradiation.
Authors: Schneider, Nicolai1,2 nicolai.schneider@lpt.uni-erlangen.de, Chechik, Lova1,2, Schmidt, Michael1,2, Cvecek, Kristian1,2
Source: Journal of Laser Micro / Nanoengineering. Nov2025, Vol. 20 Issue 3, p198-203. 6p.
Subjects: Femtosecond lasers, Multiphoton ionization, Glass, Multiphoton absorption, Laser damage, Electron beams, Surface morphology, Dielectric materials
Abstract: Dielectric materials interact with ultra-fast lasers through various nonlinear absorption mechanisms, leading to ionization of the material. Specifically, quasi-free electrons are generated in the conduction band via multiphoton ionization (MPI) or tunneling ionization. When the density of these quasi-free electrons exceeds a critical threshold, ablation of the material occurs. In this work, the influence of extrinsically seeded electrons on the laser ablation threshold and the crater morphology on soda-lime glass for femtosecond laser single-shot experiments is investigated. For this, the laser was focused inside a modified scanning electron microscope, where the soda-lime glass samples were installed. Results show that irradiation with extrinsic electrons, provided by the SEM electron gun, can increase the ablation volume and decrease the ablation threshold. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Laser Micro / Nanoengineering is the property of Japan Laser Processing Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 189923616
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PubTypeId: academicJournal
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  Label: Title
  Group: Ti
  Data: Modification of Femtosecond Laser Absorption by Electron Beam Irradiation.
– Name: Author
  Label: Authors
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  Data: <searchLink fieldCode="AR" term="%22Schneider%2C+Nicolai%22">Schneider, Nicolai</searchLink><relatesTo>1,2</relatesTo><i> nicolai.schneider@lpt.uni-erlangen.de</i><br /><searchLink fieldCode="AR" term="%22Chechik%2C+Lova%22">Chechik, Lova</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Schmidt%2C+Michael%22">Schmidt, Michael</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Cvecek%2C+Kristian%22">Cvecek, Kristian</searchLink><relatesTo>1,2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Laser+Micro+%2F+Nanoengineering%22">Journal of Laser Micro / Nanoengineering</searchLink>. Nov2025, Vol. 20 Issue 3, p198-203. 6p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Femtosecond+lasers%22">Femtosecond lasers</searchLink><br /><searchLink fieldCode="DE" term="%22Multiphoton+ionization%22">Multiphoton ionization</searchLink><br /><searchLink fieldCode="DE" term="%22Glass%22">Glass</searchLink><br /><searchLink fieldCode="DE" term="%22Multiphoton+absorption%22">Multiphoton absorption</searchLink><br /><searchLink fieldCode="DE" term="%22Laser+damage%22">Laser damage</searchLink><br /><searchLink fieldCode="DE" term="%22Electron+beams%22">Electron beams</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+morphology%22">Surface morphology</searchLink><br /><searchLink fieldCode="DE" term="%22Dielectric+materials%22">Dielectric materials</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Dielectric materials interact with ultra-fast lasers through various nonlinear absorption mechanisms, leading to ionization of the material. Specifically, quasi-free electrons are generated in the conduction band via multiphoton ionization (MPI) or tunneling ionization. When the density of these quasi-free electrons exceeds a critical threshold, ablation of the material occurs. In this work, the influence of extrinsically seeded electrons on the laser ablation threshold and the crater morphology on soda-lime glass for femtosecond laser single-shot experiments is investigated. For this, the laser was focused inside a modified scanning electron microscope, where the soda-lime glass samples were installed. Results show that irradiation with extrinsic electrons, provided by the SEM electron gun, can increase the ablation volume and decrease the ablation threshold. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Laser Micro / Nanoengineering is the property of Japan Laser Processing Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.2961/jlmn.2025.03.2004
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 6
        StartPage: 198
    Subjects:
      – SubjectFull: Femtosecond lasers
        Type: general
      – SubjectFull: Multiphoton ionization
        Type: general
      – SubjectFull: Glass
        Type: general
      – SubjectFull: Multiphoton absorption
        Type: general
      – SubjectFull: Laser damage
        Type: general
      – SubjectFull: Electron beams
        Type: general
      – SubjectFull: Surface morphology
        Type: general
      – SubjectFull: Dielectric materials
        Type: general
    Titles:
      – TitleFull: Modification of Femtosecond Laser Absorption by Electron Beam Irradiation.
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            NameFull: Schneider, Nicolai
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            NameFull: Chechik, Lova
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            NameFull: Schmidt, Michael
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            NameFull: Cvecek, Kristian
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            – D: 01
              M: 11
              Text: Nov2025
              Type: published
              Y: 2025
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            – TitleFull: Journal of Laser Micro / Nanoengineering
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