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Ablation of aluminum with GHz bursts of temporally stitched laser filaments.

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Title: Ablation of aluminum with GHz bursts of temporally stitched laser filaments.
Authors: Kerrigan, Haley1 (AUTHOR), Thome, Owen1 (AUTHOR), Richardson, Martin1 (AUTHOR) mcr@ucf.edu
Source: Journal of Applied Physics. 12/21/2024, Vol. 136 Issue 23, p1-8. 8p.
Subject Terms: *FEMTOSECOND pulses, *VOLUME measurements, *INTERFEROMETRY, *FIBERS, *ALUMINUM
Abstract: Ablation of aluminum by ultra-high repetition rate trains of ultrashort pulses is investigated using bursts of up to 32 150 fs pulses with sub-nanosecond inter-pulse delays generated by a custom titanium:sapphire-based laser architecture. Single-shot interactions of several burst configurations with up to ∼0.4 J of energy are investigated and compared to single femtosecond pulse interactions. White-light interferometry measurements of the ablated volume and images of the single-shot ablation craters are presented. These interactions are conducted in air with the pulses undergoing nonlinear filamentation. The ultrafast pulse trains employed in this investigation utilize repetition rates >1 GHz and uniquely propagate in the nonlinear regime with continuous plasma and precise coaxial overlap between pulses over extended ranges due to the "stitching" of consecutive pulses' filament plasmas, previously described by Reyes et al. [J. Opt. Soc. Am. B Opt. Phys. 36, G52 (2019)]. The large craters generated by a single filament burst provide a promising means for long-range stand-off ablation applications. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. 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.)
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  Data: Ablation of aluminum with GHz bursts of temporally stitched laser filaments.
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  Data: <searchLink fieldCode="AR" term="%22Kerrigan%2C+Haley%22">Kerrigan, Haley</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Thome%2C+Owen%22">Thome, Owen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Richardson%2C+Martin%22">Richardson, Martin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> mcr@ucf.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Applied+Physics%22">Journal of Applied Physics</searchLink>. 12/21/2024, Vol. 136 Issue 23, p1-8. 8p.
– Name: Subject
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  Data: *<searchLink fieldCode="DE" term="%22FEMTOSECOND+pulses%22">FEMTOSECOND pulses</searchLink><br />*<searchLink fieldCode="DE" term="%22VOLUME+measurements%22">VOLUME measurements</searchLink><br />*<searchLink fieldCode="DE" term="%22INTERFEROMETRY%22">INTERFEROMETRY</searchLink><br />*<searchLink fieldCode="DE" term="%22FIBERS%22">FIBERS</searchLink><br />*<searchLink fieldCode="DE" term="%22ALUMINUM%22">ALUMINUM</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Ablation of aluminum by ultra-high repetition rate trains of ultrashort pulses is investigated using bursts of up to 32 150 fs pulses with sub-nanosecond inter-pulse delays generated by a custom titanium:sapphire-based laser architecture. Single-shot interactions of several burst configurations with up to ∼0.4 J of energy are investigated and compared to single femtosecond pulse interactions. White-light interferometry measurements of the ablated volume and images of the single-shot ablation craters are presented. These interactions are conducted in air with the pulses undergoing nonlinear filamentation. The ultrafast pulse trains employed in this investigation utilize repetition rates >1 GHz and uniquely propagate in the nonlinear regime with continuous plasma and precise coaxial overlap between pulses over extended ranges due to the "stitching" of consecutive pulses' filament plasmas, previously described by Reyes et al. [J. Opt. Soc. Am. B Opt. Phys. 36, G52 (2019)]. The large craters generated by a single filament burst provide a promising means for long-range stand-off ablation applications. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. 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: 10.1063/5.0222422
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      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 8
        StartPage: 1
    Subjects:
      – SubjectFull: FEMTOSECOND pulses
        Type: general
      – SubjectFull: VOLUME measurements
        Type: general
      – SubjectFull: INTERFEROMETRY
        Type: general
      – SubjectFull: FIBERS
        Type: general
      – SubjectFull: ALUMINUM
        Type: general
    Titles:
      – TitleFull: Ablation of aluminum with GHz bursts of temporally stitched laser filaments.
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            NameFull: Kerrigan, Haley
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            NameFull: Thome, Owen
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            NameFull: Richardson, Martin
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            – D: 21
              M: 12
              Text: 12/21/2024
              Type: published
              Y: 2024
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              Value: 136
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              Value: 23
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            – TitleFull: Journal of Applied Physics
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