Near-infrared femtosecond laser machining initiated by ultraviolet multiphoton ionization

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DOIResolve DOI: http://doi.org/10.1063/1.4794946
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TypeArticle
Journal titleApplied Physics Letters
ISSN0003-6951
Volume102
Issue10
Pages101111-1101111-4
AbstractWe report on the experimental study of microstructures fabricated on the surface of fused silica by two femtosecond laser pulses, a tightly focused 266 nm beam followed by a loosely focused 800 nm beam. By setting the fluence of each pulse below the damage threshold, visible microstructures are fabricated using the combined beams. Our results suggest that the ultraviolet pulse generates seed electrons through multiphoton absorption, and the near-infrared pulse utilizes these electrons to cause damage by avalanche ionization.
Publication date
LanguageEnglish
AffiliationSecurity and Disruptive Technologies; National Research Council Canada
Peer reviewedYes
NPARC number21270344
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Record identifiere5b4e4d3-6946-4e16-bb83-16bbe97f7096
Record created2014-01-31
Record modified2016-05-09
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