Femtosecond laser-induced nanostructures in fused silica

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DOIResolve DOI: http://doi.org/10.1117/12.629965
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TypeArticle
Proceedings titlePhotonic Applications in Nonlinear Optics, Nanophotonics, and Microwave Photonics
Series titleProceedings of SPIE - The International Society for Optical Engineering; Volume 5971
ConferencePhotonic Applications in Nonlinear Optics, Nanophotonics, and Microwave Photonics, September 12-14, 2005, Toronto, ON, Canada
ISSN0277-786X
Article number59711D
SubjectMemory in glass; Nanoplasmas; Nanoplasmonics; Fiber Bragg gratings; Fused silica; Ionization; Light transmission; Mathematical models; Nanostructured materials; Permittivity; Laser pulses
AbstractSelf-organized nanostructures have been recently observed when femtosecond laser pulses were focused inside fused silica glass. We have shown that these nanostructures extend throughout the focal volume and their order is preserved over macroscopic distances when the focus is scanned. We discuss the present understanding of the formation of the nanostructures including a model based on transient nanoplasmonics. The model predicts the periodicity of nanoplanes to scale as λ/2 in the medium. This is experimentally verified at 800 nm and 400 nm light with which we obtain nanoplane spacing of 250 ± 20 nm and 140 ± 20 nm respectively, which scale as predicted. Another requirement of the model is that ionization occurs preferentially at regions that have previously been ionized. This allows an initially inhomogeneous plasma to develop into an ordered nanoplasma array. Using transmission measurements we show that the required "memory" exists in the case of fused silica.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC)
Peer reviewedYes
NPARC number21276146
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Record identifier03dceb35-282b-4356-ac21-7a04ae52c71b
Record created2015-09-28
Record modified2016-05-09
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