Evidence for non-mass-transfer mechanism in fs-laser formation of sub-200 nm structures on sapphire

Femtosecond-laser induced generation of sub-200 nm structures in Al 2 O 3 is reported. Comparison of experiment to theory favors periodical fluence variation while excluding self-organized mass transfer as responsible mechanism for structure formation.

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Bibliographic Details
Published in2012 Conference on Lasers and Electro-Optics (CLEO) pp. 1 - 2
Main Authors Das, S. K., Guell, F., Messaoudi, H., Bock, M., Grunwald, R.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.05.2012
Subjects
Equations
Laser theory
Mathematical model
Nanostructures
Periodic structures
Refractive index
Ultrafast optics
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Summary:Femtosecond-laser induced generation of sub-200 nm structures in Al 2 O 3 is reported. Comparison of experiment to theory favors periodical fluence variation while excluding self-organized mass transfer as responsible mechanism for structure formation.
ISBN:1467318396
9781467318396
ISSN:2160-8989
2160-9004
DOI:10.1364/CLEO_SI.2012.CM4K.4