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Spatio-temporal dynamics of femtosecond laser pulses at 1550 nm wavelength in crystal silicon
Date
2018-08-01
Author
Kadan, Viktor
Pavlova, Svitlana
Pavlov, Ihor
Rezaei, Hossein
Ilday, Omer
Blonskyi, Ivan
Metadata
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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Spatio-temporal transformation of the femtosecond laser pulses at 1550 nm wavelength in c-Si is observed using the methods of time-resolved microscopy. The temporal dynamics of the pulse manifests itself both in widening of the frequency spectrum and in the change of on-axis time-width. It is shown, that along with Kerr effect, two-photon absorption also contributes to the temporal reshaping of the laser pulse. Despite the fact that absorption length for green light in c-Si is as small as 1 A mu m, generation of visible third harmonics was also observed in c-Si.
Subject Keywords
General Materials Science
,
General Chemistry
URI
https://hdl.handle.net/11511/57037
Journal
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
DOI
https://doi.org/10.1007/s00339-018-1986-6
Collections
Department of Physics, Article