Application of a two-temperature model for the investigation of the periodic structure formation on Si surface in femtosecond laser interactions

Thibault Derrien 1 Thierry Sarnet 1 Marc Sentis 1 Tatiana Itina 2
1 LP3 - Laboratoire Lasers, Plasmas et Procédés photoniques
2 LHC - Laboratoire Hubert Curien [Saint Etienne]
Abstract : We consider the case of surface irradiation by a small number of femtosecond laser shots leading to the formation of surface ripples. To explain this effect, we propose a numerical model that accounts for the following processes: (i) interference of the laser irradiation with an electromagnetic surface wave propagating on a silicon sample; (ii) free carrier formation and laser energy absorption; (iii) energy relaxation and electron-phonon coupling. We perform numerical calculations taking into account the interference of a surface wave with laser; and present the obtained simulation results in order to explain formation mechanisms of the experimentally observed patterns
Keywords : LIPSS Femtosecond laser Ripple Black silicon
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Journal articles
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https://hal-ujm.archives-ouvertes.fr/ujm-00530631
Contributor : Tatiana Itina <>
Submitted on : Friday, October 29, 2010 - 3:18:38 PM
Last modification on : Wednesday, July 25, 2018 - 2:05:30 PM

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Thibault Derrien, Thierry Sarnet, Marc Sentis, Tatiana Itina. Application of a two-temperature model for the investigation of the periodic structure formation on Si surface in femtosecond laser interactions. Journal of Optoelectronics and Advanced Materials, 2010, 12 (3), pp.610 - 615. ⟨ujm-00530631⟩

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