Physics – Plasma Physics
Scientific paper
2011-10-03
Journal of Optoelectronics and Advanced Materials Vol. 12, No. 3, p. 610-615, 2010
Physics
Plasma Physics
Scientific paper
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.
Derrien Thibault J. Y.
Itina Tatiana E.
Sarnet Thierry
Sentis Marc
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