Femtosecond laser-induced melting of GaAs probed by optical second-harmonic generation |
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| Authors: | T. Schröder W. Rudolph S. V. Govorkov I. L. Shumay |
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| Affiliation: | (1) Physics Department, Friedrich Schiller University Jena, DDR-6900 Jena, Germany;(2) R. V. Khokhlov Nonlinear Optics Laboratory, Moscow State University, SU-119899 Moscow, USSR |
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| Abstract: | Primary steps of melting (disordering) of GaAs surface layers after femtosecond pulse excitation have been measured through second-harmonic generation in reflection. A numerical fit of the experimental data yield a characteristic time delay between excitation and lattice melting of about 75 fs. |
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| Keywords: | 68.65 07.65 |
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