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Cars probing of the Si Raman mode transformation during strong picosecond pulsed-laser irradiation

Authors
Journal
Solid State Communications
0038-1098
Publisher
Elsevier
Publication Date
Volume
62
Issue
5
Identifiers
DOI: 10.1016/0038-1098(87)90992-6

Abstract

Abstract We report on picosecond coherent anti-Stokes Raman scattering ( CARS) probing of the Si optical phonon spectrum transformation during picosecond pulsed-laser irradiation. CARS spectra were obtained in reflection at various laser fluences up to melting. The observed spectrum broadening is theoretically explaned in terms of phonon heating and laser-induced mechanical stress build-up on a time scale of 10ps.

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