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Birth and decay of coherent optical phonons in femtosecond-laser-excited bismuth

Garl, T.; Gamaly, Eugene G; Boschetto, David; Rode, Andrei V; Luther-Davies, Barry; Rousse, Antoine

Description

The transient reflectivity of bismuth crystal excited by a 45 fs laser pulse in the near-infrared range has been recovered with an accuracy of 10-5, at initial sample temperatures ranging from 50 to 510 K, and at pump fluences from 2 mJ/ cm2 to 21 mJ/ cm2. The coherent phonon excitation and decay processes were imprinted into the time-dependent reflectivity and this allows us to uncover the temporal phonon history preceding the structural transformation of solid Bi. Analysis showed that the...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
URI: http://hdl.handle.net/1885/50759
Source: Physical Review B: Condensed Matter and Materials
DOI: 10.1103/PhysRevB.78.134302

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