Here we report the use of a photo-acoustic technique, picosecond transient grating, to measure the propagation of surface acoustic waves in a 1D phononic crystal. The experimental data enables the complete characterization of the band diagram overcoming the band edge wave vector. The band folding and gap phenomena are evident from the results.
PHOTO-ACOUSTIC EXPERIMENTS in HYPERSONIC PHONONIC CRYSTALS / Malfanti, I; Bartolini, P; Taschin, A; Torre, R.. - STAMPA. - (2010), pp. 1-2. (Intervento presentato al convegno 12° Convegno Nazionale delle Tecnologie Fotoniche tenutosi a Pisa nel .2010).
PHOTO-ACOUSTIC EXPERIMENTS in HYPERSONIC PHONONIC CRYSTALS
MALFANTI, IACOPO;BARTOLINI, PAOLO;TASCHIN, ANDREA;TORRE, RENATO
2010
Abstract
Here we report the use of a photo-acoustic technique, picosecond transient grating, to measure the propagation of surface acoustic waves in a 1D phononic crystal. The experimental data enables the complete characterization of the band diagram overcoming the band edge wave vector. The band folding and gap phenomena are evident from the results.
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