Abstract：
:We demonstrate a new method for a real-time imaging of surface acoustic waves at frequencies up to 1 GHz with picosecond temporal and micron spatial resolutions using an ultrafast optical pump and probe technique combined with a common path interferometer. Using samples with isotropic or anisotropic substrates coated with metallic thin films, we observe the propagation of Rayleigh-like modes and surface-skimming bulk modes as well as resolving surface phonon focusing effects. In addition we image surface acoustic wave propagation in a laterally inhomogeneous sample.
journal_name
Ultrasonicsjournal_title
Ultrasonicsauthors
Sugawara Y,Wright OB,Matsuda O,Gusev VEdoi
10.1016/s0041-624x(02)00090-2subject
Has Abstractpub_date
2002-05-01 00:00:00pages
55-9issue
1-8eissn
0041-624Xissn
1874-9968pii
S0041-624X(02)00090-2journal_volume
40pub_type
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