(Color online) Dynamic surface displacements (going out of plane) for Cu (001) surface (a) and Al (001) surface (b). Both of the snapshots are taken at 4.7 ns after pump beam arrives. The skimming longitudinal waves are marked as L, and the Rayleigh wave is marked as R. The existence of PSAW in the Cu (001) surface can be clearly seen in (a).
(Color online) Setup of our ultrafast pump-probe system for probe beam deflection measurement (polarizing beam splitter, PBS; electro-optical modulator, EOM; beam splitter, BS).
(Color online) Comparison between experimental and calculated surface deflection vs delay time: (a) on the Cu (001) surface 7° from the (100) orientation with 8 μm beam separation; (b) on the same Cu surface and beam separation, 43° from the (100) orientation; (c) on Al (001) surface, along (100) orientation with a beam separation of 8 μm and (d) on the same Al surface 43° from (100) orientation with 9 μm separation.
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