Giant (1%) picosecond strain pulses are generated in a fs-laser-irradiated cobalt transducer sandwiched between a gold layer and sapphire substrate. Ultrafast plasmonic interferometry reveals nonlinear acoustic propagation effects in the (111) gold film.
© 2013 OSA
(240.6680) Optics at surfaces : Surface plasmons
(320.2250) Ultrafast optics : Femtosecond phenomena
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors
V. V. Temnov, C. Klieber, K. A. Nelson, T. Thomay, V. Knittel, A. Leitenstorfer, D. Makarov, M. Albrecht, and R. Bratschitsch, "Nonlinear ultrasonics in gold-cobalt bilayer structures probed with femtosecond surface plasmons," in CLEO: 2013, OSA Technical Digest (online) (Optical Society of America, 2013), paper QM1B.3.
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