Generation Of Ultrashort Acoustic Pulses In Cobalt By Ballistic Electrons In Gold

Oleksandr Kovalenko,Viktor Shalagatskyi,Thomas Pezeril,Vitalyi Gusev,Vasily V. Temnov

2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)（2013）

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摘要

Ballistic hot electrons in fs-laser-excited gold are used to generate ultrashort (2 ps duration) acoustic pulses in cobalt. The exponential dependence of the acoustic amplitude on gold thickness provides the electron mean-free-path of 120 nm.

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关键词

au,cobalt,co,optical pumping,gold,photoexcitation

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