Ultrafast zone-center coherent lattice dynamics in ferroelectric lithium tantalate.
نویسندگان
چکیده
Femtosecond time-resolved pump-probe experiments were carried out to study ultrafast lattice dynamics of ferroelectric lithium tantalate. Both the fully symmetric (A1 mode) and doubly degenerate (E mode) coherent phonons at the center of the Brillouin zone were excited via impulsive stimulated Raman scattering, as confirmed by the excitation intensity dependence.
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ورودعنوان ژورنال:
- Science and technology of advanced materials
دوره 12 3 شماره
صفحات -
تاریخ انتشار 2011