Ultrafast zone-center coherent lattice dynamics in ferroelectric lithium tantalate

作者：Hu, Jianbo^*; Misochko, Oleg V.; Takahashi, Hiroshi; Koguchi, Hiroaki; Eda, Takayuki; Nakamura, Kazutaka G.

来源：Science and Technology of Advanced Materials, 2011, 12(3): 034409.

DOI：10.1088/1468-6996/12/3/034409

• lithium tantalate
• ISRS
• coherent phonon

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.

• 出版日期2011-6
• 单位中国工程物理研究院流体物理研究所; 中国工程物理研究院