Optical control of coherent optical phonons in bismuth films

被引：180
|
作者：
Hase, M
Mizoguchi, K
Harima, H
Nakashima, S
Tani, M
Sakai, K
Hangyo, M
机构：
[1] COMMUN RES LABS,NISHI KU,KOBE 65124,JAPAN
[2] OSAKA UNIV,RES CTR SUPERCOND MAT & ELECT,SUITA,OSAKA 565,JAPAN
来源：
APPLIED PHYSICS LETTERS | 1996年 / 69卷 / 17期
关键词：
D O I：
10.1063/1.117502
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Interference of impulsively excited coherent phonons in semimetals has been studied by using a double-pulse pump-probe technique. Enhancement of the oscillation amplitude of an A(1g) mode is observed when the separation time of the double-pulse is matched to the period of the phonon oscillation, and a cancellation is observed when the separation time is adjusted to half the period of the phonon oscillation. The amplitude after the second pulse shows a sinusoidal dependence as a function of the separation time, and this dependence is explained in terms of a superposition of two coherent phonon oscillations. In addition, not only the A(1g) mode but also an E(g) mode have been observed by electro-optic sampling. (C) 1996 American Institute of Physics.
引用
收藏
页码：2474 / 2476
页数：3
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