MECHANISM FOR DISPLACIVE EXCITATION OF COHERENT PHONONS IN SB, BI, TE, AND TI2O3

被引：190

作者：

CHENG, TK

VIDAL, J

ZEIGER, HJ

DRESSELHAUS, G

DRESSELHAUS, MS

IPPEN, EP

机构：

来源：

APPLIED PHYSICS LETTERS | 1991年 / 59卷 / 16期

关键词：

D O I：

10.1063/1.106187

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Coherent phonons in Sb, Bi, Te, and Ti2O3 can be generated impulsively, and detected in the time domain through reflectivity modulation using 60 fs pulses of laser light at 2 eV. Experimental data for these opaque solids suggest that a direct Raman excitation mechanism is not responsible for coherent phonon generation. Rather, the excitation is attributed to an electronically induced displacement of the ion equilibrium coordinates.

引用

页码：1923 / 1925

页数：3

共 17 条

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