IMPULSIVE SOFTENING OF COHERENT PHONONS IN TELLURIUM

被引：122

作者：

HUNSCHE, S ^{[1
]}

WIENECKE, K ^{[1
]}

DEKORSY, T ^{[1
]}

KURZ, H ^{[1
]}

机构：

[1] RHEIN WESTFAL TH AACHEN,INST HALBLEITERTECH 2,D-52056 AACHEN,GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.75.1815

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate thy dynamics of coherent optical phonons in tellurium after high-density excitation with femtosecond laser pulses. The data show a continuous redshift of the phonon frequency with increasing excitation density. Experiments with double-pulse excitation prove that the observed frequency shift is purely electron origin. We demonstrate that coherent phonons allow monitoring the pathway to nonthermal laser-induced melting of crystalline materials.

引用

页码：1815 / 1818

页数：4

共 27 条

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