Ultrafast dynamics of electron thermalization in gold

被引：79

作者：

Guo, CL ^{[1
]}

Rodriguez, G ^{[1
]}

Taylor, AJ ^{[1
]}

机构：

[1] Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.86.1638

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Time-resolved surface second-harmonic generation (SHG is used to probe electron relaxation processes in gold following intense laser excitation at 1.55 eV. For the first time, an electron temperature (T-e) dependent enhancement in the SHG signal is clearly observed at T-e above 0.7 eV, which is shown to relate to the thermalization of nonequilibrium hot electrons. Therefore, the relaxation dynamics of the transient nonequilibrium electrons in the high T-e regime is directly resolved by monitoring the time evolution of the SHG signal.

引用

页码：1638 / 1641

页数：4

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