Optically induced damping of the surface plasmon resonance in gold colloids

被引：302

作者：

Perner, M ^{[1
]}

Bost, P ^{[1
]}

Lemmer, U ^{[1
]}

vonPlessen, G ^{[1
]}

Feldmann, J ^{[1
]}

Becker, U ^{[1
]}

Mennig, M ^{[1
]}

Schmitt, M ^{[1
]}

Schmidt, H ^{[1
]}

机构：

[1] INST NEUE MAT,D-66123 SAARBRUCKEN,GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 11期

关键词：

ELECTRON THERMALIZATION; FEMTOSECOND; DYNAMICS; RELAXATION; AG;

D O I：

10.1103/PhysRevLett.78.2192

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The surface plasmon damping induced by high excitation of the electron gas is studied in femtosecond pump-and-probe experiments on gold colloids embedded in a sol-gel matrix. Optical excitation of single-particle interband transitions leads to a pronounced broadening of the surface plasmon line. A similar behavior is observed For resonant excitation of the surface plasmon. This broadening is the dominant optical nonlinearity of the system, and reflects the excitation-induced damping of the surface plasmon resonance. The time evolution of the damping rate follows that of the electronic scattering rate.

引用

页码：2192 / 2195

页数：4

共 18 条

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