Resonant and off-resonant light-driven plasmons in metal nanoparticles studied by femtosecond-resolution third-harmonic generation

被引：182

作者：

Lamprecht, B ^{[1
]}

Krenn, JR ^{[1
]}

Leitner, A ^{[1
]}

Aussenegg, FR ^{[1
]}

机构：

[1] Graz Univ, Inst Expt Phys, A-8010 Graz, Austria

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.83.4421

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on a femtosecond-resolution study of the plasmon fields in gold nanoparticles using third-harmonic generation. Controlled resonant and off-resonant plasmon excitation is achieved by tailoring the nanoparticle sample by an electron-beam-lithographic method. Comparing the measured third order interferometric autocorrelation function of the plasmon field with simulations based on a simple harmonic oscillator model we extract the temporal characteristic of the plasmon oscillation. For off-resonant excitation of particle plasmons we find a beating between the driving laser field and the plasmon Field which demonstrates clearly the nature of the plasmon as a collective electron oscillation.

引用

页码：4421 / 4424

页数：4

共 15 条

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