Decay times of surface plasmon excitation in metal nanoparticles by persistent spectral hole burning

被引：121

作者：

Stietz, F ^{[1
]}

Bosbach, J ^{[1
]}

Wenzel, T ^{[1
]}

Vartanyan, T ^{[1
]}

Goldmann, A ^{[1
]}

Träger, F ^{[1
]}

机构：

[1] Univ Kassel, Fachbereich Phys, D-34132 Kassel, Germany

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.84.5644

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We describe a new technique to determine the: homogeneous linewidths of surface plasmon resonances of metal nanoparticles and thus measure the decay time of this collective electron excitation. The method is based on spectral hole burning and has been applied to supported oblate Ag particles with radii of 7.5 nm. From the experimental results and a theoretical model of hole burning the linewidth of 260 meV corresponding to a decay time of 4.8 fs was extracted. This value is shorter than expected for damping by bulk electron scattering. We conclude that additional damping mechanisms have been observed and reflect confinement of the electrons in nanoparticles with sizes below 10 nm.

引用

页码：5644 / 5647

页数：4

共 19 条

[1] Laser-based method for fabricating monodisperse metallic nanoparticles [J].

Bosbach, J ;

Martin, D ;

Stietz, F ;

Wenzel, T ;

Träger, F .

APPLIED PHYSICS LETTERS, 1999, 74 (18) :2605-2607

[2]

DEVRIES H, 1976, PHYS REV LETT, V36, P91, DOI 10.1103/PhysRevLett.36.91

[3]

EDWARD D, 1995, HDB OPTICAL CONSTANT

[4]

HAGLUND RF, 1993, OPT LETT, V18, P373, DOI 10.1364/OL.18.000373

[5] WIDTH OF CLUSTER PLASMON RESONANCES - BULK DIELECTRIC FUNCTIONS AND CHEMICAL INTERFACE DAMPING [J].

HOVEL, H ;

FRITZ, S ;

HILGER, A ;

KREIBIG, U ;

VOLLMER, M .

PHYSICAL REVIEW B, 1993, 48 (24) :18178-18188

[6] Surface-plasmon resonances in single metallic nanoparticles [J].

Klar, T ;

Perner, M ;

Grosse, S ;

von Plessen, G ;

Spirkl, W ;

Feldmann, J .

PHYSICAL REVIEW LETTERS, 1998, 80 (19) :4249-4252

[7]

KREIBIG U, 1995, SPRINGER SERIES MATH, V25

[8] Resonant and off-resonant light-driven plasmons in metal nanoparticles studied by femtosecond-resolution third-harmonic generation [J].

Lamprecht, B ;

Krenn, JR ;

Leitner, A ;

Aussenegg, FR .

PHYSICAL REVIEW LETTERS, 1999, 83 (21) :4421-4424

[9] Particle-plasmon decay-time determination by measuring the optical near-field's autocorrelation: influence of inhomogeneous line broadening [J].

Lamprecht, B ;

Krenn, JR ;

Leitner, A ;

Aussenegg, FR .

APPLIED PHYSICS B-LASERS AND OPTICS, 1999, 69 (03) :223-227

[10] Persistent spectral hole burning in the few-molecule limit: terrylene in p-terphenyl [J].

Muller, A ;

Richter, W ;

Kador, L .

CHEMICAL PHYSICS LETTERS, 1998, 285 (1-2) :92-98

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