Experimental observation of localized optical excitations in random metal-dielectric films

被引：320

作者：

Grésillon, S ^{[1
]}

Aigouy, L

Boccara, AC

Rivoal, JC

Quelin, X

Desmarest, C

Gadenne, P

Shubin, VA

Sarychev, AK

Shalaev, VM

机构：

[1] CNRS UPR A0005, F-75231 Paris 05, France

[2] Univ Paris 06, ESPCI, Lab Opt Phys, F-75231 Paris, France

[3] Univ Versailles, LMOV, F-78035 Versailles, France

[4] New Mexico State Univ, Dept Phys, Las Cruces, NM 88003 USA

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.82.4520

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Localization of optical excitations within subwavelength areas of a random metal-dielectric film is observed using near-field scanning optical microscopy. This effect is attributed to Anderson localization of surface plasmon modes in a semicontinuous metal film. The localized modes are seen as giant fluctuations of local electric fields spatially concentrated in "hot" spots, where the fields are much greater than the applied held. The local near-field spectra consisting of strong resonance peaks are detected and shown to depend markedly on the sample site probed. The observed spectral peaks correspond to localized modes of random metal-dielectric films. [S0031-9007(99)09244-3].

引用

页码：4520 / 4523

页数：4

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