Optical oscillation modes of plasmon particles observed in direct space by phase-contrast near-field microscopy

被引：0
|
作者：
R. Hillenbrand
F. Keilmann
机构：
[1] Max-Planck-Institut für Biochemie,
[2] 82152 Martinsried,undefined
[3] Germany,undefined
来源：
Applied Physics B | 2001年 / 73卷
关键词：
PACS: 07.79.Fc; 68.37.Uv; 73.20.Mf; 78.67.-n;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Light distributions near resonant metal nanoparticles are recorded by a scattering-type scanning near-field optical microscope (s-SNOM), for the first time with a sub-particle-size resolution (<10 nm) and with simultaneous amplitude and phase contrast. The images depict the optical oscillation patterns of single plasmon particles. Examples are presented of particles excited in dominantly dipolar and quadrupolar modes, and also of closely spaced particles sustaining a gap mode. The gap mode can provide enhanced optical fields in nanometric spots for non-linear and single-molecule spectroscopy applications.
引用
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页码：239 / 243
页数：4
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