Near-field spectroscopy with white-light illumination

被引：21

作者：

Seidel, J ^{[1
]}

Grafström, S ^{[1
]}

Loppacher, C ^{[1
]}

Trogisch, S ^{[1
]}

Schlaphof, F ^{[1
]}

Eng, LM ^{[1
]}

机构：

[1] Dresden Univ Technol, Inst Appl Photophys, D-01062 Dresden, Germany

来源：

APPLIED PHYSICS LETTERS | 2001年 / 79卷 / 14期

关键词：

D O I：

10.1063/1.1407862

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on near-field optical spectroscopy based on the illumination of the sample with white light from a Xe arc lamp through a tapered optical fiber. The light transmitted through the sample is analyzed with a grating spectrometer in the spectral range between 400 and 750 nm. Our setup provides a unique possibility for recording detailed spectroscopic information within a short acquisition time. Near-field spectra acquired on gold clusters measuring 100 nm in diameter and 20 nm in height reveal a wavelength-dependent transmittivity with both reduced and enhanced light intensities probably stemming from surface plasmon excitation. (C) 2001 American Institute of Physics.

引用

页码：2291 / 2293

页数：3

共 17 条

[1] Near-field optical spectroscopy using an incoherent light source [J].