NEAR-FIELD OPTICAL MEASUREMENT OF THE SURFACE-PLASMON FIELD

被引:67
|
作者
MARTI, O
BIELEFELDT, H
HECHT, B
HERMINGHAUS, S
LEIDERER, P
MLYNEK, J
机构
[1] Fakultät für Physik, Universität Konstanz
关键词
D O I
10.1016/0030-4018(93)90265-7
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The intensity of the evanescent electromagnetic wave of optically excited surface plasmons was measured directly using a scanning tunneling optical microscope (STOM) setup. When resonant coupling of the driving field to the surface plasmons was achieved, the measured intensity was increased by a factor of 30 larger than the corresponding evanescent wave intensity on a bare glass surface, in agreement with the theoretical prediction. Experimental results are presented for three laser wavelengths (514 nm, 633 nm, 670 nm). Possible applications of the technique to study surface plasmon fields are discussed.
引用
收藏
页码:225 / 228
页数:4
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