DIRECT MEASUREMENT OF STANDING EVANESCENT WAVES WITH A PHOTON-SCANNING TUNNELING MICROSCOPE

被引：53

作者：

MEIXNER, AJ

BOPP, MA

TARRACH, G

机构：

[1] Institute of Physics, University of Basel, Basel

来源：

APPLIED OPTICS | 1994年 / 33卷 / 34期

关键词：

D O I：

10.1364/AO.33.007995

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a detailed analysis of a standing evanescent wave that is caused by total internal reflection of an Ar-ion laser beam on a glass prism and investigate the coupling to a subwavelength dielectric tip of a photon-scanning tunneling microscope that is raster scanned at a close distance over the prism surface. The intensity of the evanescent field is spatially modulated with a period of 239.2 nm. It decays exponentially with a constant of 103.9 nm with increasing distance from the prism surface. Precise measurements of the standing evanescent wave can be used to calibrate the scanner and permit one to determine the spatial resolution and the coupling efficiency of the tip.

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页码：7995 / 8000

页数：6

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