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Evanescent fields—Direct measurement, modeling, and application
Author(s) -
Huntington S.T.,
Ladouceur F.
Publication year - 2007
Publication title -
microscopy research and technique
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.536
H-Index - 118
eISSN - 1097-0029
pISSN - 1059-910X
DOI - 10.1002/jemt.20405
Subject(s) - near field scanning optical microscope , optics , oscillation (cell signaling) , optical microscope , planar , field (mathematics) , materials science , microscopy , waveguide , mode (computer interface) , near and far field , physics , chemistry , scanning electron microscope , computer science , biochemistry , computer graphics (images) , mathematics , pure mathematics , operating system
The evanescent field surrounding an exposed planar waveguide in silica is accurately measured using scanning near field optical microscopy (SNOM) and compared to models of the field distribution. Distortions in the field due to edge effects and the proximity of the mode to the surface are all detected. The characterized field is use to quantitatively explore the difference in collection efficiency between contact mode SNOM and intermittent contact mode SNOM. A strong correlation between tip oscillation amplitude and detection efficiency is determined. Microsc. Res. Tech., 2007. © 2007 Wiley‐Liss, Inc.