Scanning optical near-field resolution analyzed in terms of communication modes
2006 (English)In: Optics Express, ISSN 1094-4087, Vol. 14, no 23, 11392-11401 p.Article in journal (Refereed) Published
We present an analysis of scanning near-field optical microscopy in terms of the so-called communication modes using scalar wave theory. We show that the number of connected modes increases when the scanning distance is decreased, but the number of modes decreases when the size of the scanning aperture is decreased. In the limit of small detector aperture the best-connected mode reduces effectively to the Green function, evaluated at the center of the scanning aperture. We also suggest that the resolution of a scanning optical near-field imaging system is essentially given by the width of the lowest-order communication mode.
Place, publisher, year, edition, pages
2006. Vol. 14, no 23, 11392-11401 p.
microscope; freedom; limits; waves
Atom and Molecular Physics and Optics
IdentifiersURN: urn:nbn:se:kth:diva-10277DOI: 10.1364/OE.14.011392ISI: 000242325400049ScopusID: 2-s2.0-33751117215OAI: oai:DiVA.org:kth-10277DiVA: diva2:213894
QC 201008022009-04-292009-04-292010-12-06Bibliographically approved