Newton's rings in near-field optics

Citation
Ls. Goldner et al., Newton's rings in near-field optics, APPL PHYS L, 78(5), 2001, pp. 583-585
Citations number
11
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
0003-6951 → ACNP
Volume
78
Issue
5
Year of publication
2001
Pages
583 - 585
Database
ISI
SICI code
0003-6951(20010129)78:5<583:NRINO>2.0.ZU;2-4
Abstract
We show how Newton's rings manifest themselves in near-field scanning optic al microscopy and discuss how this effect can be used with topographic imag ing to measure correlated roughness of thin films. In conventional optics, transmission through a thin nonabsorbing film depends on film thickness whe n multiple reflections from the film boundaries are coherent. Measurements and modeling of the transmission through thin films illuminated by a near-f ield probe show that these oscillations are present despite the large distr ibution of transverse wave vectors needed to describe light from the probe. (C) 2001 American Institute of Physics.