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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editor: Gregory W. Faris
  • Vol. 1, Iss. 12 — Dec. 18, 2006

Scanning optical near-field resolution analyzed in terms of communication modes

Per Martinsson, Hanna Lajunen, and Ari T. Friberg  »View Author Affiliations

Optics Express, Vol. 14, Issue 23, pp. 11392-11401 (2006)

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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.

© 2006 Optical Society of America

OCIS Codes
(060.4510) Fiber optics and optical communications : Optical communications
(180.5810) Microscopy : Scanning microscopy
(260.1960) Physical optics : Diffraction theory

ToC Category:
Physical Optics

Original Manuscript: June 13, 2006
Revised Manuscript: August 22, 2006
Manuscript Accepted: August 23, 2006
Published: November 13, 2006

Virtual Issues
Vol. 1, Iss. 12 Virtual Journal for Biomedical Optics

Per Martinsson, Hanna Lajunen, and Ari T. Friberg, "Scanning optical near-field resolution analyzed in terms of communication modes," Opt. Express 14, 11392-11401 (2006)

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