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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 5, Iss. 14 — Nov. 16, 2010

Artifact reduction by intrinsic harmonics of tuning fork probe for scanning near-field optical microscopy

Zhaogang Dong, Ying Zhang, Shaw Wei Kok, Boon Ping Ng, and Yeng Chai Soh  »View Author Affiliations


Optics Express, Vol. 18, Issue 21, pp. 22047-22060 (2010)
http://dx.doi.org/10.1364/OE.18.022047


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Abstract

This paper presents a new method to reduce the topographical artifacts in scanning near-field optical microscopy (SNOM) images. The method uses the harmonics caused intrinsically by the nonlinearity in the oscillation of the SNOM probe even when the probe is working in a normal condition without extra excitation. Using these intrinsic harmonics, the gradient of the received SNOM signal with respect to the probe motion is obtained. Then, taking advantage of a SNOM capable of simultaneously obtaining both the topographical and optical signals, topographical artifacts are calculated from the product of the gradient and the topographical signal, and then removed from the received SNOM signal. The effectiveness of the proposed method is demonstrated experimentally.

© 2010 Optical Society of America

OCIS Codes
(180.5810) Microscopy : Scanning microscopy
(180.4243) Microscopy : Near-field microscopy

ToC Category:
Microscopy

History
Original Manuscript: August 3, 2010
Revised Manuscript: September 26, 2010
Manuscript Accepted: September 26, 2010
Published: October 4, 2010

Virtual Issues
Vol. 5, Iss. 14 Virtual Journal for Biomedical Optics

Citation
Zhaogang Dong, Ying Zhang, Shaw Wei Kok, Boon Ping Ng, and Yeng Chai Soh, "Artifact removal by intrinsic harmonics of tuning fork probe for scanning near-field optical microscopy," Opt. Express 18, 22047-22060 (2010)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=oe-18-21-22047


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