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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 5 — Mar. 1, 2014
  • pp: 1157–1160

Highly sensitive mode mapping of whispering-gallery modes by scanning thermocouple-probe microscopy

Angela E. Klein, Carsten Schmidt, Mattes Liebsch, Norik Janunts, Mikhail Dobynde, Andreas Tünnermann, and Thomas Pertsch  »View Author Affiliations


Optics Letters, Vol. 39, Issue 5, pp. 1157-1160 (2014)
http://dx.doi.org/10.1364/OL.39.001157


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Abstract

We propose a method for mapping optical near-fields with the help of a thermocouple scanning-probe microscope tip. As the tip scans the sample surface, its apex is heated by light absorption, generating a thermovoltage. The thermovoltage map represents the intensity distribution of light at the sample surface. The measurement technique has been employed to map optical whispering-gallery modes in fused silica microdisk resonators operating at near-infrared wavelengths. The method could potentially be employed for near-field imaging of a variety of systems in the near-infrared and visible spectral range.

© 2014 Optical Society of America

OCIS Codes
(110.6820) Imaging systems : Thermal imaging
(180.5810) Microscopy : Scanning microscopy
(230.5750) Optical devices : Resonators
(350.3950) Other areas of optics : Micro-optics
(180.4243) Microscopy : Near-field microscopy

ToC Category:
Microscopy

History
Original Manuscript: October 28, 2013
Revised Manuscript: December 18, 2013
Manuscript Accepted: January 18, 2014
Published: February 20, 2014

Citation
Angela E. Klein, Carsten Schmidt, Mattes Liebsch, Norik Janunts, Mikhail Dobynde, Andreas Tünnermann, and Thomas Pertsch, "Highly sensitive mode mapping of whispering-gallery modes by scanning thermocouple-probe microscopy," Opt. Lett. 39, 1157-1160 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-5-1157


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