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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 12 — Jun. 12, 2006
  • pp: 5216–5222

Heating effects in tip-enhanced optical microscopy

Andrew Downes, Donald Salter, and Alistair Elfick  »View Author Affiliations


Optics Express, Vol. 14, Issue 12, pp. 5216-5222 (2006)
http://dx.doi.org/10.1364/OE.14.005216


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Abstract

Finite element simulations of laser-induced heating in scanning probe microscopy are presented. The electromagnetic field is first simulated for a variety of tip and substrate materials, and for air and aqueous environments. This electromagnetic field, in the end of the tip and substrate under the tip, produces Joule heating. Using this Joule heat source, steady state thermal simulations are performed. As a result of the large enhancement of optical power by the tip-substrate cavity, predicted temperature rises can be over 3 orders of magnitude higher than the values predicted without a tip present, but the optical signal can be enhanced by over 10 orders. Gold tips and substrates are predicted to give the highest optical signal for a given temperature increase.

© 2006 Optical Society of America

OCIS Codes
(000.4430) General : Numerical approximation and analysis
(120.6810) Instrumentation, measurement, and metrology : Thermal effects
(240.6490) Optics at surfaces : Spectroscopy, surface
(300.6450) Spectroscopy : Spectroscopy, Raman

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: March 30, 2006
Revised Manuscript: May 12, 2006
Manuscript Accepted: May 12, 2006
Published: June 12, 2006

Virtual Issues
Vol. 1, Iss. 7 Virtual Journal for Biomedical Optics

Citation
Andrew Downes, Donald Salter, and Alistair Elfick, "Heating effects in tip-enhanced optical microscopy," Opt. Express 14, 5216-5222 (2006)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-14-12-5216


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