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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 31 — Nov. 1, 2011
  • pp: 5966–5969

All-optical thermo-plasmonic device

Pidishety Shankar and Nirmal K. Viswanathan  »View Author Affiliations


Applied Optics, Vol. 50, Issue 31, pp. 5966-5969 (2011)
http://dx.doi.org/10.1364/AO.50.005966


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Abstract

We demonstrate an all-optical thermo-plasmonic effect to switch/modulate the surface plasmon resonance signal intensity excited at the metal-air interface. This optically addressed thermo-plasmonic measurement scheme is suitable to amplify very small changes in the complex dielectric constant ( ε m ( T ) ) of thin gold (Au) film, induced by the Ar + laser. The predominant contributions due to small but highly repeatable transient photo-thermal effects in the complex metal dielectric constant is confirmed to be the reason behind the highly reproducible all-optical thermo-plasmonic device performance presented here.

© 2011 Optical Society of America

OCIS Codes
(140.6810) Lasers and laser optics : Thermal effects
(240.0240) Optics at surfaces : Optics at surfaces
(240.0310) Optics at surfaces : Thin films
(240.6680) Optics at surfaces : Surface plasmons

ToC Category:
Optics at Surfaces

History
Original Manuscript: May 24, 2011
Revised Manuscript: August 29, 2011
Manuscript Accepted: September 7, 2011
Published: October 26, 2011

Citation
Pidishety Shankar and Nirmal K. Viswanathan, "All-optical thermo-plasmonic device," Appl. Opt. 50, 5966-5969 (2011)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-50-31-5966

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