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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 1 — Jan. 14, 2013
  • pp: 431–442

Spectral broadening effects of spontaneous emission and density of state on plasmonic enhancement in cermet waveguides

Keyong Chen, Xue Feng, Chao Zhang, Kaiyu Cui, and Yidong Huang  »View Author Affiliations


Optics Express, Vol. 21, Issue 1, pp. 431-442 (2013)
http://dx.doi.org/10.1364/OE.21.000431


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Abstract

Based on the full integration formula of Purcell factor (PF) deduced from Fermi’s Golden Rule, the plasmonic enhancement in Au(1-α)Si3N4(α) cermet waveguides is evaluated with the joint impact of finite emission linewidth and the broadening of PF spectrum. The calculation results indicate that the PF would be significantly degraded by the two broadening effects though the SPP resonance frequency can be tuned with different volume fractions (α) of Si3N4. It is also found that the critical emission linewidth is approximately linear to the PF spectrum linewidth. Thus in order to achieve strong plasmonic enhancement, both the emission and PF spectrum linewidths should be dramatically reduced.

© 2013 OSA

OCIS Codes
(130.2790) Integrated optics : Guided waves
(240.6680) Optics at surfaces : Surface plasmons
(310.3915) Thin films : Metallic, opaque, and absorbing coatings

ToC Category:
Optics at Surfaces

History
Original Manuscript: September 24, 2012
Revised Manuscript: November 14, 2012
Manuscript Accepted: December 9, 2012
Published: January 4, 2013

Citation
Keyong Chen, Xue Feng, Chao Zhang, Kaiyu Cui, and Yidong Huang, "Spectral broadening effects of spontaneous emission and density of state on plasmonic enhancement in cermet waveguides," Opt. Express 21, 431-442 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-1-431


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