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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 17 — Aug. 13, 2012
  • pp: 19060–19066

Deep subwavelength confinement and giant enhancement of light field by a plasmonic lens integrated with a metal-insulator-metal vertical nanocavity

Song Yue, Zhi Li, Jianjun Chen, and Qihuang Gong  »View Author Affiliations


Optics Express, Vol. 20, Issue 17, pp. 19060-19066 (2012)
http://dx.doi.org/10.1364/OE.20.019060


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Abstract

A metal-insulator-metal vertical nanocavity is proposed to be integrated at the center of a plasmonic lens. Utilizing cavity resonance effect, the light intensity at the center of the integrated plasmonic lens gets enhancement up to 5500 times compared to that without the cavity, and the light field is tightly confined into a spot as small as 6.0 × 10−3λ02. The Purcell factor of the cavity reaches up to 1400, ensuring greatly enhanced light-matter interaction inside the cavity. Moreover, the proposed structure takes advantage of linearly polarized light excitation and easy fabrication.

© 2012 OSA

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(260.5740) Physical optics : Resonance
(140.3945) Lasers and laser optics : Microcavities
(310.6628) Thin films : Subwavelength structures, nanostructures

ToC Category:
Optics at Surfaces

History
Original Manuscript: June 22, 2012
Revised Manuscript: July 19, 2012
Manuscript Accepted: July 20, 2012
Published: August 3, 2012

Citation
Song Yue, Zhi Li, Jianjun Chen, and Qihuang Gong, "Deep subwavelength confinement and giant enhancement of light field by a plasmonic lens integrated with a metal-insulator-metal vertical nanocavity," Opt. Express 20, 19060-19066 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-17-19060


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