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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Grover Swartzlander
  • Vol. 30, Iss. 7 — Jul. 1, 2013
  • pp: 1981–1986

Metallic nanowire lasers

Kazuhiro Ikeda and Hitoshi Kawaguchi  »View Author Affiliations


JOSA B, Vol. 30, Issue 7, pp. 1981-1986 (2013)
http://dx.doi.org/10.1364/JOSAB.30.001981


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Abstract

We investigate a nanolaser structure with a gold nanowire that supports long-range surface plasmon polaritons (LR-SPPs). A high refractive index semiconductor gain medium surrounding the nanowire allows the LR-SPPs to be well bound to the nanowire even for a small radius of 15nm with sufficiently small attenuation. An outermost gold shield with a radius of 400 nm is introduced to prohibit the mode from radiating out to free space when the modal cutoff-like feedback structure is used to confine the propagating mode longitudinally. Numerical simulations for an optimized structure show that the quality factor and lasing threshold gain of the resonant mode at room temperature are 158 and 1590cm1, respectively. We also find that the nanolaser supports another type of plasmonic resonant mode with localized surface plasmons on the nanowire with the outermost gold shield, which possesses a quality factor of 220 and a threshold gain of 950cm1. These gain coefficients can be obtained in bulk semiconductors.

© 2013 Optical Society of America

OCIS Codes
(140.5960) Lasers and laser optics : Semiconductor lasers
(250.5403) Optoelectronics : Plasmonics

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: February 27, 2013
Revised Manuscript: May 27, 2013
Manuscript Accepted: May 27, 2013
Published: June 26, 2013

Citation
Kazuhiro Ikeda and Hitoshi Kawaguchi, "Metallic nanowire lasers," J. Opt. Soc. Am. B 30, 1981-1986 (2013)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-30-7-1981

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