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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 34, Iss. 18 — Sep. 15, 2009
  • pp: 2864–2866

Amplification of surface plasmon polaritons in the presence of nonlinearity and spectral signatures of threshold crossover

A. Marini, A. V. Gorbach, D. V. Skryabin, and A. V. Zayats  »View Author Affiliations

Optics Letters, Vol. 34, Issue 18, pp. 2864-2866 (2009)

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We describe the effects of nonlinearity on propagation of surface plasmon polaritons (SPPs) at an interface between a metal and an amplifying medium of the externally pumped two-level atoms. Using Maxwell equations we derive the nonlinear dispersion law and demonstrate that the nonlinear saturation of the linear gain leads to formation of stationary SPP modes with the intensities independent from the propagation distance. Transition to the regime of stationary propagation is similar to the threshold crossover in lasers and leads to narrowing of the SPP spectrum.

© 2009 Optical Society of America

OCIS Codes
(240.4350) Optics at surfaces : Nonlinear optics at surfaces
(240.6680) Optics at surfaces : Surface plasmons

ToC Category:
Optics at Surfaces

Original Manuscript: July 16, 2009
Manuscript Accepted: August 14, 2009
Published: September 15, 2009

A. Marini, A. V. Gorbach, D. V. Skryabin, and A. V. Zayats, "Amplification of surface plasmon polaritons in the presence of nonlinearity and spectral signatures of threshold crossover," Opt. Lett. 34, 2864-2866 (2009)

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