Optical bistability in nonlinear metal-dielectric structures

We report [2, 3] on a bistable wave transmission through a narrow slit perforated on a perfectly conducting metal screen and filled with a Kerr nonlinear dielectric. Approximate analytical expressions are used to calculate both the field intensity inside the narrow slit and the transmission coefficient.

A bistable light transmission through a planar metamaterial composed of a metal pattern of weakly asymmetric elements placed on a nonlinear substrate are manifested [1, 4]. Such structure bears the Fano-like sharp resonance response of a trapped-mode excitation. The feedback required for bistability is provided by the coupling between the strong antiphased trapped-mode-resonance currents excited on the metal elements and the intensity of inner field in the nonlinear substrate.

References

[1] V. Tuz, S. Prosvirnin, L. Kochetova, Optical bistability involving planar metamaterial with a broken structural symmetry, Proc. of Intern. Conf. on Laser & Fiber-Optical Networks Modeling, 12-14 Sept. 2010, Sevastopol, Ukraine, pp. 107-109.

[2] L. Kochetova, S. Prosvirnin, V. Tuz, Bistable wave transmission through a metal screen with a slit filled nonlinear dielectric, Proc. of XV Int. Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED-2010), Sept. 27-30, 2010, Tbilisi, Georgia, pp. 110-113.

[3] L. A. Kochetova, S. L. Prosvirnin, V. R. Tuz, Bistable wave transmission through a metal screen with single slit filled nonlinear dielectric, J. of Electromagn. Waves and Appl., 2010, vol. 24, pp. 2249-2257. [PDF-452K]

[4] V. R. Tuz, S. L. Prosvirnin, and L. A. Kochetova, Optical bistability involving planar metamaterials with broken structural symmetry, Phys. Rev. B, 2010, vol. 82, 233402 (4pp). [PDF-390K]

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