Abstract

The plasmonic structures exhibiting narrowband resonances (NBRs) are of great interest for various applications. We propose to use hysteresis behavior in a 1D system of nonlinear nanoresonators to achieve the NBR; the nonlinearity is provided by the saturation of two-level quantum systems coupled with the nanoresonators (nanolaser/spaser configuration). Quantum dots (QDs) were assumed as quantum systems; their numerical parameters have been adopted for estimations. The role of the loss compensation on the quality of the NBRs is shown for below (under compensation) and above threshold (generating spasers) operation modes. Amplitude and phase detection schemes of the prospective experimental realization are compared using the developed model. Possible sensor oriented applications of the proposed system are discussed.

© 2015 Optical Society of America

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