Compensation of loss in propagating surface plasmon polariton by gain in adjacent dielectric medium.

Center for Materials Research, Norfolk State University, Norfolk, VA 23504, USA.
Optics Express (Impact Factor: 3.53). 02/2008; 16(2):1385-92. DOI: 10.1364/OE.16.001385
Source: PubMed

ABSTRACT We report the suppression of loss of surface plasmon polariton propagating at the interface between silver film and optically pumped polymer with dye. The large magnitude of the effect enables a variety of applications of 'active' nanoplasmonics. The experimental study is accompanied by the analytical description of the phenomenon. In particular, we resolve the controversy regarding the direction of the wavevector of a wave with a strong evanescent component in an active medium.

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