Abstract

We present a theoretical and experimental investigation into the energy transport in a conjugate matched bilayer consisting of ε-negative (ENG) and μ-negative (MNG) slabs. It is proved that the conjugated matched ENG/MNG bilayer is a subwavelength open-cavity resonator, in which the resonance frequency is determined by the complete tunneling condition, and the Q factor increases exponentially with the slab thickness. It is revealed that the wave is not evanescent inside the bilayer, but it is a hybrid of a traveling wave and a reactive standing wave. It is also manifested during the transient wave propagation that the reactive field energy stored inside the bilayer is provided by the incident wave.

© 2011 Optical Society of America

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