Experimentally, strong localization of electromagnetic waves in three dimensions has never been achieved, despite extensive studies. Moving away from the paradigm of disordered systems, we perform microwave transport experiments in planar aperiodic Vogel spiral arrays of cylinders with high dielectric permittivity. By characterizing the electromagnetic modal structure in real space, we observe combinations of long-lived modes with Gaussian, exponential, and power law spatial decay. This distinctive modal structure, not present in conventional photonic materials with periodic or disordered structures, is the cause of significant electromagnetic wave localization that persists even in a three-dimensional environment.
We have investigated light propagation and Anderson localization in one-dimensional dispersive random metamaterials,
focusing on the effects disorder correlation. We analyze and compare the cases where disorder is
uncorrelated, totally correlated and anticorrelated. We show that the photonic gaps of the corresponding periodic
structure are not completely destroyed by the presence of disorder, which leads to minima in the localization
length. We demonstrate that, in the vicinities of a gap of the corresponding periodic structure, the behavior of
the localization length depends crucially on the physical origin of the gap (Bragg or non-Bragg gaps).
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.