Open AccessModulating and tuning the response of metamaterials at the unit cell level
Author(s) -
Aloyse Degiron,
Jack J. Mock,
David R. Smith
Publication year - 2007
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.001115
Subject(s) - metamaterial , resonator , split ring resonator , optics , microwave , transformation optics , resonance (particle physics) , physics , filter (signal processing) , optoelectronics , computer science , particle physics , quantum mechanics , computer vision
We perform a series of simulations and experiments at microwave frequencies where we dynamically alter the magnetic resonance of one individual split ring resonator by photodoping a piece of low-doped semiconductor positioned within the gap of the resonator. We predict and experimentally achieve a complete suppression of the resonance amplitude using an 815 nm laser source and then briefly consider the problem of tuning the frequency of an SRR by the same method. We also illustrate the metamaterial approach to active electromagnetic devices by implementing a simple yet efficient optical modulator and a three channel dynamical filter.