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Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
Published on: September 26, 2014
Light transport through the band-edge states of Fibonacci quasicrystals
Luca Dal Negro1, Claudio J Oton, Zeno Gaburro
1INFM and Department of Physics, University of Trento, I-38050, Povo, Italy. dalnegro@science.unitn.it
Abstract:
The propagation of light in nonperiodic quasicrystals is studied by ultrashort pulse interferometry. Samples consist of multilayer dielectric structures of the Fibonacci type and are realized from porous silicon. We observe mode beating and strong pulse stretching in the light transport through these systems, and a strongly suppressed group velocity for frequencies close to a Fibonacci band gap. A theoretical description based on transfer matrix theory allows us to interpret the results in terms of Fibonacci band-edge resonances.
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