Design and characterisation of photonic quasicrystals from microwave to optical regime

Abstract

Photonic band-gap materials are artificially periodic engineered materials with which we can control and manipulate the electromagnetic radiation. The period photonic crystals are well known and have been studied for the last two decades. Recently Photonic structures lacking long-range translational order but with orientational order and higher-order rotational symmetries which are not compatible with the spatial periodicity, called “photonic quasi-crystals”(PQCs) in analogy with solid-state physics, are gaining a growing attention in view of their unique characteristics. This PhD work is devoted to the design and fabrication of photonic quasicrystals working in microwave and optical frequencies.