title: Excitações em cristais fotônicos unidimensionais
abstract: In this work, we present a theoretical study of the propagation of electromagnetic\nwaves in multilayer structures called Photonic Crystals. For this purpose, we investigate\nthe phonon-polariton band gaps in periodic and quasi-periodic (Fibonacci-type) multilayers\nmade up of both positive and negative refractive index materials in the terahertz\n(THz) region. The behavior of the polaritonic band gaps as a function of the multilayer\nperiod is investigated systematically. We use a theoretical m
journal: Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT)