TITLE:
Propagation and Confinement of Electric Field Waves along One-Dimensional Porous Silicon Hybrid Periodic/Quasiperiodic Structure
AUTHORS:
José Escorcia-García, Miguel Eduardo Mora-Ramos
KEYWORDS:
Optical Properties; Electric Field; Multilayers; Hybrid Structures
JOURNAL NAME:
Optics and Photonics Journal,
Vol.3 No.2A,
June
20,
2013
ABSTRACT: Selective spatial confinement of the electric field
intensity is theoretically obtained for the light propagation along hybrid
structures conformed by periodic and Fibonacci quasiperiodic dielectric
multilayers. Sandwich-like configurations featuring
periodic-quasiperiodic-periodic as well as quasiperiodic-periodic-quasiperiodic
designs exhibit spatial localization of a large percent of the optical
signal within specific zones of the hybrid system. Such a feature might be of
interest in the pursuing of lasing devices based on porous silicon. It is found that the
electric field confinement does not only depend on the quality of the defect or
a particular transmission mode observed in the reflectivity spectra. We show
that it is possible to enhance the electric field confinement solely varying
the angle of incidence. The possibility of realizing finite
photonic crystals with reduced size and very well defined band gap by means of
a quasiperiodic-periodic-quasiperiodic hybrid multilayer is also
revealed.