Straightening of light in a one dimensional dilute photonic crystal

Abstract

Light transport in a dilute photonic crystal is considered. The analytical expression for the transmission coefficient is derived. Straightening of light under certain conditions in a one-dimensional photonic crystal is predicted. Such behavior is caused by the formation of a localized state in transversal motion. The main contribution to the central diffracted wave transmission coefficient is due to states, that either close to the conductance band’s bottom or deeply localized in the forbidden gap. Both these states suppress mobility in the transverse direction and force light to be straightened. Straightening of light in the optical region along with small reflection make these systems very promising for use in solar cells.

Photonic band gap analysis of 1D TiO2/SiO2 photonic crystals using plane wave method for thin film solar cell applications

“…They investigated the straightening light effect in the visible spectral region and observed the highest absorption efficiency in solar cells. It depends of polarization conditions (s and p) and s-polarized light reflected for different incident angles of light [9]. Lu et al theoretically and experimentally investigated an angle dependent omnidirectional PBG using 1DPCs of comprised hyperbolic metamaterials HfO2 and Ag.…”

Extended symmetries in geometrical optics

“…In this particular paper,an we mostly neglect the light polarization, whose interaction with the inhomogeneity of dielectric permittivity leads to many well-known effects, e.g. the optical Hall effect [16][17][18], capsize of polarization and straightening of light in dilute photonic crystals [19,20], etc. We only briefly discuss its influence on the trajectories postponing the detailed consideration for the future study.…”