Open AccessGeometrically distributed one-dimensional photonic crystals for light-reflection in all angles
Author(s) -
G. Alagappan,
Peixue Wu
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.011550
Subject(s) - optics , photonic crystal , polarization (electrochemistry) , total internal reflection , photonics , electric field , dielectric , physics , reflection (computer programming) , ray , plane of incidence , materials science , optoelectronics , plane wave , chemistry , quantum mechanics , computer science , programming language
We demonstrate that a series of one-dimensional photonic crystals made of any dielectric materials, with the periods are distributed in a geometrical progression of a common ratio, r < rc (theta,P), where rc is a structural parameter that depends on the angle of incidence, theta, and polarization, P, is capable of blocking light of any spectral range. If an omni-directional reflection is desired for all polarizations and for all incident angles smaller than thetao, then r < rc (theta(o),p), where p is the polarization with the electric field parallel to the plane of incidence. We present simple and formula like expressions for rc, width of the bandgap, and minimum number of photonic crystals to achieve a perfect light reflection.