Open AccessAntireflection coatings for multilayer-type photonic crystals
Author(s) -
Yasuo Ohtera,
Daniel Kurniatan,
Hirohito Yamada
Publication year - 2010
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.012249
Subject(s) - materials science , optics , dielectric , optical coating , substrate (aquarium) , layer (electronics) , photonic crystal , wavelength , optoelectronics , refractive index , reflectivity , anti reflective coating , coating , composite material , oceanography , physics , geology
The possibility of antireflection (AR) coatings on a dielectric multilayer having sub-wavelength deep structural modification is investigated. We numerically surveyed the effect of reflectivity reduction attained by double-layer AR coatings for a wavy multilayer on a patterned substrate. It was clarified that double-layer AR coatings for wavy multilayer is possible with a similar performance level as conventional flat multilayer. Also, it was demonstrated that a pair of AR layers effectively works for a wide range of the horizontal pitch.