Open AccessParabolic opening in atomic layer deposited TiO_2 nanobeam operating in visible wavelengths
Author(s) -
Arijit Bera,
Markus Häyrinen,
Markku Kuittinen,
Seppo Honkanen,
Matthieu Roussey
Publication year - 2015
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.23.014973
Subject(s) - atomic layer deposition , photonic crystal , materials science , optics , optoelectronics , wavelength , photonics , band gap , visible spectrum , layer (electronics) , nanotechnology , physics
We investigate the feasibility of developing a one dimensional photonic crystal cavity on a TiO 2 platform operating in the visible. The atomic layer deposition technique is used to finely adjust the parameters of the structure. We present the experimental demonstration of a nanobeam cavity with a quadratically tapered row of holes, in which a parabolic window is opened in order to facilitate the infiltration of gas, liquid, nonlinear material, or quantum emitters. The structure exhibits a photonic band gap between λ = 635 nm and λ = 690 nm and several resonances within the photonic band gap.