Journal article
Photosensitive and thermal nonlinear effects in chalcogenide photonic crystal cavities
MW Lee, C Grillet, C Monat, E Mägi, S Tomljenovic-Hanic, X Gai, S Madden, DY Choi, D Bulla, B Luther-Davies, BJ Eggleton
Optics Express | Published : 2010
DOI: 10.1364/OE.18.026695
Abstract
We investigate the photosensitive and thermo-optic nonlinear properties of chalcogenide glass photonic crystal (PhC) cavities at telecommunications wavelengths. We observe a photosensitive refractive index change in AMTIR-1 (Ge33As12Se55) material in the near-infrared, which is enhanced by light localization in the PhC cavity and manifests in a permanent blue-shift of the nanocavity resonance. Thermo-optic non-linear properties are thoroughly investigated by i) carrying out thermal bistable switching experiments, from which we determined thermal switching times of 63μs and 93μs for switch on and switch off respectively and ii) by studying heating of the cavity with a high peak power pulsed l..
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Funding Acknowledgements
This work was produced with the assistance of the Australian Research Council under the ARC Federation Fellowship and Centres of Excellence programs. CUDOS (the Centre for Ultrahigh-bandwidth Devices for Optical Systems) is an ARC Centre of Excellence.