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Photoinduced Local Heating in Silica Photonic Crystals for Fast and Reversible Switching
Author(s) -
GallegoGómez Francisco,
Blanco Alvaro,
López Cefe
Publication year - 2012
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201202828
Subject(s) - materials science , photonic crystal , band gap , photonic bandgap , optoelectronics , irradiation , photonics , silica glass , composite material , physics , nuclear physics
Fast and reversible photonic‐bandgap tunability is achieved in silica artificial opals by local heating . The effect is fully reversible as heat rapidly dissipates through the non‐irradiated structure without active cooling and water is readsorbed. The performance is strongly enhanced by decreasing the photoirradiated opal volume, allowing bandgap shifts of 12 nm and response times of 20 ms.