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Low‐Power and Ultrafast All‐Optical Tunable Nanometer‐Scale Photonic Metamaterials
Author(s) -
Hu Xiaoyong,
Zhang Yingbo,
Fu Yulan,
Yang Hong,
Gong Qihuang
Publication year - 2011
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.201101350
Subject(s) - materials science , photonics , metamaterial , ultrashort pulse , optoelectronics , nanometre , picosecond , dielectric , photonic metamaterial , optics , laser , physics , composite material
A nanometer‐scale all‐optical tunable photonic metamaterial is realized by combining non‐linearity enhancement associated with photonic band resonance and quantum confinement. A positive‐to‐negative switching of the effective dielectric constant is achieved. The operating pump power is reduced by three orders of magnitude, while an ultrafast response time on the order of picoseconds and large tunability are maintained.