期刊
APPLIED PHYSICS LETTERS
卷 107, 期 8, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4929701
关键词
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资金
- 973 Program of China [2013CB328704, 2014CB921003]
- National Natural Science Foundation of China [11225417, 61475003, 11134001, 11121091, 90921008]
An ultrafast and low-power all-optical tunable metamaterial-induced transparency is realized, using polycrystalline barium titanate doped gold nanoparticles and multilayer tungsten disulfide microsheets as nonlinear optical materials. Large nonlinearity enhancement is obtained associated with quantum confinement effect, local-field effect, and reinforced interaction between light and multilayer tungsten disulfide. Low threshold pump intensity of 20 MW/cm(2) is achieved. An ultrafast response time of 85 ps is maintained because of fast carrier relaxation dynamics in nanoscale crystal grains of polycrystalline barium titanate. This may be useful for the study of integrated photonic devices based on two-dimensional materials. (C) 2015 AIP Publishing LLC.
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