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Author Yang, Xiaoyu ♦ Yang, Jinghuan ♦ Zhu, Yu ♦ Yang, Hong ♦ Hu, Xiaoyong ♦ Gong, Qihuang
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ BARIUM ♦ CARRIERS ♦ DOPED MATERIALS ♦ FERROELECTRIC MATERIALS ♦ GOLD ♦ LAYERS ♦ NANOPARTICLES ♦ NANOSTRUCTURES ♦ NONLINEAR PROBLEMS ♦ OPACITY ♦ POLYCRYSTALS ♦ RELAXATION ♦ TITANATES ♦ TUNGSTEN SULFIDES ♦ TWO-DIMENSIONAL SYSTEMS
Abstract 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{sup 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.
ISSN 00036951
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-08-24
Publisher Place United States
Journal Applied Physics Letters
Volume Number 107
Issue Number 8


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