Ultralow-power all-optical tunable double plasmon-induced transparencies in nonlinear metamaterials
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- Yu Zhu
- Peking University 1 State Key Laboratory for Mesoscopic Physics and Department of Physics, , Beijing 100871, People's Republic of China
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- Xiaoyong Hu
- Peking University 1 State Key Laboratory for Mesoscopic Physics and Department of Physics, , Beijing 100871, People's Republic of China
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- Hong Yang
- Peking University 1 State Key Laboratory for Mesoscopic Physics and Department of Physics, , Beijing 100871, People's Republic of China
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- Qihuang Gong
- Peking University 1 State Key Laboratory for Mesoscopic Physics and Department of Physics, , Beijing 100871, People's Republic of China
説明
<jats:p>An all-optical tunable double plasmon-induced transparency is realized in a photonic metamaterial coated on the surface of a nanocomposite layer made of polycrystalline indium-tin oxide doped with gold nanoparticles. The local-field effect, quantum confinement effect, and hot-electron injection ensure a large optical nonlinearity for the nanocomposite. A shift of 120 nm in the central wavelength of transparency windows is reached under excitation with a weak pump laser with an intensity of 21 kW/cm2. Compared with previous reports, the threshold pump intensity is reduced by five orders of magnitude, while an ultrafast response time of 34.9 ps is maintained.</jats:p>
収録刊行物
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- Applied Physics Letters
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Applied Physics Letters 104 (21), 2014-05-26
AIP Publishing
