| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Linear and Nonlinear Optical Properties of Micrometer-Scale Gold Nanoplates |
| LIU Xiao-Lan, PENG Xiao-Niu, YANG Zhong-Jian, LI Min, ZHOU Li**
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Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072
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LIU Xiao-Lan, PENG Xiao-Niu, YANG Zhong-Jian et al 2011 Chin. Phys. Lett. 28 057805 |
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Abstract Micrometer-scale gold nanoplates have been synthesized in high yield through a polyol process. The morphology, crystal structure and linear optical extinction of the gold nanoplates have been characterized. These gold nanoplates are single-crystalline with triangular, truncated triangular and hexagonal shapes, exhibiting strong surface plasmon resonance (SPR) extinction in the visible and near-infrared (NIR) region. The linear optical properties of gold nanoplates are also investigated by theoretical calculations. We further investigate the nonlinear optical properties of the gold nanoplates in solution by Z−scan technique. The nonlinear absorption (NLA) coefficient and nonlinear refraction (NLR) index are measured to be 1.18×102 cm/GW and −1.04×10−3 cm2/GW, respectively.
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| Keywords:
78.67.Bf
73.20.Mf
42.65.-k
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Received: 25 August 2010
Published: 26 April 2011
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| PACS: |
78.67.Bf
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(Nanocrystals, nanoparticles, and nanoclusters)
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73.20.Mf
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(Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))
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42.65.-k
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(Nonlinear optics)
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