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Enhancement of Optical Nonlinearity by Core-Shell Bimetallic Nanostructures

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Abstract

We propose an alternative way to enhance optical nonlinearity from nanocomposites containing nonlinear bimetallic nanostructures. The optical nonlinearity enhancement are due to two aspects: firstly, the intrinsic large nonlinearity of metallic material in core and shell; secondly, the coupling of dipole modes gives rise to symmetric and antisymmetric resonance, which strengthen the local fields in the core and shell. By fine adjustment of the core-shell size ratio, it is possible to achieve maximal enhancement of optical nonlinearity from bimetallic coated nanocomposites.

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Acknowledgments

This work was supported by the NNSF of China (No. 11374223), the National Basic Research Program (No. 2012CB921501), the Ph.D. Program Foundation of the Ministry of Education of China (No. 20123201110010), the PAPD of Jiangsu Higher Education Institutions, the Natural Science Foundation for the Youth of Jiangsu Province (No. BK20130284), and the Natural Science Foundation for Colleges and Universities in Jiangsu Province of China (No. 15KJB140008).

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Authors and Affiliations

  1. College of Physics, Optoelectronics and Energy of Soochow University, Suzhou, 215006, China

    Pujuan Ma, Dongliang Gao, Yaxian Ni & Lei Gao

  2. Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215006, China

    Pujuan Ma, Dongliang Gao, Yaxian Ni & Lei Gao

  3. Jiangsu Key Laboratory of Thin Films, Soochow University, Suzhou, 215006, China

    Dongliang Gao, Yaxian Ni & Lei Gao

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  1. Pujuan Ma
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  2. Dongliang Gao
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  3. Yaxian Ni
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  4. Lei Gao
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Correspondence to Dongliang Gao or Lei Gao.

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Ma, P., Gao, D., Ni, Y. et al. Enhancement of Optical Nonlinearity by Core-Shell Bimetallic Nanostructures. Plasmonics 11, 183–187 (2016). https://doi.org/10.1007/s11468-015-0036-x

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  • DOI: https://doi.org/10.1007/s11468-015-0036-x

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