Laser & Optoelectronics Progress, Volume. 50, Issue 7, 71602(2013)

Investigation of Optical Transparent Properties of Sub-Wavelength Complex Structure of a Metal Ellipsoid Periodic Array and a Metal Film

Chen Yuanhao*, Liu Guiqiang, Huang Kuan, Hu Ying, Zhang Xiangnan, and Cai Zhengjie
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    A novel sub-wavelength transparent metal structure consisting of with a layer of gold ellipsoid nanoparticles arranged into the hexagonal lattice on the surface of a gold film is proposed. The transmission characteristics of the structure are investigated by using the finite-difference time-domain (FDTD) method. Simulation results show that the structure presents pronounced optical transparent behaviors. With the increase of the ellipsoid aspect ratio or the gold film thickness, obvious blue shift of the narrow resonant peak appears, accompanied by the pronounced change in transmittance. The transmission spectrum with much narrower peak is achieved in the proposed structure as compared to that of the structure with a gold nanosphere array on the thin gold film. In addition, we also find that the transmittance of the structure with the gold ellipsoid array on the top surface of the gold film is larger than that with the gold ellipsoid array on the bottom surface of the gold film.

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    Chen Yuanhao, Liu Guiqiang, Huang Kuan, Hu Ying, Zhang Xiangnan, Cai Zhengjie. Investigation of Optical Transparent Properties of Sub-Wavelength Complex Structure of a Metal Ellipsoid Periodic Array and a Metal Film[J]. Laser & Optoelectronics Progress, 2013, 50(7): 71602

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    Paper Information

    Category: Materials

    Received: Apr. 18, 2013

    Accepted: --

    Published Online: Jul. 1, 2013

    The Author Email: Yuanhao Chen (chenyuanhao1988@gmail.com)

    DOI:10.3788/lop50.071602

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