摘要
The optical components of the visible light band are widely used in daily life and industrial development. However due to the serious loss of light and the high cost, the application is limited. The broadband gap metasurface will change this situation due to its low absorption and high efficiency. Herein, we simulate a size-adjustable metasurface of the Al doped ZnO (AZO) nanorod arrays based on finite difference time domain method (FDTD) which can realize the conversion of amplitude polarization and phase in the full visible band. The corresponding theoretical polarization conversion efficiency can reach as high as 91.48% (450 nm), 95.27% (530 nm), and 91.01% (65 nm). The modulation of focusing wavelength can be realized by directly adjusting the height of the AZO nanorod. The designed half-wave plate and metalens can be applied in the imaging power modulation halfwave conversion and enriching the spectroscopy.
作者
Pengdi Wang
Xianghua Zeng
王鹏迪;曾祥华(College of Physics Science and Technology&Institute of Optoelectronic Technology,Yangzhou University,Yangzhou 225002,China;College of Electrical,Energy and Power Engineering,Yangzhou University,Yangzhou 225127,China)
基金
Project supported by the National Key Research and Development Program of China (Grant No. 2017YFB0403101).
