Yang Zheng , Wenqing Zhu , Liangping Xia , Guohui Chen , Yilin Li , Suihu Dang , Man Zhang , Chunlei Du
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引用次数: 0
Abstract
An achromatic metalens in visible band with a double trapezoid-shaped unit cell structure that consists of arrays of titanium dioxide nanopillars on a flat substrate is proposed. Compared with the traditional achromatic metalenses with rectangular unit cell, this kind of structures provide more choices on phase modulation from differently shaped nanofins, enabling a larger range of phase modulation. Benefit for this, the cell structure is easy to fit for the theoretical phase modulation with different positions and wavelengths in the achromatic metalens with the waveband from 425 to 635 nm. The maximum focal length shift is only 10.2 μm comparing with blue and red light in the experiment.
期刊介绍：
Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review.
The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials.
OPTICAL MATERIALS focuses on:
• Optical Properties of Material Systems;
• The Materials Aspects of Optical Phenomena;
• The Materials Aspects of Devices and Applications.
Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.
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