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arXiv · 1611.06457

High Performance Atomically Thin Flat Lenses

Han Lin·Zai-Quan Xu·Chengwei Qiu·Baohua Jia·Qiaoliang Bao
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Abstract

We experimentally demonstrate ultrathin flat lenses with a thickness of 7 {\AA}, which corresponds to the fundamental physical limit of the thickness of the material, is fabricated in a large area, monolayer, CVD-prepared tungsten chalcogenides single crystals using the low-cost flexible laser writing method. The lenses apply the ultra-high refractive index to introduce abrupt amplitude modulation of the incident light to achieve three-dimensional (3D) focusing diffraction-limited resolution (0.5{\lambda}) and a focusing efficiency as high as 31%. An analytical physical model based diffraction theory is derived to simulate the focusing process, which shows excellent agreement with the experimental results.

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Han Lin, Zai-Quan Xu, Chengwei Qiu, Baohua Jia, Qiaoliang Bao. 2016-11-20. High Performance Atomically Thin Flat Lenses. https://arxiv.org/abs/1611.06457

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