High Performance Atomically Thin Flat Lenses
Optics
2016-11-22 v1
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.
Cite
@article{arxiv.1611.06457,
title = {High Performance Atomically Thin Flat Lenses},
author = {Han Lin and Zai-Quan Xu and Chengwei Qiu and Baohua Jia and Qiaoliang Bao},
journal= {arXiv preprint arXiv:1611.06457},
year = {2016}
}