Atomically thin optical lenses and gratings

Jiong Yang; Zhu Wang; Fan Wang; Renjing Xu; Jin Tao; Shuang Zhang; Qinghua Qin; Barry Luther-Davies; Chennupati Jagadish; Zongfu Yu; Yuerui Lu

doi:10.1038/lsa.2016.46

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Atomically thin optical lenses and gratings

Original Articles

- Atomically thin optical lenses and gratings
- Light: Science & Applications Vol. 5, Issue 2, (2016)
- Affiliations：
  
  1.Research School of Engineering, College of Engineering and Computer Science, the Australian National University, Canberra, ACT 2601, Australia
  2.Department of Electrical and Computer Engineering, University of Wisconsin, Madison, WI 53706, USA
  3.Department of Electronic Materials Engineering, Research School of Physics and Engineering, the Australian National University, Canberra, ACT 2601, Australia
  4.CUDOS, Laser Physics Centre, Research School of Physics and Engineering, the Australian National University, Canberra, ACT 2601, Australia
- Author bio：
  
  ZF Yu, Email: zyu54@wisc.edu
  YR Lu, Email: yuerui.lu@anu.edu.au
- Funds：
- DOI：10.1038/lsa.2016.46
  CLC：
- Published：2016-06，
  
  Published Online：18 November 2015，
  
  Received：05 August 2015，
  
  Revised：10 November 2015，
  
  Accepted：17 November 2015
- Accepted：
Scan QR Code
Yang, J. et al. Atomically thin optical lenses and gratings. Light: Science & Applications, 5, e16046 (2016).
DOI：

Yang, J. et al. Atomically thin optical lenses and gratings. Light: Science & Applications, 5, e16046 (2016). DOI： 10.1038/lsa.2016.46.

摘要

Abstract

Two-dimensional (2D) materials have emerged as promising candidates for miniaturized optoelectronic d

evices due to their strong inelastic interactions with light. On the other hand

a miniaturized optical system also requires strong elastic light–matter interactions to control the flow of light. Here we report that a single-layer molybdenum disulfide (MoS

) has a giant optical path length (OPL)

around one order of magnitude larger than that from a single-layer of graphene. Using such giant OPL to engineer the phase front of optical beams we have demonstrated

to the best of our knowledge

the world's thinnest optical lens consisting of a few layers of MoS

less than 6.3 nm thick. By taking advantage of the giant elastic scattering efficiency in ultra-thin high-index 2D materials

we also demonstrated high-efficiency gratings based on a single- or few-layers of MoS

. The capability of manipulating the flow of light in 2D materials opens an exciting avenue towards unprecedented miniaturization of optical components and the integration of advanced optical functionalities. More importantly

the unique and large tunability of the refractive index by electric field in layered MoS

will enable various applications in electrically tunable atomically thin optical components

such as micro-lenses with electrically tunable focal lengths

electrical tunable phase shifters with ultra-high accuracy

which cannot be realized by conventional bulk solids.

关键词

Keywords

atomically thingratingmicro-lensMoS2two-dimensional

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