Ultra-low-loss on-chip zero-index materials

Tian Dong; Jiujiu Liang; Sarah Camayd-Muñoz; Yueyang Liu; Haoning Tang; Shota Kita; Peipei Chen; Xiaojun Wu; Weiguo Chu; Eric Mazur; Yang Li

doi:10.1038/s41377-020-00436-y

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Ultra-low-loss on-chip zero-index materials

Articles

- Ultra-low-loss on-chip zero-index materials
- Ultra-low-loss on-chip zero-index materials
- LSA 2021年10卷第1期页码：106-114
- Affiliations：
  
  1.State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instrument, Tsinghua University, 100084 Beijing, China
  2.John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
  3.CAS Key Laboratory for Nanophotonic Materials and Devices, Nanofabrication Laboratory, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, 100190 Beijing, China
  4.Department of Electronic and Information Engineering, Beihang University, 100191 Beijing, China
- Author bio：
  
  Weiguo Chu (wgchu@nanoctr.cn)
  Eric Mazur(mazur@seas.harvard.edu)
  Yang Li (yli9003@mail.tsinghua.edu.cn)
- Funds：
- DOI：10.1038/s41377-020-00436-y
  中图分类号：
- 纸质出版日期：2021，
  
  网络出版日期：2021-01-07，
  
  收稿日期：2020-08-05，
  
  修回日期：2020-11-11，
  
  录用日期：2020-11-14
- Accepted：
Scan QR Code
Ultra-low-loss on-chip zero-index materials[J]. LSA, 2021,10(1):106-114.

Dong, T. et al. Ultra-low-loss on-chip zero-index materials. Light: Science & Applications, 10, 106-114 (2021).
Ultra-low-loss on-chip zero-index materials[J]. LSA, 2021,10(1):106-114. DOI： 10.1038/s41377-020-00436-y.

Dong, T. et al. Ultra-low-loss on-chip zero-index materials. Light: Science & Applications, 10, 106-114 (2021). DOI： 10.1038/s41377-020-00436-y.

摘要

Abstract

Light travels in a zero-index medium without accumulating a spatial phase

resulting in perfect spatial coherence. Such coherence brings several potential applications

including arbitrarily shaped waveguides

phase-mismatch-free nonlinear propagation

large-area single-mode lasers

and extended superradiance. A promising platform to achieve these applications is an integrated Dirac-cone material that features an impedance-matched zero index. Although an integrated Dirac-cone material eliminates ohmic losses via its purely dielectric structure

it still entails out-of-plane radiation loss

limiting its applications to a small scale. We design an ultra-low-loss integrated Dirac cone material by achieving destructive interference above and below the material. The material consists of a square array of low-aspect-ratio silicon pillars embedded in silicon dioxide

featuring easy fabrication using a standard planar process. This design paves the way for leveraging the perfect spatial coherence of large-area zero-index materials in linear

nonlinear

and quantum optics.

关键词

Keywords

references

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