Ultra-low threshold continuous-wave quantum dot mini-BIC lasers

Hancheng Zhong; Ying Yu; Ziyang Zheng; Zhengqing Ding; Xuebo Zhao; Jiawei Yang; Yuming Wei; Yingxin Chen; Siyuan Yu

doi:10.1038/s41377-023-01130-5

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Ultra-low threshold continuous-wave quantum dot mini-BIC lasers

Original Articles

- Ultra-low threshold continuous-wave quantum dot mini-BIC lasers
- Light: Science & Applications Vol. 12, Issue 5, Pages: 867-876(2023)
- Affiliations：
  
  1.State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, Sun Yat-Sen University, Guangzhou, 510006, China
  2.School of Physics, Sun Yat-Sen University, Guangzhou, 510275, China
- Author bio：
  
  Ying Yu (yuying26@mail.sysu.edu.cn)
  Siyuan Yu (yusy@mail.sysu.edu.cn)
- Funds：
- DOI：10.1038/s41377-023-01130-5
  CLC：
- Published：31 May 2023，
  
  Published Online：25 April 2023，
  
  Received：28 August 2022，
  
  Revised：2 March 2023，
  
  Accepted：11 March 2023
Scan for full text
Zhong, H. C. et al. Ultra-low threshold continuous-wave quantum dot mini-BIC lasers. Light: Science & Applications, 12, 867-876 (2023).
DOI：

Zhong, H. C. et al. Ultra-low threshold continuous-wave quantum dot mini-BIC lasers. Light: Science & Applications, 12, 867-876 (2023). DOI： 10.1038/s41377-023-01130-5.

摘要

Abstract

Highly compact lasers with ultra-low threshold and single-mode continuous wave (CW) operation have been a long sought-after component for photonic integrated circuits (PICs). Photonic bound states in the continuum (BICs)

due to their excellent ability of trapping light and enhancing light-matter interaction

have been investigated in lasing configurations combining various BIC cavities and optical gain materials. However

the realization of BIC laser with a highly compact size and an ultra-low CW threshold has remained elusive. We demonstrate room temperature CW BIC lasers in the 1310 nm O-band wavelength range

by fabricating a miniaturized BIC cavity in an InAs/GaAs epitaxial quantum dot (QD) gain membrane. By enabling effective trapping of both light and carriers in all three dimensions

ultra-low threshold of 12 μW (0.052 kW cm

−2

) is achieved at room temperature. Single-mode lasing is also realized in cavities as small as only 5 × 5 unit cells (~2.5 × 2.5 μm

cavity size) with a mode volume of 1.16(λ/n)

. The maximum operation temperature reaches 70 ℃ with a characteristic temperature of

~93.9 K. With its advantages in terms of a small footprint

ultra-low power consumption

and adaptability for integration

the mini-BIC lasers offer a perspective light source for future PICs aimed at high-capacity optical communications

sensing and quantum information.

关键词

Keywords

references

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