Low-threshold nanolasers based on miniaturized bound states in the continuum

被引：44

作者：

Ren, Yuhao ^{[1
]}

Li, Peishen ^{[2
,3
]}

Liu, Zhuojun ^{[4
,5
]}

Chen, Zihao ^{[2
,3
]}

Chen, You-Ling ^{[6
]}

Peng, Chao ^{[2
,3
,7
]}

Liu, Jin ^{[1
]}

机构：

[1] Sun Yat Sen Univ, Sch Phys, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China

[2] Peking Univ, Sch Elect, State Key Lab Adv Opt Commun Syst & Networks, Beijing 100871, Peoples R China

[3] Peking Univ, Frontiers Sci Ctr Nanooptoelect, Beijing 100871, Peoples R China

[4] Peking Univ, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China

[5] Peking Univ, Sch Phys, Frontiers Sci Ctr Nanooptoelect, Beijing 100871, Peoples R China

[6] Chinese Acad Sci, Inst Semicond, State Key Lab Integrated Optoelectron, Beijing 100083, Peoples R China

[7] Peng Cheng Lab, Shenzhen 518055, Peoples R China

来源：

SCIENCE ADVANCES | 2022年 / 8卷 / 51期

基金：

中国国家自然科学基金;

关键词：

Compendex;

D O I：

10.1126/sciadv.ade8817

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The pursuit of compact lasers with low thresholds has imposed strict requirements on tight light confinements with minimized radiation losses. Bound states in the continuum (BICs) have been recently demonstrated as an effective mechanism to trap light. However, most reported BIC lasers are still bulky due to the absence of in -plane light confinement. Here, we combine BICs and photonic bandgaps to realize three-dimensional light con-finements, as referred to miniaturized BICs (mini-BICs). We demonstrate highly compact active mini-BIC resona-tors with a record high-quality (Q) factor of up to 32,500, which enables single-mode lasing with the lowest threshold of 80 W/cm2 among the reported BIC lasers. In addition, photon statistics measurements further confirm the occurrence of the stimulated emission in our devices. Our work reveals a path toward compact BIC lasers with ultralow power consumption and potentially boosts the applications in cavity quantum electro-dynamics, nonlinear optics, and integrated photonics.

引用

页数：6