Simultaneous ultraviolet,visible,and near-infrared continuous-wave lasing in a rare-earth-doped microcavity  

作　　者：Bo Jiang Song Zhu Linhao Ren Lei Shi Xinliang Zhang 

机构地区：[1]Huazhong University of Science and Technology,Wuhan National Laboratory for Optoelectronics,Wuhan,China [2]Nanyang Technological University,School of Electrical and Electronic Engineering,Singapore [3]Optics Valley Laboratory,Wuhan,China

出　　处：《Advanced Photonics》2022年第4期38-45,共8页先进光子学（英文）

基　　金：supported by the National Natural Science Foundation of China(91850115,11774110);the Fundamental Research Funds for the Central Universities(HUST:2019kfy XKJC036,2019kfy RCPY092);the State Key Laboratory of Advanced Optical Communication Systems and Networks(2021GZKF003);the State Key Laboratory of Applied Optics(SKLAO2021001A10)。

摘　　要：Microlaser with multiple lasing bands is critical in various applications,such as full-color display,optical communications,and computing.Here,we propose a simple and efficient method for homogeneously doping rare earth elements into a silica whispering-gallery microcavity.By this method,an Er-Yb co-doped silica microsphere cavity with the highest quality(Q)factor(exceeding 108)among the rare-earth-doped microcavities is fabricated to demonstrate simultaneous and stable lasing covering ultraviolet,visible,and near-infrared bands under room temperature and a continuous-wave pump.The thresholds of all the lasing bands are estimated to be at the submilliwatt level,where both the ultraviolet and violet continuous wave upconversion lasing from rare earth elements has not been separately demonstrated under room temperature until this work.This ultrahigh-Q doped microcavity is an excellent platform for highperformance multiband microlasers,ultrahigh-precision sensors,optical memories,and cavity-enhanced light–matter interaction studies.

关 键 词：multiband microlasers whispering-gallery microcavities rare earth elements upconversion 

分 类 号：TN248[电子电信—物理电子学]