Quantum dot microsphere laser levitated in the air  

作　　者：Guihai Li Ruixiang Liu Lei Wang Jianshun Li Jingchun Li Xiaoting Yang Huaibin Shen Fengjia Fan 

机构地区：[1]CAS Key Laboratory of Microscale Magnetic Resonance and School of Physical Sciences,University of Science and Technology of China,Hefei 230026,China [2]Hefei National Laboratory,University of Science and Technology of China,Hefei 230088,China [3]Key Laboratory for Special Functional Materials of Ministry of Education,National&Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology,Henan University,Kaifeng 475004,China

出　　处：《Nano Research》2024年第12期10525-10528,共4页纳米研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.52272167);the Innovation Program for Quantum Science and Technology(No.2021ZD0301603).;carried out at the USTC Center for Micro and Nanoscale Research and Fabrication。

摘　　要：Laser levitated in the air may open new application scenarios,such as quantum information processing,three-dimensional display,and ultra-sensitive gas sensing et al.However,the solid-state levitated laser is yet to be demonstrated.Here,we develop a nebulization method to fabricate colloidal quantum dots self-assembled microspheres,which can be levitated by photophoresis provided by continuous wave lasers and photoexcited by pulsed lasers.These levitated microspheres can serve as high-quality gain media and whispering gallery mode cavities simultaneously,allowing us to demonstrate the levitated solidstate laser for the first time.

关 键 词：colloidal quantum dot laser SELF-ASSEMBLY whispering gallery mode PHOTOPHORESIS 

分 类 号：TN248[电子电信—物理电子学]