@article{Li2024, 
author = {Guihai Li and Ruixiang Liu and Lei Wang and Jianshun Li and Jingchun Li and Xiaoting Yang and Huaibin Shen and Fengjia Fan},
title = {Quantum dot microsphere laser levitated in the air},
year = {2024},
journal = {Nano Research},
volume = {17},
number = {12},
pages = {10525-10528},
keywords = {self-assembly, colloidal quantum dot laser, whispering gallery mode, photophoresis},
url = {https://www.sciopen.com/article/10.1007/s12274-024-6727-x},
doi = {10.1007/s12274-024-6727-x},
abstract = {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 solid-state laser for the first time.}
}