@article{oai:oist.repo.nii.ac.jp:00001586,
 author = {Yu, Jibo and Wang, Xin and Li, Wenhao and Zhang, Meng and Zhang, Jiquan and Tian, Ke and Du, Yanqiu and Nic Chormaic, Sile and Wang, Pengfei},
 issue = {7},
 journal = {Journal of Lightwave Technology},
 month = {Dec},
 note = {We present our results on an experimental and theoretical investigation into a glass microsphere laser emitting at 2 μm wavelength. First, we fabricated Ho 3+ -doped tellurite glass fiber and measured the absorption and emission spectra, and the fluorescence lifetime. Using this fiber, a tellurite glass microsphere with a Q-factor of 2 × 10 6 was also prepared, and a single-mode laser output with a low threshold of 342 μW was observed using a 1150 nm laser as the pump source. The dynamic characteristics of the microsphere laser were studied theoretically by considering rare-earth ion spectroscopy, the rate equation of the rare-earth energy level, and the light-matter interactions in the microsphere. This work can be used to study laser emissions with low thresholds in rare-earth doped compound glass microresonators for a wide range of applications, such as gas sensing, integrated photonics, and medical surgery.},
 pages = {1880--1886},
 title = {An Experimental and Theoretical Investigation of a 2 μm Wavelength Low-Threshold Microsphere Laser},
 volume = {38},
 year = {2019}
}