| Literature DB >> 27379983 |
Xuhui Xu1,2, Wenfei Zhang1,3, Decheng Yang1, Wei Lu1, Jianbei Qiu2, Siu Fung Yu4.
Abstract
The effective population inversion of 2 H11/2 from 4 S3/2 state of Er3+ ions can be achieved through the annihilation of phonons; random lasing action from BLF films embedded with Yb3+ /Er3+ codoped BLF nanocrystals is demonstrated and high ambient temperature (>433 K) operation lasers with a very low excitation threshold (<530 nJ cm-2 ) are realized.Entities:
Keywords: phonon-assisted population inversion; random cavities; rare-earth doped nanoparticles; self-cooling; upconversion lasing, nanocrystals
Year: 2016 PMID： 27379983 DOI： 10.1002/adma.201601405
Source DB: PubMed Journal: Adv Mater ISSN： 0935-9648 Impact factor: 30.849