Department of Applied Physics, The Hong Kong Polytechnic University, Kowloon, Hong Kong.
College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, 650093, China.
Adv Mater. 2016 Sep;28(36):8045-8050. doi: 10.1002/adma.201601405. Epub 2016 Jul 5.
The effective population inversion of H from S state of Er ions can be achieved through the annihilation of phonons; random lasing action from BLF films embedded with Yb /Er codoped BLF nanocrystals is demonstrated and high ambient temperature (>433 K) operation lasers with a very low excitation threshold (<530 nJ cm ) are realized.
通过声子的湮没可以实现 Er 离子从 H 到 S 态的有效粒子数反转；证明了嵌入 Yb/Er 共掺 BLF 纳米晶的 BLF 薄膜具有随机激光作用，实现了具有非常低的激发阈值（<530 nJ cm ）的高环境温度（>433 K）工作激光器。
