Andrianov Alexey V, Anashkina Elena A
Opt Lett. 2022 May 1;47(9):2182-2185. doi: 10.1364/OL.455468.
Miniature lasers based on rare-earth ion-doped tellurite microsphere resonators with whispering gallery modes (WGMs) are promising devices for basic research and applications. However, the excitation of WGMs using an external pump is not a simple task requiring passive or active control. We propose and demonstrate the implementation of thermo-optical control of the L-band laser generation in an Er-doped in-band pumped tellurite glass microsphere using a cheap low-power blue laser diode and a constant-wavelength telecom laser as a pump. The proposed scheme ensures simplification and cost reduction of microlasers.
基于具有回音壁模式（WGMs）的稀土离子掺杂碲酸盐微球谐振器的微型激光器是用于基础研究和应用的有前途的器件。然而，使用外部泵浦激发WGM并非易事，需要进行被动或主动控制。我们提出并演示了在掺铒带内泵浦碲酸盐玻璃微球中，利用廉价的低功率蓝光激光二极管和恒定波长的电信激光器作为泵浦源，对L波段激光产生进行热光控制的实现方法。所提出的方案确保了微激光器的简化和成本降低。
