Savchenkov Anatoliy A, Chiow Sheng-Wey, Ghasemkhani Mohammadreza, Williams Skip, Yu Nan, Stirbl Robert C, Matsko Andrey B
Opt Lett. 2019 Sep 1;44(17):4175-4178. doi: 10.1364/OL.44.004175.
In this Letter, we have studied the performance of a gallium nitride 370 nm Fabry-Perot laser diode self-injection locked via a high quality (Q-) factor magnesium fluoride whispering gallery mode (WGM) resonator and show that the state of locking strongly depends on frequency detuning between the internal laser cavity and the resonator modes. Optimizing the detuning, we were able to observe monochromatic laser emission with a sub-100 kHz linewidth. The Q-factor of the resonator measured in this regime exceeded 10.
在本信函中，我们研究了通过高品质（Q 因子）氟化镁回音壁模式（WGM）谐振器实现自注入锁定的氮化镓 370 纳米法布里 - 珀罗激光二极管的性能，并表明锁定状态强烈依赖于内部激光腔与谐振器模式之间的频率失谐。通过优化失谐，我们能够观察到线宽低于 100 kHz 的单色激光发射。在此状态下测量的谐振器 Q 因子超过了 10。
