Optical whispering gallery mode resonators are important platforms to enhance and study various nonlinear frequency conversion processes. Stimulated Brillouin scattering is one of the strongest nonlinear effects, and can be successfully investigated using these platforms. In this article, we study the phenomenon of stimulated Brillouin scattering using a crystalline disk resonator. A fast scanning ringdown spectroscopy technique is used to characterize the optical modes featuring quality factors of the order of one billion at telecom wavelengths. The mW scale threshold power in a centimeter disk resonator is observed and found to be strongly dependent on the gap between the resonator and the prism coupler.

耳语回音模式谐振器是增强和研究各种非线性频率转换过程的重要平台。受激布里渊散射是最强的非线性效应之一，可以使用这些平台成功进行研究。在本文中，我们研究了使用晶体盘谐振器激发布里渊散射的现象。快速扫描振铃光谱技术用于表征在电信波长处具有十亿数量级质量因数的光学模式。观察到厘米圆盘谐振器中的mW标度阈值功率，并发现该功率在很大程度上取决于谐振器与棱镜耦合器之间的间隙。