Zhu Jiangang, Özdemir Sahin Kaya, He Lina, Yang Lan
Department of Electrical and Systems Engineering, Washington University, St. Louis, Missouri 63130, USA.
Opt Express. 2010 Nov 8;18(23):23535-43. doi: 10.1364/OE.18.023535.
We report controlled manipulation of mode splitting in an optical microresonator coupled to two nanoprobes. It is demonstrated that, by controlling the positions of the nanoprobes, the split modes can be tuned simultaneously or individually and experience crossing or anti-crossing in frequency and linewidth. A tunable transition between standing wave mode and travelling wave mode is also observed. Underlying physics is discussed by developing a two-scatterer model which can be extended to multiple sscatterers. Observed rich dynamics and tunability of split modes in a single microresonator will find immediate applications in optical sensing, opto-mechanics, filters and will provide a platform to study strong light-matter interactions in two-mode cavities.
我们报道了在耦合到两个纳米探针的光学微谐振器中对模式分裂的可控操纵。结果表明，通过控制纳米探针的位置，可以同时或单独调节分裂模式，并且这些模式在频率和线宽上会经历交叉或反交叉。还观察到驻波模式和行波模式之间的可调转变。通过建立一个可扩展到多个散射体的双散射体模型来讨论其 underlying physics。在单个微谐振器中观察到的分裂模式丰富的动力学特性和可调性将在光学传感、光机械学、滤波器等方面得到直接应用，并将为研究双模腔中的强光 - 物质相互作用提供一个平台。
