Bi-material crystalline whispering gallery mode microcavity structure for thermo-opto-mechanical stabilization
Bi-material crystalline whispering gallery mode microcavity structure for thermo-opto-mechanical stabilization
复制标题
DOI：
10.1063/1.4952405
复制
发表时间：
2016-05
期刊：
影响因子：
1.6
通讯作者：
Hiroki Itobe;Yosuke Nakagawa;Yuta Mizumoto;H. Kangawa;Y. Kakinuma;T. Tanabe
中科院分区：
文献类型：
--
作者：
Hiroki Itobe;Yosuke Nakagawa;Yuta Mizumoto;H. Kangawa;Y. Kakinuma;T. Tanabe
采用计算机控制的超精密切割工艺制备了氟化钙回音壁微腔。我们观察到的热光机械（TOM）振荡的CaF2 WGM微腔，这可能会影响光输出的稳定性时，腔用于克尔梳产生。我们研究了实验和数值模拟的机制，TOM振荡，并表明它是强烈依赖于腔直径。此外，我们的数值研究表明，与超高Q和高热导率兼容的混合材料（即CaF2和硅）制造的微腔结构将使我们能够减少TOM振荡并稳定光输出。
We fabricated a calcium fluoride (CaF2) whispering gallery mode (WGM) microcavity with a computer controlled ultra-precision cutting process. We observed a thermo-opto-mechanical (TOM) oscillation in the CaF2 WGM microcavity, which may influence the stability of the optical output when the cavity is employed for Kerr comb generation. We studied experimentally and numerically the mechanism of the TOM oscillation and showed that it is strongly dependent on cavity diameter. In addition, our numerical study suggests that a microcavity structure fabricated with a hybrid material (i.e. CaF2 and silicon), which is compatible with an ultra-high Q and high thermal conductivity, will allow us to reduce the TOM oscillation and stabilize the optical output.