Li Ming, Wu Xiang, Liu Liying, Xu Lei
Key Lab for Micro and Nanophotonic Structures, Ministry of Education, Department of Optical Science and Engineering, School of Information Science and Engineering, Fudan University, Shanghai 200433, China.
Opt Express. 2013 Jul 15;21(14):16908-13. doi: 10.1364/OE.21.016908.
Silica micro-bubble resonators (MBRs) with cavity quality factor as high as Q = 5 × 10(7) are fabricated. The total dispersion of MBRs is analyzed. The thin-wall structure opens a new anomalous dispersion window and thus supports the dispersion compensation for hyper-parametric frequency conversion processes. Experimentally, Kerr parametric oscillation is observed in a 136 μm diameter MBR, frequency comb generation is also realized. Meanwhile the same nonlinear process is not allowed in solid silica spheres with size smaller than 150 μm.
制造出了腔品质因数高达Q = 5×10⁷的二氧化硅微泡谐振器（MBR）。分析了MBR的总色散。这种薄壁结构开启了一个新的反常色散窗口，从而为超参量频率转换过程提供色散补偿。实验上，在直径为136μm的MBR中观测到了克尔参量振荡，还实现了频率梳的产生。同时，尺寸小于150μm的实心二氧化硅球体中不允许出现同样的非线性过程。
