Spencer Daryl T, Davenport Michael L, Komljenovic Tin, Srinivasan Sudharsanan, Bowers John E
Opt Express. 2016 Jun 13;24(12):13511-7. doi: 10.1364/OE.24.013511.
Recent results on heterogeneous Si/III-V lasers and ultra-high Q SiN resonators are implemented in a Pound-Drever-Hall frequency stabilization system to yield narrow linewidth characteristics for a stable on-chip laser reference. The high frequency filtering is performed with Si resonant mirrors in the laser cavity. To suppress close in noise and frequency walk off, the laser is locked to an ultra-high Q SiN resonator with a 30 million quality factor. The laser shows high frequency noise levels of 60 × 10 Hz/Hz corresponding to 160 kHz linewidth, and the low frequency noise is suppressed 33 dB to 10 Hz/Hz with the PDH system.
近期关于异质硅/III-V族激光器和超高Q值氮化硅谐振器的研究成果被应用于庞德-德瑞弗-霍尔频率稳定系统中，以实现窄线宽特性，从而获得稳定的片上激光参考源。高频滤波通过激光腔内的硅谐振镜来完成。为了抑制近距离噪声和频率偏移，该激光器被锁定到一个品质因数为3000万的超高Q值氮化硅谐振器上。该激光器显示出对应于160kHz线宽的60×10Hz/Hz的高频噪声水平，并且在庞德-德瑞弗-霍尔系统中，低频噪声被抑制了33dB，降至10Hz/Hz。
