Photonics Research, 2017, 5 (2): 02000073, Published Online: Sep. 26, 2018
Demonstration of an ultra-low-threshold phonon laser with coupled microtoroid resonators in vacuum Download: 834次
Abstract
We demonstrate an ultra-low-threshold phonon laser using a coupled-microtoroid-cavity system by introducing a novel coupling approach. The scheme exhibits both high optical quality factors and high mechanical quality factors. We have experimentally obtained the mechanical quality factor up to 18,000 in vacuum for a radial-breathing mode of 59.2 MHz. The measured phonon lasing threshold is as low as 1.2 μW, which is ~ 5 times lower than the previous result.
Guanzhong Wang, Mingming Zhao, Yingchun Qin, Zhangqi Yin, Xiaoshun Jiang, Min Xiao. Demonstration of an ultra-low-threshold phonon laser with coupled microtoroid resonators in vacuum[J]. Photonics Research, 2017, 5(2): 02000073.