Cui Jin-Ming, Dong Chun-Hua, Zou Chang-Ling, Sun Fang-Wen, Xiao Yun-Feng, Han Zheng-Fu, Guo Guang-Can
Key Lab of Quantum Information, University of Science and Technology of China, Hefei 230026, Anhui, China.
Appl Opt. 2013 Jan 10;52(2):298-301. doi: 10.1364/AO.52.000298.
High-Q deformed silica microsphere cavities are fabricated by short CO(2) laser pulses, where the deformation is well controlled by adjusting the intensity and number of pulses. Using this method, directional emission from whispering-gallery mode (WGM) with a high quality factor of 10(7) in these microspheres is achieved, and a transition from two-directional to single-directional emission is observed. Such concentrated directional emission and high-Q of WGMs show high potential for future studies of the chaotic ray dynamics in deformed microcavity and cavity quantum electrodynamics and optomechanics.
通过短脉冲CO(2)激光制造出高品质因子的变形二氧化硅微球腔，其中通过调整脉冲强度和数量可很好地控制变形。利用该方法，在这些微球中实现了品质因子高达10(7)的回音壁模式（WGM）的定向发射，并观察到从双向发射到单向发射的转变。这种集中的定向发射和WGM的高品质因子在未来变形微腔中的混沌光线动力学、腔量子电动力学和光力学研究中显示出巨大潜力。
