标题： 芯片上超高品质因数小模式体积环形微腔的演示 显示英文标题

标题： Demonstration of ultra-high-Q small mode volume toroid microcavities on a chip

摘要： 光学微腔在空间和时间上限制光，并应用于一系列基础和应用研究。 在许多领域，微腔的优值不仅由光子寿命（或等效品质因数，Q）决定，还由同时实现小模式体积V决定。 在这里，我们展示了片上超高品质因数的小模式体积环形微腔，其Q/V因子超过 $10^{6}(\lambda/n)^{-3}$。 这些数值是目前任何基于芯片的微腔中报道的最高值。 实现了超过200 000的相应普尔塞勒因子和腔体精细度为 $2.8\times10^{6}$，证明了环形微腔在普尔塞勒效应、腔量子电动力学或生物化学传感研究中是有前途的候选者。 显示英文摘要

摘要： Optical microcavities confine light spatially and temporally and find application in a wide range of fundamental and applied studies. In many areas, the microcavity figure of merit is not only determined by photon lifetime (or the equivalent quality-factor, Q), but also by simultaneous achievement of small mode volume V . Here we demonstrate ultra-high Q-factor small mode volume toroid microcavities on-a-chip, which exhibit a Q/V factor of more than $10^{6}(\lambda/n)^{-3}$. These values are the highest reported to date for any chip-based microcavity. A corresponding Purcell factor in excess of 200 000 and a cavity finesse of $2.8\times10^{6}$ is achieved, demonstrating that toroid microcavities are promising candidates for studies of the Purcell effect, cavity QED or biochemical sensing