Optical microcavities have both small mode volume V and high quality factor Q, their Q/V values are much larger than conventional optical cavities, which is the base to develop the microlaser.

• 光学微腔同时具有极小的模式体积V和极高的品质因子Q，它的Q/V值要远远高于普通的光学谐振腔，成为微型激光器的首选。