Moon H J, Chough Y T, An K
Center for Macroscopic Quantum-Field Lasers, Korea Advanced Institute of Science and Technology, Taejon 305-701, Korea.
Phys Rev Lett. 2000 Oct 9;85(15):3161-4. doi: 10.1103/PhysRevLett.85.3161.
A microcavity laser based on the gain only in the evanescent field region of whispering gallery modes has been demonstrated. A cylindrical microcavity of 125 microm diam was surrounded by rhodamine 6G dye molecules in an ethanol solution of lower refractive index such that whispering gallery modes of the microcavity underwent laser oscillation when the dye molecules in the evanescent field region outside the cavity were excited by a second harmonic of a Nd:YAG laser. For particular pumping spots, single-mode laser oscillation of a transverse magnetic mode was observed at about 600 nm with associated cavity Q of 3x10(7).
一种基于仅在回音壁模式的倏逝场区域存在增益的微腔激光器已得到证实。一个直径为125微米的圆柱形微腔被置于折射率较低的乙醇溶液中的罗丹明6G染料分子所包围，使得当腔外倏逝场区域的染料分子被Nd:YAG激光器的二次谐波激发时，微腔的回音壁模式发生激光振荡。对于特定的泵浦光斑，观察到横磁模式的单模激光振荡，波长约为600纳米，相关的腔Q值为3×10⁷ 。
