Cylindrical microcavity laser based on the evanescent-wave-coupled gain
Cylindrical microcavity laser based on the evanescent-wave-coupled gain
复制标题
DOI：
10.1103/physrevlett.85.3161
复制
发表时间：
2000-10-09
影响因子：
8.6
通讯作者：
An, K
中科院分区：
文献类型：
--
作者：
Moon, HJ;Chough, YT;An, K
介绍了一种仅在回音廊模式的逝去场区获得增益的微腔激光器。在折射率较低的乙醇溶液中，用罗丹明6G染料分子包围直径为125微米的圆柱形微腔，当腔外逝去场区的染料分子被二次谐波激光激发时，微腔的回音廊模式发生激光振荡。对于特定的泵浦光斑，在约600 nm处观察到横向磁模的单模激光振荡，相应的腔Q为3×10(7)。
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 mu m 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 3 x 10(7).