Observation of two-photon fluorescence for Rhodamine 6G in microbubble resonators

被引：10
作者：
Cohoon, Gregory A. [1 ]
Kieu, Khanh [1 ]
Norwood, Robert A. [1 ]
机构：
[1] Univ Arizona, Coll Opt Sci, Tucson, AZ 85721 USA
来源：
OPTICS LETTERS | 2014年 / 39卷 / 11期
关键词：
LABEL-FREE DETECTION; EXCITATION; MICROCAVITY; GENERATION;
D O I：
10.1364/OL.39.003098
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report an observation of multi-photon excitation of organic chromophores in microbubble whispering gallery mode resonators. High-Q microbubble resonators were formed by heating a pressurized fused silica capillary to form a hollow bubble that was then filled with liquid. In this work, the microbubble was filled with a solution of Rhodamine 6G dye. The resonator and dye were excited by evanescently coupling continuous wave (CW) light from a 980 nm laser diode using a tapered optical fiber. The two-photon fluorescence of the dye can be seen with pump powers as low as 700 mu W. (C) 2014 Optical Society of America
引用
收藏
页码：3098 / 3101
页数：4
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