Generation of low-threshold optofluidic lasers in a stable Fabry-Perot microcavity

Generation of low-threshold optofluidic lasers in a stable Fabry-Perot microcavity
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在稳定的法布里-珀罗微腔中产生低阈值光流控激光器

DOI:
10.1016/j.optlastec.2016.12.017
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发表时间:
2017-06
影响因子:
5
通讯作者:
Chen Jingdong
Chen Jingdong
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Zhang Tingting;Zhou Chunhua;Wang Wenjie;Chen Jingdong

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提出了在低泵浦阈值的fabry - p<s:1>微腔中产生光流激光器的方法。FP微腔由一个微凹面镜与另一个平面镜相对构成,形成稳定的腔体。两个反射镜表面均涂有介质层,反射率≥99.9%。采用增益介质罗丹明6g (R6G)分别溶解于乙醇和离子水中,测试激光行为;在乙醇溶液中,最低泵送阈值小至0.13 μJ/mm2,对应于理论计算的质量值q0约为4×105。实验结果表明,FP微腔中能发射激光信号的最低染料介质浓度为3 μM。
We present the generation of optofluidic lasers in a Fabry-Pérot (FP) microcavity with low pumping threshold. The FP microcavity is constructed with one micro-concave mirror and another planar mirror facing each other to form a stable cavity. The two mirrors are coated with dielectric layers with reflectivity ≥99.9%. Laser behaviors are tested with gain medium, Rhodamine 6 G (R6G), dissolved in ethanol and ion water, respectively; a lowest pumping threshold as small as 0.13 μJ/mm2is achieved in the ethanol solution, corresponding to a theoretically calculated quality value Q0about 4×105. Meanwhile experimental results demonstrates that the lowest concentration of dye medium that can emit laser signal in the FP microcavity is 3 μM.
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