Generation of optofluidic laser in stable fiber Fabry-Perot microcavities

被引：5

作者：

Zhang, Tingting ^{[1
]}

Jia, Zhuonan ^{[1
]}

Li, Zhenghua ^{[1
]}

Hua, Shuangquan ^{[1
]}

Chen, Jingdong ^{[1
]}

Wang, Wenjie ^{[1
]}

Liu, Shaoding ^{[1
]}

机构：

[1] Taiyuan Univ Technol, Key Lab Adv Transducers & Intelligent Control Sys, Minist Educ, 79 Yingze St, Taiyuan 030024, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2020年 / 475卷

基金：

中国国家自然科学基金;

关键词：

Optofluidic laser; Fabry-Perot microcavity; Fiber mirror; Stable microcavity; RING-RESONATOR LASERS; EMISSION;

D O I：

10.1016/j.optcom.2020.126234

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In the study, we investigate the generation of optofluidic laser in stable planar-concave Fabry-Perot (FP) microcavities. The concave mirror is created on the end-facet of a fiber using the method of CO2 laser ablation and subsequent coating with dielectric layers. Coumarin 6 in ethanol is used as the gain solution to test the FP microcavities. For comparison, we first test the laser generation in a stable FP microcavity formed by a concave mirror on a fiber and a planar mirror on the substrate of a fused silica without cavity assembly. In this configuration, we can obtain the laser emission with an ultralow pumping energy of 25.5 mu J/ mm(2) at the gain concentration of 10 mu M and a detection limit of gain solution as low as 2 mu M. Then, the generation of optofluidic laser is explored in a polymeric optofluidic chip integrated with a stable fiber FP microcavity in the format of planar-concave mirrors and a microfluidic channel. Laser results in this configuration show a laser threshold of 36.9 mu J/mm(2) at the gain concentration of 10 mu M and a deduced Q-factor of 7.8x10(5) of the FP microcavity.

引用

页数：5

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