A stable single longitudinal mode optofluidic microcavity laser based on an antiresonant hollow-core fiber (AR-HCF) is proposed and experimentally demonstrated. A hexagonal silica ring inside the AR-HCF is used as the resonator of the optofluidic laser. Experimental results show that the laser can operate in a stable single longitudinal mode without optical mode-selection device and only by introducing a micro-fluid control device. With 5 mmol l −1 Rhodamine B as gain medium, the threshold of the single longitudinal mode microcavity laser is 554 nJ mm −2 and the lasing wavelength is 594.3 nm. When the micro-fluid control speed is 1.5 µ l min −1 , the output power fluctuation of the laser is less than 4% within 35 min. By changing the concentration and type of gain medium, the stability of the single longitudinal mode lasing output can be maintained and the lasing wavelength can be regulated. It holds great promising applications in the multiple...

中文翻译：

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基于反谐振空心光纤的液控稳定单纵模微腔激光器

提出了一种基于反共振空心光纤（AR-HCF）的稳定的单纵模光流微腔激光器，并进行了实验验证。AR-HCF内部的六边形二氧化硅环用作光流体激光器的谐振器。实验结果表明，仅通过引入微流体控制装置，激光器就可以在稳定的单纵模下工作，而无需光学模式选择装置。以5mmol l -1罗丹明B作为增益介质，单纵模微腔激光器的阈值为554 nJ mm -2，激光波长为594.3 nm。当微流体控制速度为1.5 µl min -1时，激光器的输出功率波动在35 min内小于4％。通过改变增益介质的浓度和类型，可以保持单纵模激光输出的稳定性，并且可以调节激光波长。它在多种...