Abstract

Optically pumped lasing behaviors modulation was realized in a layered cylindrical microcavity dye laser formed by rhodamine 6G-doped quinoline in a capillary. By inserting an optical fiber into the cylindrical microcavity, whispering gallery modes were successfully suppressed and a new kind of waveguide mode lasing was obtained. The lasing characteristics and resonance mechanism of the two configurations were systematically discussed in both experiment and theoretical calculation. Moreover, the time domain and frequency domain finite element methods were performed and found that with the adjustment of the central fiber, the transition of resonant mode from WGMs to waveguide modes can be achieved.

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