科研之友
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摘要
We report the observation of multimode laser operation at wavelengths corresponding to whispering-gallery modes from a freestanding microring cavity based on rhodamine B dye-doped PMMA hollow optical fibre. Cylindrical microcavities with diameters 155, 340 and 615 mu m were fabricated from a dye-doped hollow polymer optical fibre preform. An average mode spacing of 0.17 nm was observed for the 340 mu m cavity. This shows that the laser mode intensity distribution is concentrated on the outer edge of the cavity.
- 出版日期2010-11
