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中文摘要：
将直径为93um的石英光纤浸入低折射率的若丹明6G乙醇和乙二醇混合溶液中,采用沿光纤轴向光抽运消逝波激励染料增益的方式.研究回音肇模式(WGM)激光辐射的波长随染料混合溶液折射率变化的特性.实验发现,随染料混合溶液折射率的增加,回音壁模式激光辐射的波长向短波方向移动.用回音壁模式染料激光的四能级模型得到激光上能级和所有能级上的分子数比值rO曲线后,很好地解释了实验结果.
英文摘要：
Quartz fiber with diameter of 93 μm is immersed into a low refractive index solution, which is mixed with ethanol and ethylene glycol doped by rhodamine 6G dye molecules. Pumped by evanescent-wave along the fiber axis, the lasing wavelength of whispering gallery mode (WGM) is found blue-shifting with the refractive index of dye solution increasing. The experimental observations are well explained by the γ(λ) curve, which is deduced from the four-energy level model of dye lasing from a WGM fiber laser and caculated by the ratio of molecular density for the upper and total lasing energy levels.
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