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采用调节腔损耗以调节阈值的方法实现了掺Ｙｂ 双包层石英光纤激光器的波长调谐输出调谐范围达５０ｎｍ 、步长约２ｎｍ 当损耗增大阈值升高时，激射波长向短波方向漂移利用石英中Ｙｂ３＋ 的能级结构和光谱特性对以上规律进行了定性解释
The wavelength tuning output of doped Yb double clad silica fiber laser is achieved by adjusting the cavity loss to adjust the threshold. The tuning range is up to 50nm and the step length is about 2nm. When the threshold of increasing loss increases, the lasing wavelength shifts to the shortwave direction Use the energy level structure and spectral characteristics of Yb3 + in quartz to qualitatively explain the above rules