Thermal lensing in a diode-end-pumped continuous-wave self-Raman Nd-doped GdVO4 laser
Thermal lensing in a diode-end-pumped continuous-wave self-Raman Nd-doped GdVO4 laser
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DOI：
10.1007/s00340-012-4919-7
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发表时间：
2012-07-01
影响因子：
2.1
通讯作者：
Pask, H. M.
中科院分区：
文献类型：
--
作者：
Omatsu, T.;Okida, M.;Pask, H. M.
在808 nm和879 nm的二极管泵浦下，我们直接测量了连续波掺钕GdVO4自拉曼激光器的热透镜效应。当产生第一-斯托克斯发射时，热透镜效应显著增加，这很可能源于高泵浦功率下的杂质吸收和/或激发态吸收。与808 nm泵浦相比，879 nm泵浦显著降低了激光晶体中的热透镜效应。
We have directly measured thermal lensing in a continuous-wave Nd-doped GdVO4 self-Raman laser under diode pumping at 808 and 879 nm. Thermal lensing increased significantly when generating first-Stokes emission, this most likely originating from impurity absorption and/or excited-state absorption at high pump powers. Pumping at 879 nm significantly reduced thermal lens effects in the laser crystal compared with pumping at 808 nm.