High Efficient Laser Operation of the High-Doped Nd:YAG Crystal Grown by Temperature Gradient Technology
MAO Yan-Li1,2, DENG Pei-Zhen1, ZHANG Ying-Hua1, GUO Ju-Pin1, GAN Fu-Xi1
1Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
2Department of Physics, Henan University, Kaifeng 475001
High Efficient Laser Operation of the High-Doped Nd:YAG Crystal Grown by Temperature Gradient Technology
MAO Yan-Li1,2;DENG Pei-Zhen1;ZHANG Ying-Hua1;GUO Ju-Pin1;GAN Fu-Xi1
1Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
2Department of Physics, Henan University, Kaifeng 475001
Abstract： We investigate the optical properties of Nd:YAG crystals grown by temperature gradient technology with different Nd-doping levels. The Nd concentrations used are 1.0at.%, 1.5at.%, 2.0at.%, 2.5at.%, and 3.0at.%, respectively. It is found that the absorption coefficients of Nd:YAG crystals increase with the increasing Nd concentrations. The absorption coefficient of 3.0at.% Nd:YAG is up to 22.1cm-1. The laser performance of these Nd:YAG crystals is compared with that of the traditional Nd:YAG (1.1at.% Nd) grown by the Czochralski (CZ) method. Although concentration quenching exists in highly doped Nd:YAG, 2.0at.% Nd:YAG shows excellent performance with the slope efficiency of 46.7%, which is higher than that (39%) of 1.1at.% Nd:YAG grown by the CZ method.
MAO Yan-Li;DENG Pei-Zhen;ZHANG Ying-Hua;GUO Ju-Pin;GAN Fu-Xi. High Efficient Laser Operation of the High-Doped Nd:YAG Crystal Grown by Temperature Gradient Technology[J]. 中国物理快报, 2002, 19(9): 1293-1295.
MAO Yan-Li, DENG Pei-Zhen, ZHANG Ying-Hua, GUO Ju-Pin, GAN Fu-Xi. High Efficient Laser Operation of the High-Doped Nd:YAG Crystal Grown by Temperature Gradient Technology. Chin. Phys. Lett., 2002, 19(9): 1293-1295.
2002, Vol. 19 
