| Study on optical characteristics of Nd:YVO_4/YVO_4 composite crystal laser |
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| 作者姓名： | 李涛 卓壮 李晓敏 杨宏志 张永强 |
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| 作者单位： | College of Physics and Electronics Shandong Normal University，College of Physics and Electronics Shandong Normal University，College of Physics and Electronics Shandong Normal University，College of Information Science and Engineering Shandong University，College of Physics and Electronics Shandong Normal University Ji'nan 250014，Ji'nan 250014 Shanda Luneng Information & Technology Co.，Ltd.，Shandong University，Ji'nan 250100，Ji'nan 250014，Ji'nan 250100，Ji'nan 250014 |
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| 基金项目： | This work was supported by the Science & Technology Research Fund of Shandong Province under Grant No. 031080125，The authors would like to appreciate for the support from Science & Technology Board of Shandong Province. |
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| 摘 要： | Thermal effect in crystals is the main obstacle blocking diode-pumped solid state laser to get high and stable output, power. Diffusion bonding crystal has been demonstrated to be an effective method to relieve the thermal lensing theoretically based on the numerical heat analysis to the end-pumped anisotropic laser crystal. The temperature distributions in Nd:YV04/YVO4 composite crystal and conventional crystal were analyzed and compared. The end-pumped Nd:YVO4/YVO4 composite crystal laser was designed and set up with 2-cavity. The maximum output powers of 9.87 W at 1064 nm and 6.14 W at 532 nm were obtained at the incident purnp power of 16.5 W. The highest optical-optical conversion efficiencies were up to 59.8% at 1064 nm and 37.2% at 532 nm respectively.
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