Investigation of Nd:YVO4/YVO4 composite crystal and its laser performance pumped by a fiber coupled diode laser
Investigation of Nd:YVO4/YVO4 composite crystal and its laser performance pumped by a fiber coupled diode laser
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DOI：
10.1016/j.optcom.2007.02.021
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发表时间：
2007-06
影响因子：
2.4
通讯作者：
Z. Zhuo;Tao Li;Xiaoming Li;Hongzhi Yang
中科院分区：
文献类型：
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作者：
Z. Zhuo;Tao Li;Xiaoming Li;Hongzhi Yang
热效应控制对于将二极管端泵浦固体激光器的输出功率扩大到几瓦以上至关重要。扩散键合晶体已被证明是消除端泵浦激光晶体热透镜的有效方法。本文对Nd:YVO4/YVO4复合晶体的温度分布和热透镜进行了数值分析，并与Nd:YVO4晶体进行了比较。建立了端泵浦Nd:YVO4/YVO4复合晶体激光器，并在z腔中进行了测试。在泵浦功率为16.5W时，在1064nm处获得了9.87W的最大输出功率，在532nm处获得了6.14W的最大输出功率。最高的光-光转换效率在1064nm和532nm分别高达60%和40%。
Thermal effect control is critical to scale the output power of diode end-pumping solid lasers to several watts up and beyond. Diffusion bonding crystal has been demonstrated to be an effective method to relieve the thermal lens for the end-pumping laser crystal. The temperature distribution and thermal lens in Nd:YVO4/YVO4composite crystal was numerically analyzed and compared with that of Nd:YVO4 crystal in this paper. The end-pumping Nd:YVO4/YVO4composite crystal laser was set up and tested with z cavity. The maximum output power of 9.87W at 1064nm and 6.14W at 532nm were obtained at the pumping power of 16.5W. The highest optical–optical conversion efficiencies were up to 60% at 1064nm and 40% at 532nm, respectively.