基于偏硼酸钡晶体高重复频率266 nm紫外激光器

发布时间：2018-03-07 08:23

  本文选题：紫外脉冲激光器　切入点：高重复频率　出处：《激光与红外》2017年09期 　论文类型：期刊论文

【摘要】：报道了利用基于掺镱光纤脉冲激光器1064 nm基频光通过偏硼酸钡晶体(β-BaB_2O_4,BBO)晶体四次谐波技术获得266 nm的紫外激光输出,利用双晶体空间走离补偿技术在重复频率为80 MHz平均输出功率为2.9 W,532 nm到266 nm的转化效率为36.5%。通过测量266 nm光强的变化发现双光子吸收效应导致了动态色心的形成,以及色心密度与双光子吸收系数随着晶体温度变化的规律,实验数据表明在晶体温度200℃的双光子吸收效应比室温时低了3.5倍,提高了266 nm紫外激光的输出功率和稳定度。
[Abstract]:Based on ytterbium-doped fiber pulse laser 1064 nm fundamental frequency light is used to obtain 266 nm ultraviolet laser output through the fourth harmonic technique of 尾 -BaB2O4BBOO crystal. The conversion efficiency of the double crystal space walk compensation technique at the repetition rate of 80 MHz is 2.9WN 532nm to 266nm. By measuring the variation of 266nm light intensity, it is found that the two-photon absorption effect leads to the formation of the dynamic color center. The experimental data show that the two-photon absorption effect at 200 鈩，

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