70% frequency-doubling efficiency of 0.8-W mode-locked picosecond Ti:sapphire laser with external cavity
70% frequency-doubling efficiency of 0.8-W mode-locked picosecond Ti:sapphire laser with external cavity
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70%%20倍频%20效率%20of%200.8-W%20锁模%20皮秒%20Ti:蓝宝石%20激光%20with%20外部%20腔体
DOI：
10.1117/12.874565
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
H. Kumagai
中科院分区：
文献类型：
--
作者：
T. Ohira;S. Maeda;Y. Takida;H. Kumagai
在工业和科学领域中，紫外和真空紫外区域中的光源的重要性已经增加。通常，近红外相干光在外增强腔中的二次谐波产生被用来获得高效率和高功率的相干紫外光。然而，高平均功率的泵浦光对于这种高效的波长转换是必需的。研究了利用BiB_3O_6（BiBO）晶体作为非线性光学系数较高的非线性晶体，通过优化外腔结构，实现紫外连续波和准连续波的高效、简单产生。报道了利用掺BiBO的钛宝石锁模皮秒脉冲激光器产生高效率的389nm相干光。在最大输入功率为800mW，最大效率为63%的条件下，获得了500mW以上的389nm激光输出。考虑到输出镜对389nm光的反射损耗，可以得到70%的转换效率。该值是平均泵浦功率小于1W的二次谐波产生的最佳结果之一。
The importance of the light source in the UV and VUV region has increased in industrial and scientifical fields. In general, the second harmonic generation of near-infrared coherent light in an external enhancement cavity has been used to obtain high-efficiency and high-power coherent UV lights. However, the pump light of the high average power has been necessary for such high-effective wavelength conversions. We studied high-efficient and simple generation of UV continuous and quasi-continuous waves by optimizing an external cavity and using a BiB3O6 (BiBO) as a nonlinear crystal of relatively high nonlinear optical coefficient. We report the generation of high-efficient 389nm coherent light based on the second harmonic generation of a mode-locked Ti:sapphire picosecond pulses laser with BiBO. As a result, more than 500mW of output at 389nm was obtained with the maximum input of 800mW and a maximum efficiency of 63%. Furthermore, considering the reflective loss of output mirror of 389nm light, we could obtain 70% conversion efficiency. This value was one of the best results of the second harmonic generation of less than 1W of average pump power.
影响因子：
3.8
作者：
Yun Zhang;Yusuke Sato;Nobuyoshi Watanabe;Riskey Ananda;Y. Okada-Shudo;M. Watanabe;M. Hyodo;Xiaoyan Wang;Chuangtian Chen;T. Kanai;S. Watanabe
通讯作者：
Yun Zhang;Yusuke Sato;Nobuyoshi Watanabe;Riskey Ananda;Y. Okada-Shudo;M. Watanabe;M. Hyodo;Xiaoyan Wang;Chuangtian Chen;T. Kanai;S. Watanabe