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首页> 外文期刊>Optics Letters >Growth, spectroscopy, and laser performance of a 2.79 mu m Cr,Er,Pr:GYSGG radiation-resistant crystal
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Growth, spectroscopy, and laser performance of a 2.79 mu m Cr,Er,Pr:GYSGG radiation-resistant crystal

机译:2.79 μ m Cr,Er,Pr:GYSGG抗辐射晶体的生长、光谱学和激光性能

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We demonstrate the growth, spectroscopy, and laser performance of a 2.79 mu m Cr,Er,Pr:GYSGG radiation-resistant crystal. The lifetimes for the upper laser level I-4(11/2) and lower laser level I-4(13/2) are 0.59 and 0.84 ms, respectively, which are due to the doping of the Pr3+ ions. A maximum pulse energy of 278 mJ operated at 10 Hz and 2.79 mu m is obtained when pumped with a flash lamp, which corresponds to the electrical-to-optical efficiency of 0.6 and a slope efficiency of 0.7. A maximum average power of 2.9 W at 60 Hz is achieved, which corresponds to the electrical-to-optical efficiency of 0.4 and slope efficiency of 0.8. Compared with a Cr,Er:YSGG crystal, the Cr,Er,Pr:GYSGG crystal can be operated at a higher pulse repetition rate. These results suggest that doping deactivator Pr3+ ions can effectively decrease the lower laser level lifetime and improve the laser repetition rate. Therefore, the application fields and range of the Cr,Er,Pr:GYSGG laser can be extended greatly due to its properties of radiation resistance and high repetition frequency. (C) 2015 Optical Society of America
机译:我们展示了 2.79 μ m Cr,Er,Pr:GYSGG 抗辐射晶体的生长、光谱学和激光性能。上激光水平 I-4(11/2) 和下激光水平 I-4(13/2) 的寿命分别为 0.59 和 0.84 ms,这是由于 Pr3+ 离子的掺杂。当使用闪光灯泵浦时,在10 Hz和2.79 μ m下工作的最大脉冲能量为278 mJ,相当于0.6%的电光效率和0.7%的斜率效率。在 60 Hz 时可实现 2.9 W 的最大平均功率,相当于 0.4% 的电光效率和 0.8% 的斜率效率。与Cr,Er:YSGG晶体相比,Cr,Er,Pr:GYSGG晶体可以在更高的脉冲重复频率下工作。这些结果表明,掺杂钝化剂Pr3+离子可以有效降低较低的激光电平寿命,提高激光重复率。因此,Cr、Er、Pr:GYSGG激光器具有抗辐射、重复频率高等特点,可以大大扩展其应用领域和范围。(C) 2015年美国光学学会

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