Er3+ doped GYSGG crystal as a new laser material resistant to ionizing radiation
Er3+ doped GYSGG crystal as a new laser material resistant to ionizing radiation
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DOI：
10.1016/j.optcom.2013.03.048
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发表时间：
2013-08
影响因子：
2.4
通讯作者：
Jiakang Chen;D. Sun;Jianqiao Luo;Jing-zhong Xiao;R. Dou;Qingli Zhang
中科院分区：
文献类型：
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作者：
Jiakang Chen;D. Sun;Jianqiao Luo;Jing-zhong Xiao;R. Dou;Qingli Zhang
报道了一台2.796μm二极管端面泵浦的Er：GySGG(Gd1.17Y1.83Sc2Ga3O12)激光器，激光器工作在脉冲和连续(CW)模式。在脉冲宽度为2ms时，获得了最大激光能量2.43mJ，对应的峰值功率为1.25W，斜率效率为7.2%。在连续波模式下，最大输出功率为348 mW，对应的光光转换效率为9.2%，斜率效率为10.1%。M2因子为1.94，光束发散角为6.4mrad。100Mrad的伽马辐射仅对激光输出性能有轻微影响。这一结果表明，Er：GYSGG晶体是一种潜在的新型中红外抗辐射激光材料，可应用于空间和电离辐射环境。
We demonstrate a 968nm diode end-pumped Er:GYSGG (Gd1.17Y1.83Sc2Ga3O12) laser at 2.796μm operated in the pulse and continuous-wave (CW) modes. A maximum laser energy of 2.43mJ is obtained at a pulse width of 2ms, corresponding to a peak power of 1.25W and a slope efficiency of 7.2%. In the CW mode, the maximum output power is 348mW, corresponding to an optical–optical conversion efficiency of 9.2% and a slope efficiency of 10.1%. The M2factor is 1.94, and the beam divergence is 6.4mrad. Gamma irradiation at 100Mrad only slightly affects laser output performance. This result suggests that Er:GYSGG crystal is a potentially new mid-infrared radiation-resistant laser material that can be applied in space and ionizing radiation environment.