Powerful 3μm YSGG:Cr : Er and YSGG: Cr :Yb : Ho Q-Switched Lasers Operating in the Repetition-Rate Mode
Powerful 3μm YSGG:Cr : Er and YSGG: Cr :Yb : Ho Q-Switched Lasers Operating in the Repetition-Rate Mode
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DOI：
10.1007/s10946-015-9535-7
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发表时间：
2015-11
影响因子：
0.9
通讯作者：
V. Gordienko;F. Potemkin;A. Pushkin;A. Sirotkin;A. Sirotkin;V. Firsov
中科院分区：
文献类型：
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作者：
V. Gordienko;F. Potemkin;A. Pushkin;A. Sirotkin;A. Sirotkin;V. Firsov
我们研制了兆瓦级的YSGG：Cr：Er和YSGG：Cr：Yb：Ho激光器。在重复频率为5和10 Hz的类高斯模式下，获得了140 mJ的最大输出和40 mJ的输出能量。最小脉冲宽度测量为50 ns。讨论了重复频率对输出能量的影响，证明了KTP晶体可用作YSGG：Cr：Yb：Ho激光器的电光调Q开关。我们实现了50 mJ的脉冲能量与50 ns的脉冲宽度。提出并实现了一种在YSGG：Cr：Er和YSGG：Cr：Yb：Ho晶体依次排列的腔中脉冲-周期两波混合产生巨脉冲的方案，利用受抑全内反射（FTIR）实现调Q。同时，我们在2.79和2.8μm处观察到了强的产生。我们讨论了实现混合固态YSGG：Cr：Er-YSGG：Cr：Yb：Ho激光器产生太赫兹和其他应用的可能性。
We constructQ-switched megawatt-power level YSGG:Cr : Er and YSGG: Cr :Yb : Ho lasers operating in the repetition-rate mode of generation. We obtain the maximum output of 140 mJ at 1Hz and an output energy of 40 mJ in a Gaussian-like mode with a repetition rate of 5 and 10 Hz. The minimum pulse width is measured to be 50 ns. We discuss the influence of the repetition rate on the output energy and prove that a KTP crystal can be used as the electro-opticQ-switch for an YSGG:Cr : Yb :Ho laser. We achieve a 50 mJ pulse energy with 50 ns pulse width. We propose and implement a hybrid scheme of pulse-periodic two-wave generation of giant pulses in the cavity where the YSGG: Cr :Er and YSGG:Cr : Yb :Ho crystals are arranged sequentially, andQ-switching is performed using frustrated total internal reflection (FTIR). Simultaneously, we observe powerful generation at 2.79 and 2.8μm. We discuss the possibility to implement a hybrid solid-state YSGG:Cr : Er–YSGG :Cr : Yb :Ho laser for THz generation and other applications.