Single crystal fiber (SCF) lasers have attracted extensive attention recently. In this paper, Tm:SrF₂ SCF was successfully grown by the temperature gradient method. With a compact resonator, the acousto-optically Q-switched properties of a diode-pumped Tm:SrF₂ SCF laser was investigated first. At the repetition rate of 500 Hz, a highest pulse energy of 1.32 mJ and a narrowest pulse width of 51 ns were acquired with the absorbed pump power of 2.60 W, resulting in the peak power of 25.85 kW. These results indicate that Tm:SrF₂ SCF is a promising laser gain material for generating ∼2 µm region pulsed lasers.

中文翻译：

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近 2 µm Tm:SrF2 单晶光纤激光器的有源调Q操作

单晶光纤（SCF）激光器最近引起了广泛的关注。在本文中，Tm:SrF ₂ SCF 通过温度梯度法成功生长。使用紧凑型谐振腔，首先研究了二极管泵浦 Tm:SrF ₂ SCF 激光器的声光调Q特性。在 500 Hz 的重复频率下，最高脉冲能量为 1.32 mJ，最窄脉冲宽度为 51 ns，吸收泵浦功率为 2.60 W，峰值功率为 25.85 kW。这些结果表明，Tm:SrF ₂ SCF 是一种很有前途的激光增益材料，可用于产生 ~2 µm 区域脉冲激光。