Huang Wei, Wang Zefeng, Zhou Zhiyue, Cui Yulong, Li Hao, Pei Wenxi, Wang Meng, Chen Jinbao
Opt Lett. 2022 May 1;47(9):2354-2357. doi: 10.1364/OL.457265.
We report here the characteristics of a nanosecond high-power mid-infrared (mid-IR) light source based on an anti-resonant hollow-core fiber (AR-HCF) filled with acetylene gas. It is a single-pass configuration with 9.3-m HCFs, pumped by a modulated and amplified diode laser. A maximum average power of approximately 8 W (pulse energy of ∼0.8 µJ and peak power of ∼40 W) at 3.1 µm is achieved with a laser slope efficiency of ∼22.8% at 6 mbar of acetylene, which is, to the best of our knowledge, a record output power for such mid-IR HCF lasers. This work demonstrates the great potential of fiber gas lasers for high-power output in the mid-IR.
我们在此报告一种基于填充乙炔气体的反谐振空芯光纤（AR-HCF）的纳秒高功率中红外（mid-IR）光源的特性。它是一种采用9.3米长空芯光纤的单程配置，由经过调制和放大的二极管激光器泵浦。在乙炔气压为6毫巴时，在3.1微米波长处实现了约8瓦的最大平均功率（脉冲能量约为0.8微焦，峰值功率约为40瓦），激光斜率效率约为22.8%。据我们所知，这是此类中红外空芯光纤激光器的创纪录输出功率。这项工作证明了光纤气体激光器在中红外波段实现高功率输出的巨大潜力。
