Opt Lett. 2023 May 15;48(10):2647-2650. doi: 10.1364/OL.487587.
We report the nonlinear pulse compression of a high-power, thulium-doped fiber laser system using a gas-filled hollow-core fiber. The sub-two cycle source delivers 1.3 mJ pulse energy with 80 GW peak power at a central wavelength of 1.87 μm and an average power of 132 W. This is, so far, to the best of our knowledge, the highest average power of a few-cycle laser source reported in the short-wave infrared region. Given its unique combination of high pulse energy and high average power, this laser source is an excellent driver for nonlinear frequency conversion, toward terahertz, mid-infrared, and soft X-ray spectral regions.
我们报告了一种使用充气管状中空光纤实现的高功率掺铥光纤激光系统的非线性脉冲压缩。该亚 2 周期源在中心波长为 1.87μm 时输出 1.3mJ 脉冲能量和 80GW 峰值功率，平均功率为 132W。就我们所知，这是迄今为止在近红外区域报道的最高平均功率的少周期激光源。鉴于其高脉冲能量和高平均功率的独特组合，这种激光源是用于非线性频率转换的理想光源，可实现太赫兹、中红外和软 X 射线光谱区域。
