报道了基于空心光子晶体光纤中氢气分子振动受激拉曼散射(SRS)的单程高增益1.9 μm光纤气体激光器。用一个线偏振1064 nm 亚纳秒脉冲微芯激光器抽运一段长6.5 m、充高压氢气的低损耗负曲率空心光纤，实现了到氢气分子一级振动斯托克斯波1907 nm的有效转换。气压为2.3 MPa时最大能量转换效率大于27%，相应的量子转换效率大于48%，激光平均功率约为10 mW，峰值功率大于2000 W。为实现高功率、窄线宽、大范围调谐的紧凑型中红外光纤激光器提供了一条潜在的有效途径。

A single-pass high-gain 1.9 μm fiber gas laser, based on vibrational stimulated Raman scattering in a hydrogen-filled hollow core photonic crystal fiber, is reported. Efficient conversion to the first-order vibrational Stokes wave of 1907 nm is obtained in a low loss negative curvature hollow core fiber with a length of 6.5 m, which is filled with high pressure hydrogen pumped with a linearly polarized 1064 nm microchip pulse laser. The maximum power conversion efficiency, which is more than 27% at 2.3 MPa hydrogen pressure, and a quantum conversion efficiency of 48% are achieved. The maximum laser average power is about 10 mW，and the maximum peak power is more than 2000 W. It provides a potentially effective method to obtain broadly tunable mid-IR fiber lasers of high power and narrow linewidth.