搭建了由国产1908 nm掺铥光纤激光器抽运的中红外可调谐窄线宽Cr∶ZnSe激光器。该激光器为X型腔结构，在抽运功率6.8 W时连续光最大输出功率为1.6 W，对应的斜效率为26.7%，中心波长为2420 nm。采用Littrow结构实现了2284~2716 nm的连续可调谐，调谐范围为432 nm，半峰全宽(FWHM)为0.13 nm；抽运功率5 W时采用输出比22%的耦合输出镜在2350~2510 nm范围内获得了大于500 mW的输出。采用Littman结构实现了2305~2658 nm的连续可调谐，调谐范围为353 nm，FWHM小于0.05 nm；抽运功率5 W时可在2350~2520 nm范围内实现300 mW以上激光功率输出。

A tunable, narrow linewidth mid-infrared Cr∶ZnSe laser consisting of X-type cavity pumped by a home-made 1908 nm thulium-doped fiber laser is built. The maximum continuous wave output power is 1.6 W at central wavelength of 2420 nm with respect to incident pump power of 6.8 W, and the corresponding slope efficiency is 26.7%. Littrow configuration is adopted to realize the continuous tuning between 2284 nm to 2716 nm with a tuning range of 432 nm, the full width at half maximum (FWHM) is 0.13 nm. The output power of more than 500 mW is achieved in the range from 2350 nm to 2510 nm by using 22% output ratio of coupling output mirror with respect to incident pump power of 5 W. Littman configuration is adopted to realize the continuous tuning from 2305 nm to 2658 nm with a tuning range of 353 nm, and the FWHM is less than 0.05 nm. The output power of more than 300 mW is achieved in the range from 2350 nm to 2520 nm.