Moskalev I S, Fedorov V V, Mirov S B
Department of Physics, Univ. of Alabama at Birmingham, 310 Campbell Hall, 1300 University Blvd., Birmingham, AL 35294, USA.
Opt Express. 2009 Feb 16;17(4):2048-56. doi: 10.1364/oe.17.002048.
We demonstrate, for the first time, 10 W, Er-fiber laser pumped, pure CW, thermally diffusion doped, polycrystalline Cr(2+):ZnS laser operating at 2380 nm. We also show Littrow-grating, "single-knob", wavelength tuning of the laser spanning 1940-2780 nm spectral range with the maximum output power of 7.4 W near the central wavelength of 2400 nm and above 2 W over 1970-2760 nm wavelength range. The laser performs with 40% real optical- and 43% slope efficiency, and shows no output power roll-off up to the highest available incident pump power of 27 W.
我们首次展示了由10W铒光纤激光器泵浦、纯连续波、热扩散掺杂、工作在2380nm的多晶Cr(2+):ZnS激光器。我们还展示了利用利特罗光栅实现的“单旋钮”波长调谐，该激光器的调谐光谱范围为1940 - 2780nm，在中心波长2400nm附近的最大输出功率为7.4W，在1970 - 2760nm波长范围内输出功率超过2W。该激光器的实际光学效率为40%，斜率效率为43%，并且在高达27W的最高可用入射泵浦功率下，输出功率均无下降。
