Kerr-lens mode-locked polycrystalline Cr:ZnS femtosecond laser pumped by a monolithic Er:YAG laser
Hu Chengfeng1, Zhu Jiangfeng1, †, Wang Zhaohua2, Sun Xintong1, Wei Long1, Ling Weijun3, Dong Zhong3, Wang Qing4, Gao Chunqing4, Wei Zhiyi1, 2, ‡
       

(color online) (a) Laser spectrum and (b) autocorrelation trace of the KLM Cr:ZnS laser.