Ma Jiasai, Jiang Wenguang, Shen Chuanhe, Yuan Shanfu
Appl Opt. 2018 Mar 10;57(8):1958-1961. doi: 10.1364/AO.57.001958.
A MoSe nanosheets-based saturable absorber (SA) was fabricated successfully by the liquid-phase exfoliation method. A passively Q-switched crystalline Yb:YAG laser was realized with the MoSe SA inserted inside the cavity. The shortest pulses at a wavelength of 1049 nm with a duration of 250 ns, maximum repetition rate of 181 kHz, and an average output power of 158 mW were emitted, corresponding to a maximum pulse energy of 0.87 μJ. To the best of our knowledge, this is the first experimental demonstration of the nonlinear absorption property of MoSe nanoplatelets in a crystalline Yb-doped solid-state laser, which also proves the great potential of the MoSe SA as an optical modulator in the 1 μm spectral region.
通过液相剥离法成功制备了基于MoSe纳米片的可饱和吸收体（SA）。将MoSe SA插入腔内，实现了被动调Q的晶体Yb:YAG激光器。发射出波长为1049 nm、脉宽为250 ns、最大重复频率为181 kHz、平均输出功率为158 mW的最短脉冲，对应最大脉冲能量为0.87 μJ。据我们所知，这是首次在掺Yb晶体固态激光器中对MoSe纳米片的非线性吸收特性进行实验演示，这也证明了MoSe SA作为1μm光谱区域光调制器的巨大潜力。
