Chinese Optics Letters, 2018, 16 (2): 020018, Published Online: Jul. 16, 2018
Enhanced saturable absorption of MoS 2 black phosphorus composite in 2 μm passively Q-switched Tm: YAP laser
Abstract
We report the fabrication of an MoS 2 black phosphorus (BP) composite saturable absorber by liquid phase exfoliation and the spin-coating method and further exploitation to build a 2 μm passively Q-switched Tm:YAP laser. Such a composite based Q-switched laser with a duration of 488 ns and corresponding peak power of 85.9 W is obtained, which shows an improved saturable absorption effect than that of single MoS 2 (616 ns, 68.7 W) and BP (932 ns, 22.4 W). The results indicate that simple and reasonable fabrication of the vertical composite from two-dimensional atomic layer materials opens up the possibility to create an unprecedented saturable absorber with exciting properties.
Yang Xue, Zhenda Xie, Zhilin Ye, Xiaopeng Hu, Jinlong Xu, Han Zhang. Enhanced saturable absorption of