MoS2 saturable absorber prepared by chemical vapor deposition method for nonlinear control in Q-switching fiber laser Project supported by the National Natural Science Foundation of China (Grant No. 11674036), the Beijing Youth Top-notch Talent Support Program, China (Grant No. 2017000026833ZK08), the Fund of State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, China (Grant Nos. IPOC2016ZT04 and IPOC2017ZZ05). |
(color online) (a) Surface morphology image of MoS2 film; (b) altitude difference of the surface. |