MoS_2 saturable absorber prepared by chemical vapor deposition method for nonlinear control in Q-switching fiber laser
MoS_2 saturable absorber prepared by chemical vapor deposition method for nonlinear control in Q-switching fiber laser作者机构:State Key Laboratory of Information Photonics and Optical CommunicationsSchool of ScienceBeijing University of Posts and TelecommunicationsBeijing 100876China Beijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing 100190China
出 版 物:《Chinese Physics B》 (中国物理B(英文版))
年 卷 期:2018年第27卷第8期
页 面:7-12页
核心收录:
基 金: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)
主 题:nonlinear optical materials fiber laser Q-switching
摘 要:Due to the remarkable carrier mobility and nonlinear characteristic, MoS2 is considered to be a powerful competitor as an effective optical modulated material in fiber lasers. In this paper, the MoS2 films are prepared by the chemical vapor deposition method to guarantee the high quality of the crystal lattice and uniform thickness. The transfer of the films to microfiber and the operation of gold plated films ensure there is no heat-resistant damage and anti-oxidation. The modulation depth of the prepared integrated microfiber-MoS2 saturable absorber is 11.07%. When the microfiber-MoS2 saturable absorber is used as a light modulator in the Q-switching fiber laser, the stable pulse train with a pulse duration of 888 ns at 1530.9 nm is obtained. The ultimate output power and pulse energy of output pulses are 18.8 mW and 88 nJ, respectively. The signal-to-noise ratio up to 60 dB indicates the good stability of the laser. This work demonstrates that the MoS2 saturable absorber prepared by the chemical vapor deposition method can serve as an effective nonlinear control device for the Q-switching fiber laser.