BN as a Saturable Absorber for a Passively Mode-Locked 2 μm Solid-State Laser

作者：Li, Linjun; Yang, Xining; Zhou, Long; Xie, Wenqiang; Bai, Yunfeng; Ye, Gangchao; Shen, Yingjie^*; Lv, Zhiwei^*; Zhang, Han^*; Chen, Minghua; Yang, Yuqiang; Yang, Wenlong; Duan, Xiaoming

来源：Physica Status Solidi-Rapid Research Letters, 2019, 13(3): 1800482.

DOI：10.1002/pssr.201800482

• average output power
• boron nitride
• passively Q-switched
• passively mode-locked
• saturable absorbers
• solid-state laser

Boron nitride (BN) nanosheets are prepared using an ultrasonic decomposition method and demonstrated nonlinear absorption characteristics that saturated at near 2 mu m. A passively mode-locked Tm:YAP laser was perfectly implemented with the BN nanosheets as a saturable absorber (SA). In the passively Q-switched mode-locked mode, an average output power of 880 mW with a pulse duration of 478.83 ps was achieved using an incident pump power of 26.46 W, corresponding to an optical-optical conversion efficiency of 3.33%. A pulse peak power of 19.03 W was acquired at 1937.0 nm from the mode-locked Tm:YAP laser.

• 出版日期2019-3
• 单位哈尔滨学院; 深圳大学; 哈尔滨工业大学; 烟台大学; 河北工业大学