1. Sub-15-ns Passively Q-Switched Er:YSGG Laser at $2.8~\mu$ m With Fe:ZnSe Saturable Absorber.
- Author
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Zhang, Yuzhao, Xu, Bin, Tian, Qingyu, Luo, Zhengqian, Xu, Huiying, Cai, Zhiping, Sun, Dunlu, Zhang, Qingli, Liu, Peng, Xu, Xiaodong, and Zhang, Jian
- Abstract
At present, pulse widths of passively Q-switched mid-infrared lasers at ${\sim }2.8 {\mu }\text{m}$ have been limited to be at least several hundreds of nanoseconds. In this letter, by configuring a compact laser resonator, we report on diode-pumped continuous-wave and passively Q-switched mid-infrared Er:YSGG lasers. Laser emission at 2797 nm is achieved with a maximum output power of 0.63 W and slope efficiency of 13.9% in continuous-wave mode. Using polycrystalline Fe:ZnSe as saturable absorber, the passively Q-switched operation is also realized with the narrowest pulse width of about 14.6 ns, which is believed to be the shortest pulse for passively Q-switched mid-infrared lasers. The generated maximum pulse energy and peak power are 5.05 ${\mu }\text{J}$ and 345.8 W, respectively. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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