High Power Laser Science and Engineering, 2018, 6 (2): 02000e33, Published Online: Jul. 4, 2018  

10 watt-level tunable narrow linewidth $1.5~\unicode[STIX]{x03BC}\text{m}$ all-fiber amplifier Download: 565次

Ni Tang 1,2,3Zhiyue Zhou 1,2,3Zhixian Li 1,2,3Zefeng Wang 1,2,3,*
Author Affiliations
1 College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China
2 Hunan Provincial Collaborative Innovation Center of High Power Fiber Laser, Changsha 410073, China
3 Hunan Provincial Key Laboratory of High Energy Laser Technology, Changsha 410073, China
Abstract
We report here a high-power, wavelength tunable and narrow linewidth $1.5~\unicode[STIX]{x03BC}\text{m}$ all-fiber laser amplifier based on a tunable diode laser and Er-Yb co-doped fibers. The laser wavelength can be precisely tuned from 1535 nm to 1580 nm, which covers many absorption lines of mid-infrared laser gases, such as $\text{C}_{2}\text{H}_{2}$, HCN, CO, and HI. The maximum laser power is ${>}$11 W, and the linewidth is about 200–300 MHz, which is close to the absorption linewidth of the above-mentioned gases. This work provides a suitable pump source for high-power wavelength tunable mid-infrared fiber gas lasers based on low-loss hollow-core fibers.

Ni Tang, Zhiyue Zhou, Zhixian Li, Zefeng Wang. 10 watt-level tunable narrow linewidth $1.5~\unicode[STIX]{x03BC}\text{m}$ all-fiber amplifier[J]. High Power Laser Science and Engineering, 2018, 6(2): 02000e33.

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