Abstract

A 200-W continuous-wave thulium-doped all-fiber laser at 2050 nm was developed with a master oscillator power amplifier configuration. For the master oscillator, a single-mode thulium-doped fiber laser was built with fiber Bragg gratings. The operating power of the oscillator was 10.1 W at a pump power of 20.9 W, and the slope efficiency was measured to be 53.0%. All emitted wavelengths of the oscillator were located between 2049.2 nm and 2049.9 nm, and no other peaks in different wavelength ranges were observed. The maximum output power of the final amplified beam was 204.6 W at a pump power of 350.4 W. The slope efficiency of the amplifier was measured to be 58.4%.

© 2021 Optical Society of Korea

300 W-level, wavelength-widely-tunable, all-fiber integrated thulium-doped fiber laser

Ke Yin, Rongzhen Zhu, Bin Zhang, Guangchen Liu, Pu Zhou, and Jing Hou
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1  kW peak power, 110  ns single-frequency thulium doped fiber amplifier at 2050  nm

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High-power all-fiber wavelength-tunable thulium doped fiber laser at 2 μm

Ke Yin, Bin Zhang, Guanghui Xue, Lei Li, and Jing Hou
Opt. Express 22(17) 19947-19952 (2014)