Laser & Optoelectronics Progress, Volume. 62, Issue 15, 1514001(2025)
2 μm Ring Cavity Thulium-Doped Fiber Laser Directly Pumped by 793 nm Laser Diode with Wide Tunable Wavelength and Narrow Linewidth
Fig. 1. Experimental setup diagram of 2 μm narrow linewidth fiber laser with tunable wavelength
Fig. 2. Laser output power and slope efficiency. (a) Output power versus pump light power at different gain fiber lengths; (b) laser slope efficiency versus the length of gain fiber
Fig. 3. Spectral diagram of ring cavity laser and laser output power variation diagram. (a) Laser spectral diagram with or without saturable absorber and PC in ring cavity; (b) laser output power versus the length of saturable absorber; (c) spectral characteristics of output laser at 1950 nm wavelength
Fig. 4. Output laser wavelength tuning. (a) Output spectra and signal-to-noise ratio; (b) spectral characteristics of output laser at 2000 nm wavelength; (c) spectral characteristics of output laser at 2048 nm wavelength
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Jianwei Wang, Hui Shen, Junjie Ren, Zhenxing He, Yunfeng Qi, Bo Dai, Xisheng Ye. 2 μm Ring Cavity Thulium-Doped Fiber Laser Directly Pumped by 793 nm Laser Diode with Wide Tunable Wavelength and Narrow Linewidth[J]. Laser & Optoelectronics Progress, 2025, 62(15): 1514001
Category: Lasers and Laser Optics
Received: Nov. 7, 2024
Accepted: Dec. 25, 2024
Published Online: Jul. 8, 2025
The Author Email: Hui Shen (huishen@siom.ac.cn), Yunfeng Qi (dreamer_7@siom.ac.cn)
CSTR:32186.14.LOP242230