Yubin Hou, Xiangwen Lu, Qian Zhang, Pu Wang. Ultra-low noise 2 μm high power single-frequency fiber laser for next generation gravitational-wave detector (Invited)[J]. Infrared and Laser Engineering, 2022, 51(6): 20220400
- Infrared and Laser Engineering
- Vol. 51, Issue 6, 20220400 (2022)
Fig. 1. Experimental setup of the ultra-low noise 2 μm single-frequency PM fiber laser
Fig. 2. RIN of 1 550 nm SFL with and without feedback control loop
Fig. 3. RIN (a) and frequency noise (b) of 2 μm SFFL pumped with and without feedback
Fig. 4. RIN (a) and frequency noise (b) of the thulium-doped polarization-maintaining fiber amplifier pumped with and without feedback
Fig. 5. Frequency response to PZT modulation (a) and frequency drift of 2 μm SFFL in 1 h (b)
Fig. 6. Linewidth of 2 μm single-frequency laser at 5.2 W output (a), power stability within 1 h (b) and spectra of 2 μm single-frequency laser before and after amplification (c)
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