Yonghang Shen, Bo Wu, Chengzhi Hu, Wenjie Yue, Yiluo Jiang. Experimental Investigation on the High Average Power ns Mid-Infrared Laser Output at 3.8 μm Through Difference Frequency Generation[J]. Chinese Journal of Lasers, 2022, 49(1): 0101017
- Chinese Journal of Lasers
- Vol. 49, Issue 1, 0101017 (2022)
Fig. 1. Principle diagram of 3.8 μm laser output by using DFG
Fig. 2. Principle diagram of cladding-pumped all-polarization Yb-doped fiber mode-locked laser
Fig. 3. Principle diagram of 1094 nm laser pump source obtained by two stage amplification of gain modulated self-seeded LD output pulse
Fig. 4. Output power dependence of 3.8 μm laser on the 1094 nm pump power at optimum operating temperature of 51 ℃. (a) Mode-locked pulse seed; (b) gain modulated LD pulse seed
Fig. 5. Pulse waveform of laser output. (a) 1094 nm from direct mode-locked output; (b) 1094 nm after fiber amplification; (c) 1535 nm before DFG; (d) 1535 nm after DFG
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