Acta Optica Sinica, Volume. 40, Issue 20, 2036001(2020)
Efficient Mid-Infrared Difference-Frequency Generation Technology Based on Passive All-Optical Synchronization
We have experimentally investigated mid-infrared (MIR) difference-frequency generation (DFG) based on passive all-optical synchronization. Synchronized pulses were obtained by master-slave injection locking between all-polarization-maintaining Yb- and Er-doped fiber lasers, which were amplified by cascaded fiber amplifiers to realize MIR picosecond pulses at 3071 nm within a PPLN crystal. The maximum pump conversion efficiency is 68.3%, and the peak average power reaches 1.36 W. The results show that the synchronous pulse induced DFG can substantially reduce the pump threshold. Additionally, benefiting from the all-polarization-maintaining fiber architecture for the pulse generation, synchronization and amplification, the MIR ultrafast light source exhibits excellent long-term stability with a relative fluctuation of average power as low as 0.2%.
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Minghang Xu, Jiamei Wu, Bowen Li, Yunfeng Jiang, Qiang Hao, Kangwen Yang, Kun Huang, Heping Zeng. Efficient Mid-Infrared Difference-Frequency Generation Technology Based on Passive All-Optical Synchronization[J]. Acta Optica Sinica, 2020, 40(20): 2036001
Category: Letters
Received: Jul. 28, 2020
Accepted: Aug. 31, 2020
Published Online: Sep. 30, 2020
The Author Email: Huang Kun (khuang@usst.edu.cn)