光学
激光阈值
激光器
光纤激光器
波长
材料科学
光子晶体光纤
连续波
光电子学
物理
作者
Bo Hu,Lu Chen,Xuemei Yang,Linzhen He,Yang Li,Wenlong Li,Han Wu,Houkun Liang
出处
期刊:Optics Letters
[The Optical Society]
日期:2024-01-26
卷期号:49 (4): 1101-1101
被引量:2
摘要
We report the continuous-wave (cw) difference-frequency generation (DFG) in a ZnGeP 2 (ZGP) crystal that produces tunable long-wavelength infrared (LWIR) lasing. Particularly, we experimentally demonstrate the feasibility to drive DFG in ZGP by all-fiber near-infrared fiber lasers consisting of a 1.3 µm tunable cw random Raman fiber laser (RRFL) and a 1.5 µm erbium-doped fiber amplifier seeded by a tunable distributed feedback (DFB) laser, making the whole system compact and robust. As a result, the demonstrated LWIR DFG presents a broadband spectral tuning range spanning from 9.5 to 11.5 µm, and the output powers in the spectral range of 9.5–11 µm are larger than 40 µW pumped by watt-level fiber lasers. Meanwhile, as a typical application, a proof-of-concept demonstration of gas sensing of SF 6 is executed based on the generated cw LWIR source. Our work demonstrates that the combination of ZGP crystal and fiber lasers can provide an effective and robust approach for the generation of cw LWIR radiation with useful power and broadband wavelength tunability.
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