Chinese Optics Letters, 2019, 17 (9): 091402, Published Online: Aug. 6, 2019   

Towards all-fiber structure pulsed mid-infrared laser by gas-filled hollow-core fibers Download: 752次

Author Affiliations
1 College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China
2 State Key Laboratory of Pulsed Power Laser Technology, Changsha 410073, China
3 Hunan Provincial Key Laboratory of High Energy Laser Technology, Changsha 410073, China
4 Luoyang Electronic Equipment Test Center of China, Key Laboratory of Electro-Optical Countermeasures Test & Evaluation Technology, Luoyang 471003, China
Abstract
We report here on a diode-pumped pulsed mid-infrared laser source based on gas-filled hollow-core fibers (HCFs) towards an all-fiber structure by the tapering method. The pump laser is coupled into an acetylene-filled HCF through a tapered single-mode fiber. By precisely tuning the wavelength of the diode to match different absorption lines of acetylene near 1.5 μm, mid-infrared emission around 3.1–3.2 μm is generated. With 2 m HCFs and 3 mbar acetylene gas, a maximum average power of 130 mW is obtained with a laser slope efficiency of ~24%. This work provides a potential scheme for all-fiber mid-infrared fiber gas lasers.

Wei Huang, Yulong Cui, Zhiyue Zhou, Zhixian Li, Yubin Chen, Zefeng Wang. Towards all-fiber structure pulsed mid-infrared laser by gas-filled hollow-core fibers[J]. Chinese Optics Letters, 2019, 17(9): 091402.

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