Watt-level gain-switched fiber laser at 3.46 μm

被引：51

作者：

Luo, Hongyu ^{[1
]}

Yang, Jian ^{[1
]}

Liu, Fei ^{[1
]}

Hu, Zhu ^{[1
]}

Xu, Yao ^{[1
]}

Yan, Fei ^{[1
]}

Peng, Hanlin ^{[1
]}

Ouellette, Francois ^{[2
]}

Li, Jianfeng ^{[1
]}

Liu, Yong ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Sch Optoelect Sci & Engn, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Sichuan, Peoples R China

[2] Chengdu Univ, Coll Informat Sci & Engn, Chengdu 130012, Sichuan, Peoples R China

来源：

OPTICS EXPRESS | 2019年 / 27卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Double cladding - High-power pulse - Laser quenching - Mid-infrared range - Passively Q-switched - Pump pulse width - Pumping schemes - Repetition rate;

D O I：

10.1364/OE.27.001367

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate a gain-switched fiber laser, yielding a maximum average power of 1.04 W at 3.46 mu m, which is the current record of a pulsed rare-earth-doped fiber laser at the wavelength beyond 3 mu m, to our knowledge. The corresponding pulse energy is 10.4 mu J with a repetition rate of 100 kHz. A dual-wavelength pumping scheme consisting of a home-made 1950 nm passively Q-switched fiber laser system with a mu s-scale pulse width. A 976 nm continuous wave laser diode was used to gain-switch a double-cladding Er-doped ZBLAN fiber laser cavity. Possible laser-quenching behavior during a single-pump pulse was circumvented for the moderate pump peak power and relatively large-pump pulse width. Synchronous gain-switched pulses were achieved with a tunable repetition rate at a wide range of 55 similar to 120 kHz, which is the highest gain-switching repetition rate at this band and only limited by our pulsed-pump source. Moreover, the significance of pump pulse width for repetition rate improvement is also discussed. These results provide an available way to produce high-power pulses at the mid-infrared range of 3 similar to 5 mu m. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：1367 / 1375

页数：9

共 26 条

[21] Mid-IR difference frequency laser-based sensors for ambient CH4, CO, and N2O monitoring [J].