Mitigation of mode instability in laser oscillators based on deuterium loading | Zendy

Yisha Chen | Zendy; Haozhen Xu | Zendy; Yingbin Xing | Zendy; Gui Chen | Zendy; Ruiting Cao | Zendy; Lei Liao | Zendy; Yibo Wang | Zendy; Haiqing Li | Zendy; Jinggang Peng | Zendy; Lüyun Yang | Zendy; Nengli Dai | Zendy; Jinyan Li | Zendy

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Mitigation of mode instability in laser oscillators based on deuterium loading

Author(s) -

Yisha Chen,

Haozhen Xu,

Yingbin Xing,

Gui Chen,

Ruiting Cao,

Lei Liao,

Yibo Wang,

Haiqing Li,

Jinggang Peng,

Lüyun Yang,

Nengli Dai,

Jinyan Li

Publication year - 2019

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.27.025964

Subject(s) - instability , deuterium , fiber laser , laser , optics , materials science , ytterbium , scaling , laser power scaling , atomic physics , physics , mechanics , geometry , mathematics

Ytterbium-doped fiber (YDF) loaded with deuterium is used herein to mitigate mode instability. Experimental results reveal that this method can increase the mode instability threshold in a laser oscillator. Specifically, when the YDF was loaded with deuterium over two- and four-week periods, the mode instability threshold power increased from ∼459 W to ∼533 W (16%) and to ∼622 W (35%), respectively, but the respective laser efficiencies were almost unaffected (71.5% vs. 72.9% and 75.4%). In conclusion, deuterium loading is effective in the mitigation of mode instability. It is envisaged to be applied in the power scaling of high-power fiber lasers.

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