STRS in Yb-doped polarisation-maintaining fiber amplifier

Liang Dong; Fanting Kong; Roger H. Stolen

doi:10.1117/12.2588430

5 March 2021 STRS in Yb-doped polarisation-maintaining fiber amplifier

Liang Dong, Fanting Kong, Roger H. Stolen

Proceedings Volume 11665, Fiber Lasers XVIII: Technology and Systems; 116650S (2021) https://doi.org/10.1117/12.2588430
Event: SPIE LASE, 2021, Online Only

Abstract

Modal interference can lead to intensity modulations in optical fibers, which can produce refractive index gratings under the influence of quantum defect heating in a fiber laser. These gratings are perfectly phased-matched for mode couplings, which can lead to transverse mode instabilities at high average powers in fiber lasers. A detailed understanding of this process is critical for further power scaling of fiber lasers. We have directly observed and characterized this quantum-defect-assisted mode coupling for the first time using polarization modes in a PM fiber amplifier, providing solid experimental evidence for this key mechanism for transverse mode instability in fiber lasers.

Conference Presentation

Citation Download Citation

Liang Dong, Fanting Kong, and Roger H. Stolen "STRS in Yb-doped polarisation-maintaining fiber amplifier", Proc. SPIE 11665, Fiber Lasers XVIII: Technology and Systems, 116650S (5 March 2021); https://doi.org/10.1117/12.2588430

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