Study of Wavelength Dependence of Mode Instability Based on a Semi-Analytical Model

Study of Wavelength Dependence of Mode Instability Based on a Semi-Analytical Model

We present theoretical study of wavelength dependence of mode instability (MI) in high power fiber lasers, which employs an improved semi-analytical theoretical model. The influence of pump/seed wavelength and photodarkening on threshold has been studied. The results indicate promising MI suppressio...

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Bibliographic Details
Published in:IEEE journal of quantum electronics Vol. 51; no. 8; pp. 1 - 6
Main Authors: Rumao Tao, Pengfei Ma, Xiaolin Wang, Pu Zhou, Zejin Liu
Format: Journal Article
Language:English
Published: IEEE 01-08-2015
Subjects:
Absorption
Couplings
fiber amplifier
Heating
Mode instabilities
Optical fiber amplifiers
Optical fiber theory
Photochromism
thermal effects
thermal effects
Mode instabilities
fiber amplifier
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Summary:We present theoretical study of wavelength dependence of mode instability (MI) in high power fiber lasers, which employs an improved semi-analytical theoretical model. The influence of pump/seed wavelength and photodarkening on threshold has been studied. The results indicate promising MI suppression through pumping or seeding at an appropriate wavelength. Small amounts of photodarkening can lead to a significant impact on MI.
ISSN:0018-9197
1558-1713
DOI:10.1109/JQE.2015.2442760