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Influence of backward reflection on thermally-induced mode instability in high-power fiber amplifiers

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Abstract

Models of thermally-induced mode instability, taking the backward reflection into consideration, has been derived, and influence of backward reflection on thermally-induced mode instability has been studied numerically for the first time. Numerical results reveal that one percent of backward reflection can result in 33% reduction of mode instability threshold.

© 2021 The Author(s)

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