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Short-Term and Long-Term Stability in Ytterbium-Doped High-Power Fiber Lasers and Amplifiers

Research output: Contribution to journalReview ArticleScientificpeer-review

Details

Original languageEnglish
Article number6762841
JournalIEEE Journal of Selected Topics in Quantum Electronics
Volume20
Issue number5
DOIs
Publication statusPublished - 1 Sep 2014
Publication typeA2 Review article in a scientific journal

Abstract

In this paper we discuss recent progress in exploring short-term and long-term stability of high power Yb-doped fiber lasers and amplifiers. Long-term stability is associated with photodarkening effects that can significantly reduce operational lifetime of a high-power laser system. Short-term stability is associated with so-called transverse modal instabilities that degrade output beam quality at average powers above a certain threshold. In this paper we review ongoing studies that provide experimental characterization, and explore physical causes and mitigation strategies of the different physical phenomena involved. Those studies are critical for achieving stable operation of high power fiber lasers.

Keywords

  • Fiber amplifiers, fiber lasers, high-power, large-mode-area (LMA), mode instability, photodarkening (PD), transverse mode instability, ytterbium-doped