Observation of two-wave mixing in a single-frequency fiber amplifier induced by frequency modulation

Jakob M. Hauge*, Jens E. Pedersen, Magalie Bondu, Sidsel R. Papior, Jesper Lægsgaard

*Corresponding author for this work

Research output: Contribution to journalLetterpeer-review

Abstract

We report on the observation of unstable two-wave mixing in a Yb-doped optical fiber amplifier induced by frequency modulation of a single-frequency laser. What is believed to be a reflection of the main signal experiences a gain much higher than that provided by the optical pumping and potentially limits power scaling under frequency modulation. We propose an explanation for the effect based on the dynamic population and refractive index gratings formed by the interference between the main signal and its slightly frequency-detuned reflection.
Original languageEnglish
JournalOptics Letters
Volume47
Issue number21
Pages (from-to)5497-5500
ISSN0146-9592
DOIs
Publication statusPublished - 2022

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