Ultra-flat, low-noise, and linearly polarized fiber supercontinuum source covering 670-1390 nm

Etienne Genier*, Sacha Grelet, Rasmus D. Engelsholm, Patrick Bowen, Peter M. Moselund, Ole Bang, John M. Dudley, Thibaut Sylvestre

*Corresponding author for this work

    Research output: Contribution to journalJournal articleResearchpeer-review

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    Abstract

    We report an octave-spanning coherent supercontinuum (SC) fiber laser with excellent noise and polarization properties. This was achieved by pumping a highly birefringent all-normal dispersion photonic crystal fiber with a compact high-power ytterbium femtosecond laser at 1049 nm. This system generates an ultra-flat SC spectrum from 670 to 1390 nm with a power spectral density higher than 0.4 mW/nm and a polarization extinction ratio of 17 dB across the entire bandwidth. An average pulse-to-pulse relative intensity noise down to 0.54% from700 to 1100nmwas measured and found to be in good agreement with numerical simulations. This highly stable broadband source could find strong potential applications in biomedical imaging and spectroscopy where an improved signal-to-noise ratio is essential.

    Original languageEnglish
    JournalOptics Letters
    Volume46
    Issue number8
    Pages (from-to)1820-1823
    ISSN0146-9592
    DOIs
    Publication statusPublished - 15 Apr 2021

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