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

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posted on 2021-03-17, 13:13 authored by Etienne GenierEtienne Genier
We report an octave-spanning coherent supercontinuum (SC) fiber laser with excellentnoise and polarization properties. This was achieved by pumping a highly birefringent all-normaldispersion (ANDi) photonic crystal fiber with a compact high-power ytterbium femtosecond laserat 1049 nm. This system generates an ultra-flat SC spectrum from 670 nm to 1390 nm with apower spectral density higher than 0.4 mW/nm and a polarization extinction ratio of 17 dB acrossthe entire bandwidth. An average pulse-to-pulse relative intensity noise (RIN) down to 0.54%from 700 nm to 1100 nm has been measured and found to be in good agreement with numericalsimulations. This highly-stable broadband source could find strong potential applications inbiomedical imaging and spectroscopy where improved signal to noise ratio is essential.


Horizon 2020 Framework Programme (722380)

Agence Nationale de la Recherche(ANR) (ANR-15-IDEX-0003, ANR-17-EURE-0002)


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  • France

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