Ultra_flat.pdf (623.27 kB)
Download fileAn ultra-flat, low-noise and linearly polarized fiber supercontinuum source covering 670 nm-1390 nm
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.
Funding
Horizon 2020 Framework Programme (722380)
Agence Nationale de la Recherche(ANR) (ANR-15-IDEX-0003, ANR-17-EURE-0002)
History
Email Address of Submitting Author
etge@nktphotonics.comSubmitting Author's Institution
FEMTO-STSubmitting Author's Country
- France