Ultrafast Dy 3+ :fluoride fiber laser beyond 3 μm

We report a passively mode-locked Dy :fluoride fiber laser emitting around 3.1 μm based on the nonlinear polarization evolution technique in a ring configuration, using in-band pumping at 2.8 μm. Transform-limited and self-starting mode-locked pulses as short as 828 fs with a center wavelength aroun...

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Bibliographic Details
Published in:Optics letters 2019-01, Vol.44 (2), p.395
Main Authors: Wang, Yuchen, Jobin, Frédéric, Duval, Simon, Fortin, Vincent, Laporta, Paolo, Bernier, Martin, Galzerano, Gianluca, Vallée, Réal
Format: Article
Language:English
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Summary:We report a passively mode-locked Dy :fluoride fiber laser emitting around 3.1 μm based on the nonlinear polarization evolution technique in a ring configuration, using in-band pumping at 2.8 μm. Transform-limited and self-starting mode-locked pulses as short as 828 fs with a center wavelength around 3.1 μm and repetition rates up to 60 MHz are obtained. In the single-pulse regime, a maximum average output power of 204 mW is measured, corresponding to a peak power of 4.2 kW and a pulse energy of 4.8 nJ. This first demonstration, to the best of our knowledge, of a femtosecond mode-locked fiber laser emitting directly beyond 3 μm paves the way for frequency comb synthesis in the molecular fingerprint region.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.44.000395