|Title||Ultrafast Dy:fluoride fiber laser beyond 3 μm.|
|Publication Type||Journal Article|
|Year of Publication||2019|
|Authors||Wang, Yuchen, Frédéric Jobin, Simon Duval, Vincent Fortin, Paolo Laporta, Martin Bernier, Gianluca Galzerano, and Réal Vallée|
|Date Published||2019 Jan 15|
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.
|Alternate Journal||Opt Lett|