Ultrafast 3.5 μm fiber laser

Abstract

We report the first mode-locked fiber laser to operate in the femtosecond regime well beyond 3 μm. The laser uses dual-wavelength pumping and non-linear polarisation rotation to produce 3.5 μm wavelength pulses with minimum duration of 580 fs at a repetition rate of 68 MHz. The pulse energy is 3.2 nJ, corresponding to a peak power of 5.5 kW.

References in corpus (4)

• Mid-Infrared Frequency Comb Fourier Transform Spectrometer
• Generation of 70-fs pulses at 2.86 μm from a mid-infrared fiber laser
• Mode-locked and tunable fiber laser at the 3.5 $\mu$m band using frequency-shifted feedback
• Numerical Modeling of 3.5 micron Dual-Wavelength Pumped Erbium Doped Mid-Infrared Fiber Lasers