Time-varying polarization measurements of ultrashort pulses at 1.9 μm based on GRENOUILLE

Time-dependent polarization measurements of ultrashort pulses at $1.9 \mu \mathrm{m}$ from a thulium-doped fiber laser system adjustable with polarization controllers were demonstrated. The measurements are based on the GRENOUILLE device and the TURTLE method. By adjusting the polarization controllers of the laser system, a variety of time-polarization pulses were obtained, some of them were characterized.