Single-Shot, Wavelength-Resolved Polarization Measurement of Ultrafast Lasers Based on Dispersed Division-of-Amplitude

Characterizing the state of polarization (SOP) of lasers plays an essential role in various fields, ranging from fundamental science to applications. At variance with single frequency lasers, ultrafast lasers have a much wider spectrum, due to mode-locking into ultrashort pulse trains, and recent works show that ultrafast lasers may exhibit complex wavelength-dependent polarization structures in a single pulse. Nevertheless, due to absence of measuring techniques, single-shot measurements of wavelength-resolved SOP of ultrafast lasers have, to our knowledge, rarely been reported.