Simultaneous Characterization of Two Ultrashort Optical Pulses at Different Frequencies Using a WS₂ Monolayer.

ABSTRACT: The precise characterization of ultrashort laser pulses has been of interest to the scientific community for many years. Frequency-resolved optical gating (FROG) has been extensively used to retrieve the temporal and spectral field distributions of ultrashort laser pulses. In this work, we exploit the high, broad-band nonlinear optical response of a WS₂ monolayer to simultaneously characterize two ultrashort laser pulses with different frequencies. The relaxed phase-matching conditions in a WS₂ monolayer enable the simultaneous acquisition of the spectra resulting from both four-wave mixing (FWM) and sum-frequency generation (SFG) nonlinear processes while varying the time delay between the two ultrashort pulses. Next, we introduce an adjusted double-blind FROG algori

SUBMITTER: Noordam ML 

PROVIDER: S-EPMC9204806 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature