Cross-correlation frequency-resolved optical gating by molecular alignment for ultraviolet femtosecond pulse measurement

摘要: We experimentally demonstrate a molecular-alignment-based cross-correlation frequency-resolved optical gating technique for ultraviolet femtosecond pulse measurement, which use laser-induced impulsive alignment of gaseous molecules as the gate function instead phase-matched frequency mixing process in nonlinear crystal. The spectrogram measurements and retrieving results intensity phase second third harmonic pulses centered at 400 267 nm are presented.