Abstract
Spectrally resolved autocorrelation traces of ultra-broadband (730 to 1250 nm) pulses generated by dispersive induced-phase modulation (IPM) and self-phase modulation in a single-mode fused-silica fiber were measured. From these measurements, effective discontinuities in group delay and group-delay dispersion in the overlapping spectral region of two input pulses owing to the IPM effect were found. Not only conventional nonlinear-chirp compensation, but also frequency-independent group-delay adjustment, both of which are essential for pulse compression of ultra-broadband femtosecond pulses generated by IPM, were experimentally demonstrated using a pulse shaper with a spatial light-phase modulator of 648 pixels.
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