Abstract
We demonstrate experimentally that chirping of broadband 15-fs pulses has drastic effects on the differential transmission (DT) response of bulk semiconductors for excitation well above the bandgap (see inset of Fig. 1). In particular, the rise and the initial fast decay of the spectrally integrated (SI) DT response and the shape of DT spectra are modified by chirp in an unexpected way. These new results have an impact on both fundamental studies and ultrafast switching applications as, e.g., mode locking of solid-state lasers.1
© 1998 Optical Society of America
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