Assessment of the spectral interference method applied to the stretching measurement of diffused laser pulses

摘要

The spatial spectral interference (SSI) technique is used in order to characterize diffused femtosecond laser pulses and to verify the validity of a new spectral ballistic imaging technique recently proposed. Time-spectrum transform methods are assessed for the duration lengthening measurement of low (snake photons) and forward diffused pulses. Results are shown for water/milk samples in the range of 0.38-2.3 MFP. The discussion is based on the comparison with the non-linear cross-correlation time measurement of pulses. An incoherent source is used in order to confirm the results on a broader spectral range.