The temporal behaviour and spectral distribution of white-light continuum generation in H2O using a focused intense 800 nm 130 fs Ti:Sapphire laser were studied.The results indicated that the white-light continuum spectrally ranged from 1000 to 400 nm,which was mainly attributed to self-phase modulation related to Kerr effect and ionization.The pulse duration of different spectral components of the generated white-light continuum,which was measured with frequency up-conversion technique,was obtained around 137 fs.It revealed a comparable time resolution as the original laser pulse.
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