Coherent measurement of short laser pulses based on spectral interferometry resolved in time.
We propose a new method for measuring the phase and the amplitude of a short laser pulse that is based on shearing interferometry in the spectral domain combined with time gating. The method has several features in common with spectral interferometry for direct electric-field reconstruction, in particular, fast and direct reconstruction of the phase. Accurate measurement of the phase added to an 80-fs pulse by a block of F4 glass demonstrates the technique.
Faculte des Sciences, Institut de Recherches en Communications, Optiques et Microondes, 123 Avenue A. Thomas, 87060 Limoges, France.
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Messager
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Louradour
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Froehly
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Barthelemy