Time-domain interferometry for direct electric-field reconstruction of mid-infrared femtosecond pulses

Abstract : Mid-infrared ultrashort pulses of 9.2-mu;m center wavelength are characterized in both amplitude and phase. This is achieved by use of a variant of spectral phase interferometry for direct electric field reconstruction in which spectral interferometry has been replaced with time-domain interferometry, a technique that is well suited for infrared pulses. The setup permits simultaneous recording of the second-order interferometric autocorrelation, thus providing an independent check on the retrieved spectral phase. Mid-infrared ultrashort pulses of 9.2-mu;m center wavelength are characterized in both amplitude and phase. This is achieved by use of a variant of spectral phase interferometry for direct electric field reconstruction in which spectral interferometry has been replaced with time-domain interferometry, a technique that is well suited for infrared pulses. The setup permits simultaneous recording of the second-order interferometric autocorrelation, thus providing an independent check on the retrieved spectral phase. Cop. 2003 Optical Society of America
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Cathie Ventalon, James-M. Raser, Manuel Joffre. Time-domain interferometry for direct electric-field reconstruction of mid-infrared femtosecond pulses. Optics Letters, Optical Society of America, 2003, 28 (19), pp.1826-1828. ⟨10.1364/OL.28.001826⟩. ⟨hal-00836883⟩

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