Abstract
Self-referenced spectral interferometry (SRSI) is a recently demonstrated single-shot characterization technique [1]. This technique relies on the spectral interference between the pulse to characterize and a reference pulse generated from the pulse itself by cross-polarized wave generation (XPW)[2]. Under the right experimental conditions, the XPW pulse is shorter than the input pulse and exhibits a broader and smoother spectrum with a flat, or at least computable, spectral phase. Such properties are highly favorable for high-dynamic range spectral interferometry and high-contrast SRSI measurements have recently been demonstrated [3]. In this paper, we show the ability to optimize pulses down to 11.7 fs at their Fourier limit using feedback loops between a pulse shaper and the SRSI device.
© 2011 Optical Society of America
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