Journal
OPTICS LETTERS
Volume 31, Issue 13, Pages 2063-2065Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.31.002063
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We present a new method for measuring the spectral phase of ultrashort pulses that utilizes spectral shearing interferometry with zero delay. Unlike conventional spectral phase interferometry for direct electric-field reconstruction, which encodes phase as a sensitively calibrated fringe in the spectral domain, two-dimensional spectral shearing interferometry robustly encodes phase along a second dimension. This greatly reduces demands on the spectrometer and allows for complex phase spectra to be measured over extremely large bandwidths, potentially exceeding 1.5 octaves. (c) 2006 Optical Society of America.
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