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Opt Express. 2009 Aug 3;17(16):14023-8.

Wide-time-range spectral-shearing interferometry.

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  • 1Institute for Laser Science, the University of Electro-Communications Chofu, Tokyo 182-8585 Japan.


A long-time-range spectral-shearing interferometry has been demonstrated by frequency mixing with two-color monochromatic fields. Strongly chirped pulses with quadratic and cubic phase distortion have been characterized. A linearly chirped pulse having 2.2 ps (full duration of 6 ps) has been measured with a coaxial two-color field generated by a narrow-gap passive etalon. Substantial extensions in the time range can be expected with a highly coherent two-color source, i.e., frequency stabilized lasers, or two longitudinal modes in the frequency comb.

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