Time-frequency imaging of a single ultrashort light pulse from angularly resolved autocorrelation

A new technique to measure the frequency-resolved temporal image of a single ultrashort light pulse is presented. This technique is based on a single-shot self-diffraction autocorrelator in which the pulse duration is related to the spatial width of a diffracted beam, the pulse spectrum is related t...

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Bibliographic Details
Published in:Optics letters 1995-06, Vol.20 (11), p.1301-1303
Main Authors: Kabelka, V, Masalov, A V
Format: Article
Language:English
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Summary:A new technique to measure the frequency-resolved temporal image of a single ultrashort light pulse is presented. This technique is based on a single-shot self-diffraction autocorrelator in which the pulse duration is related to the spatial width of a diffracted beam, the pulse spectrum is related to its divergence, and the pulse chirp appears as a curvature of the diffracted-beam wave front. An analysis of wave-front curvature by means of a slit diaphragm and a cylindrical lens results in a time-frequency image of the initial pulse when a spectrometer is not used. This image gives a simple intuitive picture of the chirp and the phase modulation of a pulse.
ISSN:0146-9592
1539-4794
DOI:10.1364/ol.20.001301