Cross-correlation technique for dispersion characterization of chirped volume Bragg gratings

    Authors

    O. Andrusyak; L. Canioni; I. Cohanoschi; E. Rotari; V. Smirnov; G. Venus;L. Glebov

    Comments

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    Abbreviated Journal Title

    Appl. Optics

    Keywords

    ULTRASHORT PULSES; PHASE; LASER; COMPRESSION; FIBERS; CAVITY; Optics

    Abstract

    We propose using cross-correlation frequency-resolved optical gating for dispersion characterization of optical elements with high dispersion, such as ultrashort pulse stretchers and compressors. The technique is based on spectrally resolved second-order cross correlation (sum frequency generation) of a stretched pulse with a reference short pulse. Dispersion of optical elements with a high pulse stretching ratio can be completely characterized using this method, even with moderate resolution of spectral measurements of the cross-correlation signal. The proposed technique is used to measure dispersion of a chirped Bragg grating recorded in photo-thermo-refractive glass. It was found that dispersion of these gratings is almost linear with wavelength and has approximately the same slope with opposite signs for two orientations of the grating with opposite faces of the grating used as the input face. Analysis of higher-order dispersion of the grating shows some variations of dispersion across the aperture of the grating, mostly in the amount of third-order dispersion contribution. (C) 2009 Optical Society of America

    Journal Title

    Applied Optics

    Volume

    48

    Issue/Number

    30

    Publication Date

    1-1-2009

    Document Type

    Article

    Language

    English

    First Page

    5786

    Last Page

    5792

    WOS Identifier

    WOS:000271373900022

    ISSN

    1559-128X

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