Efficient power scaling of laser radiation by spectral beam combining

    Authors

    A. Sevian; O. Andrusyak; I. Ciapurin; V. Smirnov; G. Venus;L. Glebov

    Comments

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    Abbreviated Journal Title

    Opt. Lett.

    Keywords

    FIBER LASERS; Optics

    Abstract

    The possibility of achieving multikilowatt laser radiation by spectrally combining beams using volume Bragg gratings (VBGs) is shown. The VBGs recorded in a photothermorefractive glass exhibit long-term stability of all its parameters in high-power laser beams with power density > 1 MW/cm(2) in the cw beam of total power on a kilowatt level. We consider an architecture-specific beam-combining scheme and address the cross-talk minimization problem based on optimal channel positioning. Five-channel high efficiency spectral beam combining resulted in a > 750 W near-diffraction-limited cw beam has been demonstrated experimentally. (C) 2008 Optical Society of America.

    Journal Title

    Optics Letters

    Volume

    33

    Issue/Number

    4

    Publication Date

    1-1-2008

    Document Type

    Article

    Language

    English

    First Page

    384

    Last Page

    386

    WOS Identifier

    WOS:000254182300029

    ISSN

    0146-9592

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