Spatially resolved measurement of femtosecond laser induced refractive index changes in transparent materials

    Authors

    R. Berlich; J. Choi; C. Mazuir; W. V. Schoenfeld; S. Nolte;M. Richardson

    Comments

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    Abbreviated Journal Title

    Opt. Lett.

    Keywords

    DIFFRACTIVE OPTICAL-ELEMENTS; WAVE-GUIDES; GLASS; PHOTOSENSITIVITY; Optics

    Abstract

    We present a practical method to determine femtosecond laser induced refractive index changes in transparent materials. Based on an iterative Fourier transform algorithm, this technique spatially resolves the refractive index of complex structures by combining the dimensions of the modified region with the corresponding phase change extracted from far-field intensity measurements. This approach is used to characterize optical waveguides written by a femtosecond laser in borosilicate glass. (C) 2012 Optical Society of America

    Journal Title

    Optics Letters

    Volume

    37

    Issue/Number

    14

    Publication Date

    1-1-2012

    Document Type

    Article

    Language

    English

    First Page

    3003

    Last Page

    3005

    WOS Identifier

    WOS:000306709900078

    ISSN

    0146-9592

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