Transverse mode competition in gain-guided index antiguided fiber lasers

    Authors

    X. R. Wang; Y. Chen; W. Hageman; G. U. Kim; M. Richardson; C. D. Xiong; J. Ballato;M. Bass

    Comments

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    Abbreviated Journal Title

    J. Opt. Soc. Am. B-Opt. Phys.

    Keywords

    SINGLE-MODE; LARGE-CORE; Optics

    Abstract

    Single-mode laser action has been reported previously in a gain-guided, index antiguided fiber using a scalable side pumping scheme. In this paper we demonstrate the role of transverse mode competition on laser oscillation in such a fiber laser. It enables single, lowest-order mode lasing with a beam quality of M-2 < 2 when using a combination of large fiber core radius and low output coupler reflectivity previously considered to rule out gain-guided index antiguided lasing with such beam quality. In addition, the larger core radii fibers and low output coupler reflectivity enables improved slope efficiency. Both theoretical analysis and experimental results are presented demonstrating mode competition governed lasing in a gain-guided, index antiguided fiber. c (C) 2012 Optical Society of America

    Journal Title

    Journal of the Optical Society of America B-Optical Physics

    Volume

    29

    Issue/Number

    2

    Publication Date

    1-1-2012

    Document Type

    Article

    Language

    English

    First Page

    191

    Last Page

    196

    WOS Identifier

    WOS:000300407300020

    ISSN

    0740-3224

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