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Wide class of new fractal light sources [Invited plenary paper]

McDonald, GS, Christian, JM and Huang, JG 2008, Wide class of new fractal light sources [Invited plenary paper] , in: Advanced Optoelectronics and Lasers (CAOL), 2010 International Conference , 29 Sept - 4 Oct, 2008, Alushta, Crimea, Ukraine.

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    Abstract

    Pattern emergence in Naturepsilas complex systems is mostly attributed to a classic Turing instability. There, a single length-scale becomes dominant and this defines a simple emergent structure (for example, a striped or hexagonal pattern). We have investigated whether a multi-Turing instability may result in another universal type of pattern: fractals. Fractals possess proportional levels of detail across decades of length-scale, and are thus inherently scale-less. Here, we make the first predictions of spontaneous spatial fractal patterns in nonlinear ring cavities. This will include the first reported spatial optical fractals arising from purely-absorptive nonlinearity. Analyses reveal characteristic (multi-Turing) spectral features for both dispersive and absorptive cavities. Simulations verify and quantify the fractal properties of the spontaneously-patterned light. Our findings greatly widen the scope for potential realization and exploitation of fractal light sources. In Nature-inspired device and system architectures, such sources are likely to play a pivotal role in developments.

    Item Type: Conference or Workshop Item (Paper)
    Themes: Energy
    Media, Digital Technology and the Creative Economy
    Subjects outside of the University Themes
    Schools: Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering > Materials & Physics Research Centre
    Journal or Publication Title: Advanced Optoelectronics and Lasers, 2008. CAOL 2008. 4th International Conference
    Publisher: IEEE Xplore Digital Library
    Refereed: Yes
    Depositing User: GS McDonald
    Date Deposited: 14 Oct 2011 09:17
    Last Modified: 20 Aug 2013 18:13
    URI: http://usir.salford.ac.uk/id/eprint/18294

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