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Spontaneous optomechanical pattern formation in cold atoms

Tesio, Enrico and Robb, Gordon and Ackemann, Thorsten and Firth, William and Oppo, Gian-Luca (2012) Spontaneous optomechanical pattern formation in cold atoms. Physical Review A, 86 (3). ISSN 1050-2947

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    Abstract

    Transverse pattern formation in an optical cavity containing a cloud of cold two-level atoms is discussed. We show that density modulation becomes the dominant mechanism as the atomic temperature is reduced. Indeed, for low but easily achievable temperatures the internal degrees of freedom of the atoms can be neglected, and the system is well described by treating them as linear dielectric particles. A linear stability analysis predicts the instability threshold and the spatial scale of the emergent pattern. Numerical simulations in two transverse dimensions confirm the instability and predict the spontaneous formation of honeycomb and hexagonal density structures, respectively, for the blue and red detuned cases.

    Item type: Article
    ID code: 41378
    Keywords: optical cavities, cold two-level atoms, stability analysis, Physics, Atomic and Molecular Physics, and Optics
    Subjects: Science > Physics
    Department: Faculty of Science > Physics
    Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 11 Oct 2012 14:59
    Last modified: 27 Mar 2014 22:20
    URI: http://strathprints.strath.ac.uk/id/eprint/41378

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