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Light focusing in the Anderson regime

Author

Listed:
  • Marco Leonetti

    (University of Rome La Sapienza
    Center for Life Nano Science @Sapienza, Istituto Italiano di Tecnologia)

  • Salman Karbasi

    (University of Wisconsin–Milwaukee)

  • Arash Mafi

    (University of Wisconsin–Milwaukee)

  • Claudio Conti

    (University Sapienza)

Abstract

Anderson localization is a regime in which diffusion is inhibited and waves (also electromagnetic waves) get localized. Here we exploit adaptive optics to achieve focusing in disordered optical fibres in the Anderson regime. By wavefront shaping and optimization, we observe the generation of a propagation-invariant beam, where light is trapped transversally by disorder, and show that Anderson localizations can be also excited by extended speckled beams. We demonstrate that disordered fibres allow a more efficient focusing action with respect to standard fibres in a way independent of their length, because of the propagation-invariant features and cooperative action of transverse localizations.

Suggested Citation

  • Marco Leonetti & Salman Karbasi & Arash Mafi & Claudio Conti, 2014. "Light focusing in the Anderson regime," Nature Communications, Nature, vol. 5(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5534
    DOI: 10.1038/ncomms5534
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