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Universality of light thermalization in multimoded nonlinear optical systems

Author

Listed:
  • Qi Zhong

    (University of Central Florida)

  • Fan O. Wu

    (University of Central Florida)

  • Absar U. Hassan

    (University of Central Florida)

  • Ramy El-Ganainy

    (Michigan Technological University
    Michigan Technological University)

  • Demetrios N. Christodoulides

    (University of Central Florida
    University of Southern California)

Abstract

Recent experimental studies in heavily multimoded nonlinear optical systems have demonstrated that the optical power evolves towards a Rayleigh–Jeans (RJ) equilibrium state. To interpret these results, the notion of wave turbulence founded on four-wave mixing models has been invoked. Quite recently, a different paradigm for dealing with this class of problems has emerged based on thermodynamic principles. In this formalism, the RJ distribution arises solely because of ergodicity. This suggests that the RJ distribution has a more general origin than was earlier thought. Here, we verify this universality hypothesis by investigating various nonlinear light-matter coupling effects in physically accessible multimode platforms. In all cases, we find that the system evolves towards a RJ equilibrium—even when the wave-mixing paradigm completely fails. These observations, not only support a thermodynamic/probabilistic interpretation of these results, but also provide the foundations to expand this thermodynamic formalism along other major disciplines in physics.

Suggested Citation

  • Qi Zhong & Fan O. Wu & Absar U. Hassan & Ramy El-Ganainy & Demetrios N. Christodoulides, 2023. "Universality of light thermalization in multimoded nonlinear optical systems," Nature Communications, Nature, vol. 14(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-35891-9
    DOI: 10.1038/s41467-023-35891-9
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    References listed on IDEAS

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    1. Martin Wimmer & Alois Regensburger & Mohammad-Ali Miri & Christoph Bersch & Demetrios N. Christodoulides & Ulf Peschel, 2015. "Observation of optical solitons in PT-symmetric lattices," Nature Communications, Nature, vol. 6(1), pages 1-9, November.
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