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Chaotic dynamics induced by coulomb coupling and optomechanical nonlinearity in a ring cavity

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  • Kong, Weizheng
  • Liu, Liwei
  • Song, Baowei
  • Zhang, Guoheng
  • Chen, Qiong
  • Shi, Yuqing

Abstract

This study investigates the regulation of chaotic dynamics in a ring cavity optomechanical system, focusing on the effects of Coulomb coupling on its dynamical behavior. Using bifurcation diagrams, Lyapunov exponents, and numerical simulations, we systematically characterize the nonlinear evolution under varying coupling strengths. Results demonstrate that Coulomb coupling lowers the chaos threshold power through enhanced inter-oscillator energy transfer. Notably, at sufficiently high Coulomb coupling strengths, the chaotic threshold power can be reduced by an order of magnitude. Furthermore, Coulomb coupling disrupts the resonant symmetry of the mechanical oscillators, resulting in complexified phase-space trajectories. This research elucidates the physical mechanism by which Coulomb coupling enhances optomechanical chaos. It broadens the theoretical framework for nonlinear cavity optomechanics and provides foundations for designing low-power-consumption random number generators and chaotic light sources, demonstrating potential for multiphysics cooperative control in micro/nano optoelectromechanical systems.

Suggested Citation

  • Kong, Weizheng & Liu, Liwei & Song, Baowei & Zhang, Guoheng & Chen, Qiong & Shi, Yuqing, 2026. "Chaotic dynamics induced by coulomb coupling and optomechanical nonlinearity in a ring cavity," Chaos, Solitons & Fractals, Elsevier, vol. 202(P2).
    • Handle: RePEc:eee:chsofr:v:202:y:2026:i:p2:s0960077925015796
    DOI: 10.1016/j.chaos.2025.117566
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    References listed on IDEAS

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    1. Jiagui Wu & Shu-Wei Huang & Yongjun Huang & Hao Zhou & Jinghui Yang & Jia-Ming Liu & Mingbin Yu & Guoqiang Lo & Dim-Lee Kwong & Shukai Duan & Chee Wei Wong, 2017. "Mesoscopic chaos mediated by Drude electron-hole plasma in silicon optomechanical oscillators," Nature Communications, Nature, vol. 8(1), pages 1-7, August.
    2. Chogle, Firoz & Varghese, Seba Sara & Ibrahim, Abdel-Baset M.A. & Prasad, Awadhesh & Eleuch, Hichem, 2024. "Chaos and regularities in cavity assisted two-channel nonlinear coupler," Chaos, Solitons & Fractals, Elsevier, vol. 189(P1).
    3. Stefan Blien & Patrick Steger & Niklas Hüttner & Richard Graaf & Andreas K. Hüttel, 2020. "Quantum capacitance mediated carbon nanotube optomechanics," Nature Communications, Nature, vol. 11(1), pages 1-6, December.
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