Polarization dependent bound states in continuum in a tetramer metasurface discovered by random forest algorithm.

Journal: Scientific reports
Published Date: Jul 31, 2025

Abstract

A tetramer metasurface with strong coupling of meta-atoms under C symmetry is proposed to realize polarization-dependent bound states in continuum (BICs) with the random forest regressor algorithm assistance. The quality (Q) factor of quasi-BIC correlates with the centralization degree of the tetramer structure, which is determined by the photonic band characteristics. The quasi-BIC is dominated by a hybrid of electric dipole and quadrupole in E polarization (Q > 10), whereas only electric dipole dominates quasi-BIC (Q > 10) in E polarization. These findings demonstrate a novel strategy to achieve ultrahigh Q-factor resonances in terahertz photonics.

Authors

  • Chenjie Jia
    Department of Physics, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, China.
  • Zhenyu Zhao
    Clinical Medical Center of Oncology, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
  • Jun Wang
    Department of Speech, Language, and Hearing Sciences and the Department of Neurology, The University of Texas at Austin, Austin, TX 78712, USA.

Keywords

No keywords available for this article.

External Resources

Popular Topics
Recent Journals