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A 2D chiral microcavity based on apparent circular dichroism

Author

Listed:
  • Tzu-Ling Chen

    (University of Wisconsin-Madison
    National Yang Ming Chiao Tung University)

  • Andrew Salij

    (Northwestern University)

  • Katherine A. Parrish

    (University of Wisconsin-Madison)

  • Julia K. Rasch

    (University of Wisconsin-Madison)

  • Francesco Zinna

    (Università di Pisa)

  • Paige J. Brown

    (Northwestern University)

  • Gennaro Pescitelli

    (Università di Pisa)

  • Francesco Urraci

    (Università di Pisa)

  • Laura A. Aronica

    (Università di Pisa)

  • Abitha Dhavamani

    (University of Wisconsin-Madison)

  • Michael S. Arnold

    (University of Wisconsin-Madison)

  • Michael R. Wasielewski

    (Northwestern University)

  • Lorenzo Bari

    (Università di Pisa)

  • Roel Tempelaar

    (Northwestern University)

  • Randall H. Goldsmith

    (University of Wisconsin-Madison)

Abstract

Engineering asymmetric transmission between left-handed and right-handed circularly polarized light in planar Fabry–Pérot (FP) microcavities would enable a variety of chiral light-matter phenomena, with applications in spintronics, polaritonics, and chiral lasing. Such symmetry breaking, however, generally requires Faraday rotators or nanofabricated polarization-preserving mirrors. We present a simple solution requiring no nanofabrication to induce asymmetric transmission in FP microcavities, preserving low mode volumes by embedding organic thin films exhibiting apparent circular dichroism (ACD); an optical phenomenon based on 2D chirality. Importantly, ACD interactions are opposite for counter-propagating light. Consequently, we demonstrated asymmetric transmission of cavity modes over an order of magnitude larger than that of the isolated thin film. Through circular dichroism spectroscopy, Mueller matrix ellipsometry, and simulation using theoretical scattering matrix methods, we characterize the spatial, spectral, and angular chiroptical responses of this 2D chiral microcavity.

Suggested Citation

  • Tzu-Ling Chen & Andrew Salij & Katherine A. Parrish & Julia K. Rasch & Francesco Zinna & Paige J. Brown & Gennaro Pescitelli & Francesco Urraci & Laura A. Aronica & Abitha Dhavamani & Michael S. Arnol, 2024. "A 2D chiral microcavity based on apparent circular dichroism," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-47411-4
    DOI: 10.1038/s41467-024-47411-4
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    1. Andrew H. Salij & Randall H. Goldsmith & Roel Tempelaar, 2024. "Theory predicts 2D chiral polaritons based on achiral Fabry–Pérot cavities using apparent circular dichroism," Nature Communications, Nature, vol. 15(1), pages 1-12, December.
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