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February 28, 2026ACS NanoOpen Access

Optical Bound States in the Continuum in Subwavelength Gratings Made of an Epitaxial van der Waals Material

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Authors

EPEmilia Pruszyńska‐KarbownikUniversity of WarsawTFTomasz FąsUniversity of WarsawKBKatarzyna BrańkoUniversity of Warsaw

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Implication

Theoretical and experimental work demonstrates enhanced third-harmonic generation in MoSe2 gratings, suggesting new photonic applications.

Key Points

  • The aim is to investigate the optical properties of subwavelength gratings made from epitaxial MoSe2.
  • Designed optical structures using theoretical calculations.
  • Fabricated ultrathin subwavelength gratings using a simple lithography process.
  • Conducted polarization-resolved reflectivity measurements.
  • Confirmed the presence of bound states in the continuum in the designed gratings.
  • Achieved over 3 orders of magnitude enhancement in third-harmonic generation compared to unstructured MoSe2.

Cite This Study

Pruszyńska‐Karbownik et al. (2026) studied this question.

synapsesocial.com/papers/69a287010a974eb0d3c025a8https://doi.org/10.1021/acsnano.5c12870
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