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September 23, 2025Light Science & ApplicationsOpen Access

Second and third harmonic generation in topological insulator-based van der Waals metamaterials

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Authors

AGAlessandra Di GaspareRoma Tre UniversitySZSara Ghayeb ZamharirScuola Normale SuperioreCKCraig KnoxUniversity of Leeds

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Implication

Experimental findings demonstrate high-order harmonic generation using topological insulators, highlighting symmetry effects in surface states.

Key Points

  • HHG achieved in topological insulator-based metamaterials leads to significant frequency up-conversion.
  • Experimental results reveal harmonic generation in the 6.4–9.7 THz range, indicating versatility and potential applications.
  • Utilizing split ring resonators and symmetry principles enhances the generation process, enabling both odd and even harmonics.
  • This research opens pathways for innovative optical technologies leveraging unique properties of topological insulators.

Cite This Study

Gaspare et al. (2025) studied this question.

synapsesocial.com/papers/68d4724731b076d99fa6aaa9https://doi.org/10.1038/s41377-025-01847-5
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