Ultrathin plasmonic films and time-dependent quadratic nonlinearity

Anton Y. Bykov; Jingyi Wu; Anastasiia Zaleska; Alexey V. Krasavin; Anatoly V. Zayats

doi:10.1117/12.3028573

3 October 2024 Ultrathin plasmonic films and time-dependent quadratic nonlinearity

Anton Y. Bykov, Jingyi Wu, Anastasiia Zaleska, Alexey V. Krasavin, Anatoly V. Zayats

Author Affiliations +

Proceedings Volume PC13111, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XXII; PC131110Q (2024) https://doi.org/10.1117/12.3028573
Event: Nanoscience + Engineering, 2024, San Diego, California, United States

Abstract

Ultrafast nonlinearity which results in modulation of linear optical response is a basis for development of time-varying media, in particular those operating in the epsilon-near-zero regime. Here, we demonstrate that the intraband excitation of hot electrons in the epsilon-near-zero media results in the strong second-harmonic modification while the changes in linear transmission are negligible. We also show that nonlinear response of anisotropic epsilon-near-zero materials can be controlled by coupling to vibrational modes and influences the polarisation of the reflected light.

Conference Presentation

Citation Download Citation

Anton Y. Bykov, Jingyi Wu, Anastasiia Zaleska, Alexey V. Krasavin, and Anatoly V. Zayats "Ultrathin plasmonic films and time-dependent quadratic nonlinearity", Proc. SPIE PC13111, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XXII, PC131110Q (3 October 2024); https://doi.org/10.1117/12.3028573

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