Epsilon-near-zero nonlinearity enhancement in the extreme ultraviolet

Carino Ferrante; Emiliano Principi; Luca Assogna; Ambaresh Sahoo; Giovanni Batignani; Giuseppe Fumero; Laura Foglia; Riccardo Mincigrucci; Luca Giannessi; Tullio Scopigno; Claudio Masciovecchio; Andrea Marini

doi:10.1038/s41377-025-01985-w

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Epsilon-near-zero nonlinearity enhancement in the extreme ultraviolet

Original Articles

- Epsilon-near-zero nonlinearity enhancement in the extreme ultraviolet
- Epsilon-near-zero nonlinearity enhancement in the extreme ultraviolet
- Light: Science & Applications 2025年14卷第12期页码：4020-4027
- Affiliations：
  
  1.CNR-SPIN, c/o Dip.to di Scienze Fisiche e Chimiche - Via Vetoio, L’Aquila, Italy
  2.Elettra-Sincrotrone Trieste S.C.p.A., Trieste, Italy
  3.Dipartimento di Scienze Fisiche e Chimiche, Università degli Studi dell’Aquila, L’Aquila, Italy
  4.Dipartimento di Fisica, Università di Roma “La Sapienza”, Roma, Italy
  5.Graphene Labs, Istituto Italiano di Tecnologia, Genova, Italy
  6.Associate, Nanoscale Device Characterization Division, National Institute of Standards and Technology, Gaithersburg, MD, USA
  7.Department of Physics and Astronomy, West Virginia University, Morgantown, WV, USA
  8.INFN Laboratori Nazionali di Frascati, Frascati (Rome), Italy
- Author bio：
  
  Carino Ferrante (carino.ferrante@spin.cnr.it)
  Andrea Marini (andrea.marini@univaq.it)
- Funds：
- DOI：10.1038/s41377-025-01985-w
  中图分类号：
- 收稿：2025-02-03，
  
  修回：2025-07-18，
  
  录用：2025-07-23，
  
  网络出版：2025-10-27，
  
  纸质出版：2025-12-31
- Accepted：
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Carino Ferrante, Emiliano Principi, Luca Assogna, 等. Epsilon-near-zero nonlinearity enhancement in the extreme ultraviolet[J]. Light: Science & Applications, 2025,14(12):4020-4027.

Ferrante, C. et al. Epsilon-near-zero nonlinearity enhancement in the extreme ultraviolet. Light: Science & Applications, 14, 4020-4027 (2025).
Carino Ferrante, Emiliano Principi, Luca Assogna, 等. Epsilon-near-zero nonlinearity enhancement in the extreme ultraviolet[J]. Light: Science & Applications, 2025,14(12):4020-4027. DOI： 10.1038/s41377-025-01985-w.

Ferrante, C. et al. Epsilon-near-zero nonlinearity enhancement in the extreme ultraviolet. Light: Science & Applications, 14, 4020-4027 (2025). DOI： 10.1038/s41377-025-01985-w.

摘要

Abstract

Materials with a vanishing dielectric constant provide an ideal platform for achieving plasmon-enhanced light-matter interactions and are widely employed in various cutting-edge nonlinear photonics applications. In this study

we present the first experimental demonstration of extreme ultraviolet (XUV) plasmon-enhanced self-driven spectral modification using a submicrometric foil of aluminium. This is achieved through the excitation of widely tunable Ferrell-Berreman epsilon-n

ear-zero resonances with extremely low absorption. Our angle-dependent measurements of spectral modulation enhancement

supported by theoretical analysis

reveal efficient spectral modification at peak intensities as low as 380 GW/cm

which we attribute to ultrafast heating and saturation effects. These findings mark a breakthrough in the enhancement of typically weak nonlinearities in the XUV regime through nonlinear plasmonics

potentially paving the way for unprecedented tools for the manipulation and control of XUV radiation.

关键词

Keywords

references

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