Applied Physics Letters

All-optical ultrafast tunable linear absorption with a VO2 based metamaterial

Y Yael Gutiérrez (Departamento de Física Aplicada, Universidad de Cantabria 1 , Avenida de los Castros, s/n, 39005 Santander,) S Saul Vazquez-Miranda (ELI Beamlines Facility, The Extreme Light Infrastructure ERIC 1 , Za Radnicí 835, 25241 Dolní Břežany,) M Mateusz Rebarz (ELI Beamlines Facility, The Extreme Light Infrastructure ERIC 2 , Za Radnicí 835, 25241 Dolní Břežany,) S Shirly Espinoza (ELI Beamlines Facility, The Extreme Light Infrastructure ERIC 1 , Za Radnicí 835, 25241 Dolní Břežany,) H Helmut Karl (Lehrstuhl für Experimentalphysik IV, Universität Augsburg 3 , 86159 Augsburg,) J José M. Saiz (Departamento de Física Aplicada, Universidad de Cantabria 1 , Avenida de los Castros, s/n, 39005 Santander,) S Sebastien Cueff (Université Lyon, Ecole Centrale de Lyon, CNRS, INSA Lyon, Université Claude Bernard Lyon 1, CPE Lyon, CNRS, INL, UMR5270 4 , 69130 Ecully,)

Abstract

The phase-dependent plasmonic response of a metamaterial platform composed of VO2 nanocrystals (NCs) embedded in an SiO2 matrix was investigated using ultrafast time-resolved spectroscopic ellipsometry. Localized surface plasmon resonances (LSPR) emerged upon excitation with 35 fs laser pulses at λ = 500 nm, which triggered the insulator-to-metal transition in the VO2 NCs. The study reveals the ultrafast dynamics mapped at the LSPR underlying the photoinduced optical tunability of the system, highlighting the potential of VO2 NCs for reconfigurable photonic applications such as tunable linear switching.

Download PDF View Original
APA MLA Chicago BibTeX RIS

Article Details

Volume / Issue Vol. 128, Issue 20
Published May 18, 2026
ISSN 0003-6951
Publisher American Institute of Physics

Journal Info

Applied Physics Letters

American Institute of Physics
ISSN: 0003-6951 Physical Sciences

Authors (7)

Y

Yael Gutiérrez

Departamento de Física Aplicada, Universidad de Cantabria 1 , Avenida de los Castros, s/n, 39005 Santander,

S

Saul Vazquez-Miranda

ELI Beamlines Facility, The Extreme Light Infrastructure ERIC 1 , Za Radnicí 835, 25241 Dolní Břežany,

M

Mateusz Rebarz

ELI Beamlines Facility, The Extreme Light Infrastructure ERIC 2 , Za Radnicí 835, 25241 Dolní Břežany,

S

Shirly Espinoza

ELI Beamlines Facility, The Extreme Light Infrastructure ERIC 1 , Za Radnicí 835, 25241 Dolní Břežany,

H

Helmut Karl

Lehrstuhl für Experimentalphysik IV, Universität Augsburg 3 , 86159 Augsburg,

J

José M. Saiz

Departamento de Física Aplicada, Universidad de Cantabria 1 , Avenida de los Castros, s/n, 39005 Santander,

S

Sebastien Cueff

Université Lyon, Ecole Centrale de Lyon, CNRS, INSA Lyon, Université Claude Bernard Lyon 1, CPE Lyon, CNRS, INL, UMR5270 4 , 69130 Ecully,

Related Articles from this Journal

Interface engineering with an rGO electron extraction layer for high-efficiency and stable Cu2ZnSnS4-based photocathode

Zhenyan Xiao, Piao Zhang et al. Aug 2026 10.1063/5.0312010

Transmission diffuse EUV scattering by nanoscale Lamb waves in thin membranes

Alessandra Milloch, Naman Agarwal et al. Aug 2026 10.1063/5.0343558

Optimized Nb-doped SnO2 buffer layer for enhanced carrier extraction and Sb2S3 photovoltaic responses

Xinsheng Liu, Xiangyang Liu et al. Aug 2026 10.1063/5.0343471

Exceptionally high thermoelectric power factors at low temperatures in heavily doped p- and n-type Ge-rich Ge1−xSnx films

Masashi Kurosawa, Takayoshi Katase et al. Aug 2026 10.1063/5.0346412

Unlocking room-temperature magnetoelectricity in Ba1.5Sr1.5-based Z-type hexaferrites via magnetic anisotropy modulation

Huantong Wu, Jun Li et al. Aug 2026 10.1063/5.0314711