Thermal control of polarization of light with nonlocal plasmonic anisotropic metamaterials

TY - JOUR

T1 - Thermal control of polarization of light with nonlocal plasmonic anisotropic metamaterials

AU - Wu, Jingyi

AU - Bykov, Anton

AU - Krasavin, Alexey

AU - Nasir, Mazhar

AU - Zayats, Anatoly

N1 - Funding Information: This work was supported by the ERC iCOMM project (No. 789340) and the UK EPSRC Project No. EP/W017075/1. Publisher Copyright: © 2023 Author(s).

PY - 2023/10/23

Y1 - 2023/10/23

N2 - Plasmonic nanostructures have demonstrated significant potential for engineering the intensity and polarization state of light with further opportunities to actively manipulate them by external stimulation using nonlinear effects. Plasmonic metamaterials composed of arrays of vertically oriented metallic nanorods have shown a dynamically tunable optical response based on the change of the electron temperature. The modulation of the optical properties is particularly pronounced in the epsilon-near-zero regime and can be further enhanced by nonlocal effects. Here, we experimentally study the optical properties of gold nanorod metamaterials with a strong nonlocal response under optically-induced heating, exploiting temperature dependence of the metal permittivity. Recovering the Stokes parameters of light transmitted through the metamaterial, we demonstrate the change in the polarization of the transmitted light by more than 20% for temperature changes under hundred degrees. Combined with a numerical analysis, this shows the possibility of controlling transmission and polarization state of light by using metamaterial-assisted thermal modulation.

AB - Plasmonic nanostructures have demonstrated significant potential for engineering the intensity and polarization state of light with further opportunities to actively manipulate them by external stimulation using nonlinear effects. Plasmonic metamaterials composed of arrays of vertically oriented metallic nanorods have shown a dynamically tunable optical response based on the change of the electron temperature. The modulation of the optical properties is particularly pronounced in the epsilon-near-zero regime and can be further enhanced by nonlocal effects. Here, we experimentally study the optical properties of gold nanorod metamaterials with a strong nonlocal response under optically-induced heating, exploiting temperature dependence of the metal permittivity. Recovering the Stokes parameters of light transmitted through the metamaterial, we demonstrate the change in the polarization of the transmitted light by more than 20% for temperature changes under hundred degrees. Combined with a numerical analysis, this shows the possibility of controlling transmission and polarization state of light by using metamaterial-assisted thermal modulation.

UR - http://www.scopus.com/inward/record.url?scp=85175232278&partnerID=8YFLogxK

U2 - 10.1063/5.0171298

DO - 10.1063/5.0171298

M3 - Article

SN - 0003-6951

VL - 123

SP - 171701

JO - APPLIED PHYSICS LETTERS

JF - APPLIED PHYSICS LETTERS

IS - 17

M1 - 171701

ER -