Terahertz Magnon-Polariton Control Using a Tunable Liquid Crystal Cavity.

ABSTRACT: Strong coupling of light to a collective spin excitation in antiferromagnets gives rise to hybrid modes called magnon-polaritons. They are highly promising for data manipulation and transfer at terahertz rates, much faster than in the case of ferromagnetic magnon-polaritons, which operate at GHz frequencies. Yet, control of terahertz magnon-polaritons by the voltage, i.e., without ohmic dissipation losses, remains challenging. Here, we showcase the ability to remotely control antiferromagnetic magnon-polaritons at room temperature using an electric field by integrating a highly birefringent liquid crystal layer into a terahertz Fabry-Perot cavity containing an antiferromagnetic crystal. Positioned several millimeters from the magnetic material, the liquid crystal allows for electrical mani

SUBMITTER: Yavorskiy D 

PROVIDER: S-EPMC12715831 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature