Abstract

In the presence of a background magnetic field, axion dark matter induces an electric field and can thus excite phonon-polaritons in suitable materials. This work revisits the calculation of the axion-photon conversion power output from such materials, accounting for finite volume effects and material losses. Using dielectric functions of GaAs, Al₂O3, and SiO2, the paper derives a loss-aware signal estimate, discusses boundary conversion to propagating photons, and considers tuning strategies for scanning axion mass.

Abstract

In the presence of a background magnetic field, axion dark matter induces an electric field and can thus excite phonon-polaritons in suitable materials. This work revisits the calculation of the axion-photon conversion power output from such materials, accounting for finite volume effects and material losses. Using dielectric functions of GaAs, Al₂O3, and SiO2, the paper derives a loss-aware signal estimate, discusses boundary conversion to propagating photons, and considers tuning strategies for scanning axion mass.

Abstract

In the presence of a background magnetic field, axion dark matter induces an electric field and can thus excite phonon-polaritons in suitable materials. This work revisits the calculation of the axion-photon conversion power output from such materials, accounting for finite volume effects and material losses. Using dielectric functions of GaAs, Al₂O3, and SiO2, the paper derives a loss-aware signal estimate, discusses boundary conversion to propagating photons, and considers tuning strategies for scanning axion mass.

Abstract

In the presence of a background magnetic field, axion dark matter induces an electric field and can thus excite phonon-polaritons in suitable materials. This work revisits the calculation of the axion-photon conversion power output from such materials, accounting for finite volume effects and material losses. Using dielectric functions of GaAs, Al₂O3, and SiO2, the paper derives a loss-aware signal estimate, discusses boundary conversion to propagating photons, and considers tuning strategies for scanning axion mass.