Surface Dyakonov–Cherenkov radiation

Abstract Recent advances in engineered material technologies (e.g., photonic crystals, metamaterials, plasmonics, etc.) provide valuable tools to control Cherenkov radiation. In all these approaches, however, the particle velocity is a key parameter affect radiation designed material, while influence of trajectory generally negligible. Here, we report on surface Dyakonov–Cherenkov radiation, i.e. emission directional Dyakonov waves from swift charged moving atop birefringent crystal. This new type highly susceptible both and trajectory, e.g. observe sharp enhancement when falls vicinity particular direction. Moreover, close threshold, such can be orders magnitude higher than that obtained traditional detectors. These distinct properties allow us determine simultaneously direction velocities compact platform. The studied this work not only adds degree freedom for identification, but also provides an all-dielectric route construct detectors with enhanced sensitivity.