Achromatic optical retardation from perovskites

摘要

Nature Photonics 15,813-816(2021)https://doi.org/10.1038/s41566-021-00865-0 Control of light polarization over a wide range of optical wavelengths is highly desirable within a variety of applications.Fabrication of waveplates,allowing for achromatic retardation usually requires a sophisticated combination of multiple layers of birefringent materials.