Wavefront control of perovskite photoluminescence

Incoherent light is one of the most common and widely used types of radiation in the modern world. Its main advantages include a broad wavelength range, the simplicity of creating sources for such radiation, and high energy efficiency. However, its primary drawback is the lack of coherence and, consequently, the inability to use standard methods for controlling the wavefront of such radiation, which limits the application scope of incoherent light sources. In this work, we developed and investigated a unified system comprising a perovskite (as the incoherent light source) and diffractive optical elements for manipulating the photoluminescence wavefront. We demonstrated the focusing of perovskite photoluminescence using an amplitude Fresnel zone plate. Furthermore, we showed the possibility of generating a simplest hologram, specifically by demonstrating the generation of an optical vortex via a pitch-fork grating.