Subwavelength-scale lasing perovskite with ultrahigh Purcell enhancement

Abstract

The capability to control light-matter interfaces creates enormous opportunities across a wide spectrum of photophysical applications. This work demonstrates giant Purcell enhancement in a subwavelength perovskite lasing cavity leading to unparalleled spatiotemporal control with tailored ultrafast emission dynamics and radiation patterns. The well-devised subdiffractional mode confinement residing outside the perovskite region greatly enhances the long-term reliability and operational stability of the perovskite-based devices, show prospective robust applications in ultrafast integrated photonics and optoelectronics.