Journal Article

Ultrastable and Low-Threshold Two-Photon-Pumped Amplified Spontaneous Emission from CsPbBr 3 /Ag Hybrid Microcavity

Li, Zixin, Zhao, Zhiran, Cheng, Shiyi, Deng, Quantong, Dai, Jun, Zhang, Yatao, Zheng, Yunbao, Liu, Yuanyuan, Li, Shulei, Lin, Zhenxu

2024

Overview

Halide perovskite materials have garnered significant research attention due to their remarkable performance in both photoharvesting photovoltaics and photoemission applications. Recently, self-assembled CsPbBr superstructures (SSs) have been demonstrated to be promising lasing materials. In this study, we report the ultrastable two-photon-pumped amplified stimulated emission from a CsPbBr SS/Ag hybrid microcavity with a low threshold of 0.8 mJ/cm at room temperature. The experimental results combined with numerical simulations show that the CsPbBr SS exhibits a significant enhancement in the electromagnetic properties in the hybrid microcavity on Ag film, leading to the uniform spatial temperature distribution under the irradiation of a pulsed laser, which is conducive to facilitate the recrystallization process of the QDs and improve their structural integrity and optical properties. This study provides a new idea for the application of CsPbBr /Ag hybrid microcavity in photonic devices, demonstrating its potential in efficient optical amplification and upconversion lasers.