Blue perovskite single-mode lasing in a rubidium lead bromide microcubic cavity  

作　　者：BO LI WANGQI MAO SHUANG LIANG YIFENG SHI HONGXING DONG LONG ZHANG 

机构地区：[1]Department of Optics and Optical Engineering,University of Science and Technology of China,Hefei 230026,China [2]Key Laboratory of Materials for High-Power Laser,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China [3]State Key Laboratory of Precision Spectroscopy,School of Physics and Electronic Science,East China Normal University,Shanghai 200241,China [4]School of Microelectronics,Shanghai University,Shanghai 201800,China

出　　处：《Photonics Research》2023年第6期1067-1074,共8页光子学研究（英文版）

基　　金：National Natural Science Foundation of China(61675219,61875256);Natural Science Foundation of Shanghai(20JC1414605)。

摘　　要：Lead halide perovskite microlasers have shown impressive performance in the green and red wavebands.However,there has been limited progress in achieving blue-emitting perovskite microlasers.Here,blue-emitting perovskitephase rubidium lead bromide(RbPbBr_(3))microcubes were successfully prepared by using a one-step chemical vapor deposition process,which can be utilized to construct optically pumped whispering gallery mode microlasers.By regulating the growth temperature,we found that a high-temperature environment can facilitate the formation of the perovskite phase and microcubic morphology of RbPbBr_3.Notably,blue single-mode lasing in a RbPbBr_3microcubic cavity with a narrow linewidth of 0.21 nm and a high-quality factor(2200)was achieved.The obtained lasing from RbPbBr_3microlasers also exhibited an excellent polarization state factor(0.77).By modulating the mixed-monovalent cation composition,the wavelength of the microlaser could be tuned from green(536 nm)to pure blue(468 nm).Additionally,the heat stability of the mix-cation perovskite was better than that of conventional CsPbBr_(3).The stable and high-performance blue single-mode microlasers may thus facilitate the application of perovskite lasers in blue laser fields.

关 键 词：RUBIDIUM polarization PUMPED 

分 类 号：TN248[电子电信—物理电子学]