研究目的
Investigating the fabrication and lasing characteristics of lateral-cavity enabled Fabry-Perot microlasers from all-inorganic perovskites.
研究成果
The study successfully demonstrated duplicable lateral-cavity supported F-P microlasers from CVD-grown ILHP microsheets, achieving desirable single-mode lasing by reducing the microsheet width. The results provide a route toward distinctive and functional microlasers based on ILHPs, with potential applications in integrated optics.
研究不足
The study is limited by the temporal response of the streak camera system, which may underestimate the PL lifetime under lasing conditions. Additionally, the current lateral cavity microlaser outputs in two directions, which may limit its application in scenarios requiring unidirectional emission.
1：Experimental Design and Method Selection:
The study involved the fabrication of rectangular-shaped ILHP microsheets using the chemical vapor deposition (CVD) method. The lasing properties were investigated using a microphotoluminescence system.
2：Sample Selection and Data Sources:
Single-crystalline CsPbBr3 microsheets were grown on mica substrates. The samples were characterized using optical microscopy, SEM, AFM, XRD, and EDS.
3：List of Experimental Equipment and Materials:
The equipment included a CVD system for sample fabrication, optical microscopy, SEM, AFM, XRD, and EDS for characterization, and a microphotoluminescence system for lasing measurements.
4：Experimental Procedures and Operational Workflow:
The CsPbBr3 microsheets were fabricated by CVD. The lasing properties were measured by varying the pump fluence and observing the PL spectra and images. The emission polarization and PL dynamics were also studied.
5：Data Analysis Methods:
The lasing characteristics were analyzed by examining the PL spectra, mode spacing, Q-factors, and emission polarization. The FSR was calculated to confirm the F-P lasing mechanism.
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