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Published on: September 8, 2017
Room temperature three-photon pumped CH3NH3PbBr3 perovskite microlasers
Yisheng Gao1,1, Shuai Wang1,1, Can Huang1,1
1State Key Laboratory on Tunable laser Technology, Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen, 518055, China.
High-quality hybrid perovskite microstructures exhibit three-photon absorption and emission. Researchers achieved whispering-gallery-mode microlasers from these materials, showcasing their nonlinear optical potential.
Area of Science:
- Materials Science
- Optics
- Photonics
Background:
- Hybrid lead halide perovskites are advanced materials for light-harvesting and emission.
- Their nonlinear optical properties, particularly two-photon processes, are well-studied.
- Three-photon processes in perovskites remain largely unexplored, especially for laser applications.
Purpose of the Study:
- To synthesize high-quality hybrid perovskite microstructures.
- To investigate their nonlinear optical properties, focusing on three-photon processes.
- To demonstrate laser emission from these microstructures.
Main Methods:
- Synthesis of CH3NH3PbBr3 perovskite microstructures using a solution-processed precipitation method.
- Optical characterization under intense 1240 nm laser pumping.
- Observation of optical limiting effects and photoluminescence.
- Achievement of whispering-gallery-mode microlasers.
Main Results:
- Successful synthesis of high-quality CH3NH3PbBr3 perovskite microstructures.
- Observation of optical limiting and band-to-band photoluminescence at 540 nm.
- First-time demonstration of whispering-gallery-mode microlasers from CH3NH3PbBr3 microplates and microrods.
- Evidence of three-photon absorption and emission processes.
Conclusions:
- Hybrid lead halide perovskites possess significant potential for nonlinear photonic devices.
- The demonstrated microlasers highlight the viability of perovskites in advanced optical applications.
- This study opens new avenues for exploring three-photon processes in perovskite materials.
