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Ionic Solvent-Assisted MAPbBr3 Perovskite Film for Two-Photon Pumped Single-Mode Laser
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2023-08-29 , DOI: 10.1021/acs.jpclett.3c01959
Zijun Zhan 1, 2, 3 , Zhiping Hu 3 , Sihao Huang 2 , Siyu Dong 2 , Qian Li 3 , Zhengzheng Liu 2 , Juan Du 3 , Yuxin Leng 1, 2, 3
Affiliation  

Miniaturized coherent light sources on the nanoscale are highly desired for on-chip photonics integration. However, when approaching the diffraction limit, the sub-wavelength-scale all-dielectric lasers are difficult to realize due to the trade-off between lasing performance and physical size. Especially for a thin-film laser, usually an externally complex cavity is required to provide the necessary optical feedback. Herein, we successfully shrink the MAPbBr3 perovskite thin-film laser to sub-wavelength scale (300 nm) with simplified cavity design using only an ultraviolet glue layer and a quartz glass. The morphology quality and the gain properties of the film are enhanced by introducing ionic liquid. Consequently, the stable and low-threshold single-mode laser with a highly linear polarization degree of 78.6% and a narrow line width of 0.35 nm is achieved under two-photon excitation. The excellent single-mode laser with sub-wavelength scale and ultrasimplified structure could provide a facile and versatile platform for future integrated optoelectronic devices.

中文翻译:

用于双光子泵浦单模激光器的离子溶剂辅助 MAPbBr3 钙钛矿薄膜

芯片上光子集成非常需要纳米级的小型化相干光源。然而,当接近衍射极限时,由于激光性能和物理尺寸之间的权衡,亚波长尺度全介质激光器很难实现。特别是对于薄膜激光器,通常需要外部复杂的腔来提供必要的光学反馈。在此,我们仅使用紫外线胶层和石英玻璃,通过简化的腔设计,成功地将 MAPbBr 3钙钛矿薄膜激光器缩小到亚波长尺度(300 nm)。通过引入离子液体提高了薄膜的形貌质量和增益特性。因此,在双光子激发下实现了稳定、低阈值的单模激光器,其线偏振度高达78.6%,线宽为0.35 nm。具有亚波长尺度和超简化结构的优秀单模激光器可以为未来的集成光电器件提供一个简便且多功能的平台。
更新日期:2023-08-29
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