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3 October 2022 Random lasing in quasi-2D lead-halide perovskite (Conference Presentation)
Colton Fruhling, Kang Wang, Sarah N. Chowdhury, Alexander V. Kildishev, Xiangeng Meng, Letian Dou, Vladimir M. Shalaev, Alexandra Boltasseva
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Proceedings Volume PC12195, Metamaterials, Metadevices, and Metasystems 2022; PC121950O (2022) https://doi.org/10.1117/12.2632846
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States
Abstract
We present the first demonstration of coherent random lasing in optically thin quasi-2D lead-halide perovskite. The intensity fluctuations of laser emission exhibited a large-tailed Lévy distribution, establishing random lasing nature of the observed stimulated emissions. Operation in the diffusive regime was indicated by the relatively large observed photon mean free path (4.5 μm) compared to the lasing wavelength (~550 nm). The coherent spectral modes were found to extend through the entire pump-laser volume. Such lasing modes are sensitive to the local position of the pump spot, suggesting the potential application in sensing subtle variation of local environment. The simple solution processing of quasi-2D perovskites makes them practical for augmenting a variety of meta-devices with non-Hermitian properties to make advanced nanolaser designs with controllable figures of merit.
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Colton Fruhling, Kang Wang, Sarah N. Chowdhury, Alexander V. Kildishev, Xiangeng Meng, Letian Dou, Vladimir M. Shalaev, and Alexandra Boltasseva "Random lasing in quasi-2D lead-halide perovskite (Conference Presentation)", Proc. SPIE PC12195, Metamaterials, Metadevices, and Metasystems 2022, PC121950O (3 October 2022); https://doi.org/10.1117/12.2632846
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KEYWORDS
Perovskite
Random lasers
Environmental sensing
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