4.6 Article

2D self-assembled perovskite nanosheets as a nonlinear saturable absorber for passive Q-switched laser

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JOURNAL OF LUMINESCENCE
卷 253, 期 -, 页码 -

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ELSEVIER
DOI: 10.1016/j.jlumin.2022.119453

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Passive Q -switched laser; Perovskite nanoplatelets; Nonlinear saturable absorber

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Research has found that self-assembled CsPbBr3 nanoplatelets prepared at room temperature exhibit excellent nonlinear optical performance, making them suitable for applications in optical communication, laser pulses, and nonlinear optics.
Saturable absorbers (SAs) are essential devices for laser generation through passive Q-switch or mode-locking methods. Quantum-confined nanocrystals as excellent SAs have been attracted much attention. Self-assembled CsPbBr3 nanoplatelets (NPLs) were prepared at room temperature, which indicated nonlinear optical trans-mission with the modulation depth and the saturable intensity of 13.88% and 1.75 MW cm-2, respectively. The maximum repetition rate of CsPbBr3 NPLs is 1466 kHz, while corresponding pulse width is 69 ns. The nonlinear optical performance of CsPbBr3 NPLs indicate its potential applications in optical communication, laser pulses and nonlinear optics.

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