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CsPbBr 3 perovskite thin film as a saturable absorber for MIR passively Q-switched lasers

Journal of Luminescence, ISSN: 0022-2313, Vol: 277, Page: 120910
2025
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Article Description

Saturable absorbers (SAs) are key devices for passive Q-switching. All-inorganic halide perovskites demonstrate superior stability compared to their organic-inorganic hybrid counterparts, making them more promising candidates as SAs. A high-quality, all-inorganic halide perovskite CsPbBr 3, designed for mid-infrared (MIR) broadband saturable absorption, has been successfully fabricated. The saturable absorption properties of this material within the MIR region have been thoroughly characterized. Characterization outcomes reveal that CsPbBr 3 possesses outstanding broadband saturable absorption characteristics. For the first time, passive Q-switching operation has been successfully achieved in the MIR region, specifically at wavelengths of 1.9 μm and 2.8 μm, utilizing the CsPbBr 3 SA. Peak powers of 5.57 W at the 1.9 μm wavelength and 5.23 W at the 2.8 μm wavelength were achieved. The experimental results indicate that CsPbBr 3 is an efficient SA material, holding significant promise for the development of pulsed lasers with broad bandwidth and high energy outputs.

Bibliographic Details

Mingchao Shao; Xiaoyue Feng; Beilei Yuan; Jiahao Dong; Wenxin Li; Jie liu; Jingjing Liu; Bingqiang Cao; Jun Xu

Elsevier BV

Biochemistry, Genetics and Molecular Biology; Physics and Astronomy; Chemistry

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