CsPbBr3 perovskite thin film as a saturable absorber for MIR passively Q-switched lasers

IF 3.3 3区物理与天体物理 Q2 OPTICS Journal of Luminescence Pub Date : 2024-09-21 DOI:10.1016/j.jlumin.2024.120910

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

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Abstract

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 CsPbBr₃, 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 CsPbBr₃ 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 CsPbBr₃ 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 CsPbBr₃ is an efficient SA material, holding significant promise for the development of pulsed lasers with broad bandwidth and high energy outputs.

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用作中红外被动 Q 开关激光器可饱和吸收体的铯硼硼 3 包晶薄膜

可饱和吸收体（SA）是无源 Q 开关的关键器件。与有机无机杂化的同类产品相比，全无机卤化物包光体具有更高的稳定性，因此更有希望成为可饱和吸收体。目前已成功制备出一种用于中红外（MIR）宽带可饱和吸收的高质量全无机卤化物包晶 CsPbBr3。对这种材料在中红外区域的可饱和吸收特性进行了全面表征。表征结果表明，CsPbBr3 具有出色的宽带可饱和吸收特性。利用 CsPbBr3 SA，我们首次在中红外区域成功实现了无源 Q 开关操作，特别是在 1.9 μm 和 2.8 μm 波长处。在 1.9 μm 波长和 2.8 μm 波长分别实现了 5.57 W 和 5.23 W 的峰值功率。实验结果表明，CsPbBr3 是一种高效的 SA 材料，有望开发出具有宽带宽和高能量输出的脉冲激光器。

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来源期刊

Journal of Luminescence 物理-光学

CiteScore

6.70

自引率

13.90%

发文量

850

审稿时长

3.8 months

期刊介绍： The purpose of the Journal of Luminescence is to provide a means of communication between scientists in different disciplines who share a common interest in the electronic excited states of molecular, ionic and covalent systems, whether crystalline, amorphous, or liquid. We invite original papers and reviews on such subjects as: exciton and polariton dynamics, dynamics of localized excited states, energy and charge transport in ordered and disordered systems, radiative and non-radiative recombination, relaxation processes, vibronic interactions in electronic excited states, photochemistry in condensed systems, excited state resonance, double resonance, spin dynamics, selective excitation spectroscopy, hole burning, coherent processes in excited states, (e.g. coherent optical transients, photon echoes, transient gratings), multiphoton processes, optical bistability, photochromism, and new techniques for the study of excited states. This list is not intended to be exhaustive. Papers in the traditional areas of optical spectroscopy (absorption, MCD, luminescence, Raman scattering) are welcome. Papers on applications (phosphors, scintillators, electro- and cathodo-luminescence, radiography, bioimaging, solar energy, energy conversion, etc.) are also welcome if they present results of scientific, rather than only technological interest. However, papers containing purely theoretical results, not related to phenomena in the excited states, as well as papers using luminescence spectroscopy to perform routine analytical chemistry or biochemistry procedures, are outside the scope of the journal. Some exceptions will be possible at the discretion of the editors.