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Broadband Ultrafast Nonlinear Optical Limiting at a Porphyrin-Based 2D Polymer
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2024-05-10 , DOI: 10.1002/adom.202400280 Fang Liu 1 , Zihao Guan 1 , Zhiyuan Wei 1 , Lulu Fu 1 , Yang Zhao 1 , Lu Chen 1 , Naying Shan 1 , Zhipeng Huang 1 , Mark G. Humphrey 2 , Chi Zhang 1
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2024-05-10 , DOI: 10.1002/adom.202400280 Fang Liu 1 , Zihao Guan 1 , Zhiyuan Wei 1 , Lulu Fu 1 , Yang Zhao 1 , Lu Chen 1 , Naying Shan 1 , Zhipeng Huang 1 , Mark G. Humphrey 2 , Chi Zhang 1
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Ultrafast lasers have significantly contributed to the advancement of research and technology; however, high-intensity lasers bring potential risks to precision instruments and the human eye. Developing optical limiting (OL) devices capable of reasonably controlling laser energy to an acceptable energy level is imperative. Nevertheless, achieving both exceptional OL performance and broad-spectrum laser intensity tunability proves highly challenging. In this work, the synthesis of a porphyrin-based 2D polymer (Por-2DP) using a template-assisted self-coupling polymerization, constructing a 2D framework through the carbon-carbon single bond coupling of porphyrin monomer is presented. The resultant Por-2DP demonstrates remarkable broadband nonlinear absorption performance, spanning the visible and near-infrared spectral regions under an ultrafast pulse laser (35 fs) for the first time. OL thresholds at excitation wavelengths of 515, 800, and 1550 nm are determined to be 1.44, 0.48, and 0.54 mJ cm−2, respectively, surpassing reported 2D materials to date. Additionally, the Por-2DP exhibits prominent photostability, enabling sustained operation under intense light conditions for a long time, thereby enhancing OL practical applicability. This study not only introduces a novel OL material and device but also promotes the application of innovative 2D organic polymers in NLO field.
中文翻译：
卟啉基二维聚合物的宽带超快非线性光学限制
超快激光器对研究和技术的进步做出了重大贡献；然而，高强度激光给精密仪器和人眼带来潜在风险。开发能够合理地将激光能量控制在可接受的能量水平的光限幅（OL）器件势在必行。然而，实现卓越的 OL 性能和广谱激光强度可调性被证明是极具挑战性的。在这项工作中，提出了使用模板辅助自偶联聚合合成基于卟啉的二维聚合物（Por-2DP），通过卟啉单体的碳-碳单键偶联构建二维框架。由此产生的 Por-2DP 表现出卓越的宽带非线性吸收性能，首次在超快脉冲激光（35 fs）下跨越可见光和近红外光谱区域。激发波长为515、800和1550 nm时的OL阈值分别确定为1.44、0.48和0.54 mJ cm -2 ，超过了迄今为止报道的2D材料。此外，Por-2DP表现出突出的光稳定性，能够在强光条件下长时间持续运行，从而增强OL的实际适用性。该研究不仅介绍了一种新型的OL材料和器件，而且促进了创新的二维有机聚合物在非线性光学领域的应用。
更新日期：2024-05-10
中文翻译：
卟啉基二维聚合物的宽带超快非线性光学限制
超快激光器对研究和技术的进步做出了重大贡献；然而，高强度激光给精密仪器和人眼带来潜在风险。开发能够合理地将激光能量控制在可接受的能量水平的光限幅（OL）器件势在必行。然而，实现卓越的 OL 性能和广谱激光强度可调性被证明是极具挑战性的。在这项工作中，提出了使用模板辅助自偶联聚合合成基于卟啉的二维聚合物（Por-2DP），通过卟啉单体的碳-碳单键偶联构建二维框架。由此产生的 Por-2DP 表现出卓越的宽带非线性吸收性能，首次在超快脉冲激光（35 fs）下跨越可见光和近红外光谱区域。激发波长为515、800和1550 nm时的OL阈值分别确定为1.44、0.48和0.54 mJ cm -2 ，超过了迄今为止报道的2D材料。此外，Por-2DP表现出突出的光稳定性，能够在强光条件下长时间持续运行，从而增强OL的实际适用性。该研究不仅介绍了一种新型的OL材料和器件，而且促进了创新的二维有机聚合物在非线性光学领域的应用。
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