Abstract
As a novel one-atom-thick carbon allotrope, graphdiyne (GDY) has attracted wide interest in two-dimensional materials owing to its unique feature with a planar layer comprising sp2- and sp-hybridized carbon atoms and a direct natural bandgap. A high-quality saturable absorber (SA) based on GDY was successfully fabricated, and the nonlinear saturable absorption properties were investigated. A compact diode-pumped solid-state passively Q-switched laser based on the as-prepared GDY-SA could be operated at 2 µm. The Q-switched laser delivered a maximum average output power of 1.29 W at a central wavelength of 1908.41 nm with up to 54.8% slope efficiency. A repetition rate of 91.58 kHz and single pulse energy of 23.08 µJ were obtained. This work is the first application of GDY as an SA to generate all-solid-state pulsed lasers. These results indicate that GDY is a promising SA for solid-state pulsed lasers and has further application potential for ultrafast photonic devices in the 2-µm region.
摘要
作为一种新型单原子层的碳同素异形体, 石墨炔在二维材料 领域引起了广泛兴趣, 其独特之处在于: 具有sp2和sp杂化的碳原子 组成的平面结构和直接存在的天然带隙能. 本文成功制备了基于 石墨炔的高质量可饱和吸收体, 并研究了其非线性可饱和吸收特 性. 以石墨炔可饱和吸收体制备的脉冲激光调制器件, 实现了高 效、结构紧凑的二极管泵浦全固态2微米被动调Q激光运转. 调Q 激光器中心波长位于1908.41 nm处, 最大输出功率1.29 W, 斜效率 高达54.8%, 最高重复频率91.58 kHz. 这是首次将石墨炔作为可饱 和吸收体应用于全固态脉冲激光器中. 实验结果表明石墨炔可饱 和吸收调制器件在高功率全固态脉冲激光器中具有广泛的应用前 景
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Acknowledgements
This work was financially supported by the National Natural Science Foundation of China (11974220, 61635012, 61875138, 61961136001, and U1801254), and the State Key Research Development Program of China (2019YFB2203503).
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Zu Y designed and conducted the experiments; Guo J synthesized and characterized the sample; Zu Y wrote the paper; Hao Q, Zhang F and Wang C supervised the project and analyzed the results; Liu J and Wang B supported and guided in whole work. All authors contributed to the general discussion.
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The authors declare that they have no conflict of interest.
Yuqian Zu received her BSc degree from Shandong Normal University in 2016. She is currently pursuing her PhD degree in optics under the supervision of Prof. Jie Liu at the School of Physics and Electronics, Shandong Normal University. Her research interests include diode-pumped all-solid-state laser and laser materials.
Jia Guo received his MSc degree from Shandong Normal University in 2018. He is currently pursuing his PhD degree under the supervision of Prof. Han Zhang at the College of Physics and Optoelectronic Engineering, Shenzhen University. His research interests include two-dimensional material-based fiber lasers, modulator, and nonlinear optics.
Jie Liu received her BSc degree from Shandong University in 1984. Currently, she is a professor at the School of Physics and Electronics, Shandong Normal University. Her current research includes all-solid-state laser technology and devices and nonlinear optics.
Bing Wang received her PhD degree in physics from Sun Yat-sen University in 2007. Currently, she is an associate professor at the College of Physics and Optoelectronic Engineering, Shenzhen University. Her scientific research includes 2D semiconductors optoelectronic properties and applications.
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Zu, Y., Guo, J., Hao, Q. et al. Graphdiyne as a saturable absorber for 2-µm all-solid-state Q-switched laser. Sci. China Mater. 64, 683–690 (2021). https://doi.org/10.1007/s40843-020-1490-9
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DOI: https://doi.org/10.1007/s40843-020-1490-9