Sun Yan, Yuan Junjie, Xin Yi, Liu Guowei, Zhang Fang, Xing Fei, Fu Shenggui
School of Physics and Optoelectronic Engineering, Shandong University of Technology Zibo 255000 China
RSC Adv. 2021 Oct 29;11(55):35046-35050. doi: 10.1039/d1ra06046e. eCollection 2021 Oct 25.
The nonlinear absorption properties of two-dimensional bismuthene nanosheets have great value for application in the photonics field. In this work, bismuthene nanosheets with a thickness of around 4 nm were prepared using the liquid phase exfoliation (LPE) method. The infrared waveband nonlinear absorption properties of bismuthene nanosheets were investigated using the open aperture Z-scan technique with four wavelengths of 950, 1064, 1200, and 1500 nm, respectively. Bismuthene nanosheets exhibited broadband saturated absorption (SA) properties at the infrared band. The lower saturated intensity indicated the advantages of bismuthene as a saturated absorber in the application of ultra-fast lasers in the infrared band.
二维铋烯纳米片的非线性吸收特性在光子学领域具有重要的应用价值。在本工作中，采用液相剥离（LPE）法制备了厚度约为4 nm的铋烯纳米片。利用开孔Z扫描技术，分别在950、1064、1200和1500 nm四个波长下研究了铋烯纳米片的红外波段非线性吸收特性。铋烯纳米片在红外波段表现出宽带饱和吸收（SA）特性。较低的饱和强度表明铋烯作为饱和吸收体在红外波段超快激光应用中的优势。
