Author Affiliations
Abstract
1 Laboratory of Micro-Nano Photonic and Optoelectronic Materials and Devices, Key Laboratory of Materials for High-Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
2 Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
3 State Key Laboratory of Surface Physics, Key Laboratory of Micro and Nano Photonic Structures of Ministry of Education, Department of Physics, Collaborative Innovation Center of Advanced Microstructures, Fudan University, Shanghai 200433, China
4 Department of Physics, Engineering Physics & Astronomy and Department of Chemistry, Queen’s University, Kingston K7L-3N6, Ontario, Canada
5 State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Mechanical exfoliation (ME) and chemical vapor deposition (CVD) MoS2 monolayers have been extensively studied, but the large differences of nonlinear optical performance between them have never been clarified. Here, we prepared MoS2 monolayers using ME and CVD methods and investigated the two-photon absorption (TPA) response and its saturation. We found that the TPA coefficient of the ME monolayer was about (1.88 ± 0.21) × 103 cm/GW, nearly two times that of the CVD one at (1.04 ± 0.15) × 103 cm/GW. Furthermore, we simulated and compared the TPA-induced optical pulse modulation in multilayer cascaded structures, which is instructive and meaningful for the design of optical devices such as a beam shaper and optical limiter.
190.4400 Nonlinear optics, materials 160.4236 Nanomaterials 190.5970 Semiconductor nonlinear optics including MQW 020.4180 Multiphoton processes 
Chinese Optics Letters
2019, 17(8): 081901
作者单位
摘要
1 中国科学院上海光学精密机械研究所中科院强激光材料重点实验室, 上海 201800
2 西北大学化学与材料科学学院, 陕西 西安 710127
得益于独特的二维量子限制效应以及层与层之间耦合微扰的消除, 石墨烯、过渡金属硫化物MX2(M=Mo,W,Ti,Nb等; X=S,Se,Te等)、黑磷等二维层状半导体材料与其体材料相比, 在电子学、光子学等性能上都有本质的提高。以中国科学院上海光学精密机械研究所近几年的相关研究成果为主要对象, 结合国内外研究进展, 重点介绍了二维材料的制备方法、物理性质和超快非线性光学性能以及相关器件的研究进展, 并对其前景进行了展望。
材料 非线性光学 纳米结构 过渡金属硫化物 黑磷 饱和吸收效应 
中国激光
2017, 44(7): 0703004

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