1. Two-Dimensional Bi2Sr2CaCu2O8+δ Nanosheets for Ultrafast Photonics and Optoelectronics
- Author
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Qiaoliang Bao, Jianding Li, Huaiyu Shao, Jianhui Yu, Guanyu Liu, Haoran Mu, Yuan Huang, Guichuan Xing, Wenguo Zhu, Xiaozhi Bao, Weikang Dong, Peng Gao, Qi Wei, Babar Shabbir, Bingzhe Wang, and Xiangping Li
- Subjects
Superconductivity ,Materials science ,business.industry ,Infrared ,General Engineering ,Physics::Optics ,General Physics and Astronomy ,Photodetector ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,Mode-locking ,Optoelectronics ,General Materials Science ,Photonics ,0210 nano-technology ,business ,Absorption (electromagnetic radiation) ,Ultrashort pulse ,Plasmon - Abstract
Two-dimensional (2D) Bi2Sr2CaCu2O8+δ (BSCCO) is a emerming class of 2D materials with high-temperature superconductivity for which their electronic transport properties have been intensively studied. However, the optical properties, especially nonlinear optical response and the photonic and optoelectronic applications of normal state 2D Bi2Sr2CaCu2O8+δ (Bi-2212), have been largely unexplored. Here, the linear and nonlinear optical properties of mechanically exfoliated Bi-2212 thin flakes are systematically investigated. 2D Bi-2212 shows a profound plasmon absorption in near-infrared wavelength range with ultrafast carrier dynamics as well as tunable nonlinear absorption depending on the thickness. We demonstrated that 2D Bi-2212 can be applied not only as an effective mode-locker for ultrashort pulse generation but also as an active medium for infrared light detection due to its plasmon absorption. Our results may trigger follow up studies on the optical properties of 2D BSCCO and demonstrate potential opportunities for photonic and optoelectronic applications.
- Published
- 2021
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