Giant SHG
Bi2O2Se films under uniaxial strain exhibit giant second-harmonic generation, surpassing existing 2D nonlinear optical materials, with air stability.
Lou, Zhefeng · Zhu, Ziye · Wu, Mengqi · Wang, Tao · Wang, Jialu · Zuo, Huakun · Xu, Zhuokai · Jichuang, Shen · Wang, Zhiwei · Li, Lan · Xu, Shuigang · Kong, Wei · Li, Wenbin · Zheng, Xiaorui · Wang, Hua · Lin, Xiao
Advanced Materials 2024
SHG signals in strained 20 nm-BOS films exceed those of NbOI2 and NbOCl2 of similar thickness by a factor of 10
four orders of magnitude higher than monolayer-MoS2
tunability of SHG approximately six orders of magnitude through strain modulation