Two-Dimensional Pyramid-like WS2 Layered Structures for Highly Efficient Edge Second-Harmonic Generation

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	Two-Dimensional Pyramid-like WS2 Layered Structures for Highly Efficient Edge Second-Harmonic Generation
	Lin, Xianqing; Liu, Yingying; Wang, Kang; Wei, Cong; Zhang, Wei; Yan, Yongli; Li, Yong Jun; Yao, Jiannian; Zhao, Yong Sheng
刊名	ACS NANO
	2018
卷号	12 期号:1 页码:689-696
英文摘要	Two-dimensional (2D) layered materials, with large second-order nonlinear susceptibility, have received much scientific interest due to their potential applications in nonlinear optical devices. However, the atomic thickness of 2D layered materials leads to poor field confinement and weak light matter interaction at the nanoscale, resulting in low nonlinear conversion efficiency. Here, 2D pyramid-like multilayer (P-multilayer) layered structures are fabricated for efficient edge second-harmonic generation (SHG) based on the enhanced light matter interaction in whispering-gallery mode (WGM) cavities. The P-multilayer 2D layered materials, where the basal planes shrink gradually from the bottom to the top layers, exhibit efficient edge SH radiation due to the partial destructive interference of nonlinear polarizations between the neighboring atomic layers. Moreover, the well-defined 2D plate-like triangle morphology of P-multilayer WS2 forms a WGM resonance cavity, which results in enhanced light matter interaction and thus the enhancement of edge SHG, which can, be further enhanced by hybridizing the WGM mode with plasmonics. These results provide enlightenment structures for efficient nonlinear processes.
WOS记录号	WOS:000423495200074
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/38874]
专题	化学研究所_其它
推荐引用方式 GB/T 7714	Lin, Xianqing,Liu, Yingying,Wang, Kang,et al. Two-Dimensional Pyramid-like WS2 Layered Structures for Highly Efficient Edge Second-Harmonic Generation[J]. ACS NANO,2018,12(1):689-696.
APA	Lin, Xianqing.,Liu, Yingying.,Wang, Kang.,Wei, Cong.,Zhang, Wei.,...&Zhao, Yong Sheng.(2018).Two-Dimensional Pyramid-like WS2 Layered Structures for Highly Efficient Edge Second-Harmonic Generation.ACS NANO,12(1),689-696.
MLA	Lin, Xianqing,et al."Two-Dimensional Pyramid-like WS2 Layered Structures for Highly Efficient Edge Second-Harmonic Generation".ACS NANO 12.1(2018):689-696.