Second-order hyperpolarizability and all-optical-switching of intensity-modulated spatial self-phase modulation in CsPbBr1.5I1.5 perovskite quantum dot

Few-layer TaSe2 nanosheets are prepared by liquid-phase exfoliation, the nonlinear optical response of which is researched based on the spatial self-phase modulation effect.

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Spatial self-phase modulation and all-optical switching of graphene oxide dispersions

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2018.08.330 ◽

2019 ◽

Vol 771 ◽

pp. 900-904 ◽

Cited By ~ 12

Author(s):

Youxian Shan ◽

Jie Tang ◽

Leiming Wu ◽

Shunbin Lu ◽

Xiaoyu Dai ◽

...

Keyword(s):

Graphene Oxide ◽

Phase Modulation ◽

Optical Switching ◽

Self Phase Modulation ◽

All Optical ◽

All Optical Switching

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Nonlinear optical response, all optical switching, and all optical information conversion in NbSe2 nanosheets based on spatial self-phase modulation

Nanoscale ◽

10.1039/c8nr08966c ◽

2019 ◽

Vol 11 (10) ◽

pp. 4515-4522 ◽

Cited By ~ 20

Author(s):

Yue Jia ◽

Yunlong Liao ◽

Leiming Wu ◽

Youxian Shan ◽

Xiaoyu Dai ◽

...

Keyword(s):

Phase Modulation ◽

Optical Switching ◽

Nonlinear Optical ◽

Optical Response ◽

Nonlinear Optical Response ◽

Optical Information ◽

Self Phase Modulation ◽

All Optical ◽

All Optical Switching

All optical switching and all optical information conversion in NbSe2 nanosheets based on spatial self-phase modulation are confirmed experimentally.

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Emergence of electron coherence and two-color all-optical switching in MoS2 based on spatial self-phase modulation

Proceedings of the National Academy of Sciences ◽

10.1073/pnas.1504920112 ◽

2015 ◽

Vol 112 (38) ◽

pp. 11800-11805 ◽

Cited By ~ 63

Author(s):

Yanling Wu ◽

Qiong Wu ◽

Fei Sun ◽

Cai Cheng ◽

Sheng Meng ◽

...

Keyword(s):

Phase Modulation ◽

Optical Switching ◽

Interband Transition ◽

Dielectric Susceptibility ◽

Self Phase Modulation ◽

All Optical ◽

Quantum Materials ◽

Many Body Interactions ◽

Electron Coherence ◽

All Optical Switching

Generating electron coherence in quantum materials is essential in optimal control of many-body interactions and correlations. In a multidomain system this signifies nonlocal coherence and emergence of collective phenomena, particularly in layered 2D quantum materials possessing novel electronic structures and high carrier mobilities. Here we report nonlocal ac electron coherence induced in dispersed MoS2 flake domains, using coherent spatial self-phase modulation (SSPM). The gap-dependent nonlinear dielectric susceptibility χ(3) measured is surprisingly large, where direct interband transition and two-photon SSPM are responsible for excitations above and below the bandgap, respectively. A wind-chime model is proposed to account for the emergence of the ac electron coherence. Furthermore, all-optical switching is achieved based on SSPM, especially with two-color intraband coherence, demonstrating that electron coherence generation is a ubiquitous property of layered quantum materials.

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