期刊
NANOSCALE
卷 11, 期 30, 页码 14383-14391出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9nr03964c
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资金
- National Natural Science Fund of China [61775142]
- Shenzhen basic research project on subject layout [JCYJ20170412105812811]
- China Postdoctoral Science Foundation [2018M630976, 2017M620383]
- Science and Technology Innovation Commission of Shenzhen [JCYJ20170818141407343]
Ultrafast photonics based on two-dimensional (2D) materials has been used to investigate light-matter interactions and laser generation, as well as light propagation, modulation, and detection. Here, 2D metal-phosphorus trichalcogenides, which are known for applications in catalysis and electrochemical storage, also exhibit advantageous photonic properties as nanoflakes that are only a few layers thick. By using an open-aperture Z-scan system, few-layer NiPS3 nanoflakes exhibited a large modulation depth of 56% and a low saturable intensity of 16 GW cm(-2) at 800 nm. When NiPS3 nanoflakes were used as a saturable absorber at 1066 nm, highly stable mode-locked pulses were generated. Thus, these results revealed the nonlinear optical properties of NiPS3 nanoflakes which have potential photonics applications, such as modulators, switches, and thresholding devices.
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