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Updated: Jan 21, 2026

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
Published on: November 21, 2019
NiPS3 nanoflakes: a nonlinear optical material for ultrafast photonics
Jiefeng Liu1, Xinzhe Li, Yijun Xu
1Collaborative Innovation Centre for Optoelectronic Science & Technology, and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, P.R. China. geyanqi@hotmail.com.
Few-layer nickel-phosphorus trichalcogenide (NiPS3) nanoflakes show promise for ultrafast photonics. These materials exhibit excellent nonlinear optical properties, enabling applications in modulators and switches.
Area of Science:
- Materials Science
- Optics and Photonics
Background:
- Two-dimensional (2D) materials are crucial in ultrafast photonics for studying light-matter interactions.
- 2D metal-phosphorus trichalcogenides, known for catalysis and energy storage, also possess unique photonic properties.
Purpose of the Study:
- To investigate the nonlinear optical properties of few-layer NiPS3 nanoflakes.
- To explore the potential of NiPS3 nanoflakes in ultrafast photonic applications.
Main Methods:
- Utilized an open-aperture Z-scan system to characterize nonlinear optical properties.
- Employed NiPS3 nanoflakes as a saturable absorber in a laser system.
Main Results:
- Few-layer NiPS3 nanoflakes demonstrated a large modulation depth of 56% at 800 nm.
- Achieved a low saturable intensity of 16 GW cm⁻² at 800 nm.
- Generated highly stable mode-locked pulses at 1066 nm using NiPS3 nanoflakes as a saturable absorber.
Conclusions:
- NiPS3 nanoflakes possess significant nonlinear optical properties.
- These findings highlight the potential of NiPS3 nanoflakes for photonic devices like modulators, switches, and thresholding devices.
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