| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Giant Nonlinear Optical Response in Topological Semimetal Molybdenum Phosphide |
| Kai Hu1, Yujie Qin1, Liang Cheng1, Youguo Shi2, and Jingbo Qi1* |
1State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
2Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
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| Cite this article: |
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Kai Hu, Yujie Qin, Liang Cheng et al 2023 Chin. Phys. Lett. 40 114202 |
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Abstract Nonlinear optical properties are investigated using the static and time-resolved second harmonic generation in the topological material molybdenum phosphide (MoP) with three-component fermions. Giant second harmonic generation signals are detected and the derived $\chi^{(2)}$ value is larger than that of the typical electro–optic material. Upon optical excitation, no photoinduced change of the symmetry is detected in MoP, which is quite different from previous observations in several other topological materials.
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Received: 29 July 2023
Editors' Suggestion
Published: 18 October 2023
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| PACS: |
42.65.Ky
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(Frequency conversion; harmonic generation, including higher-order harmonic generation)
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42.65.-k
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(Nonlinear optics)
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78.47.jg
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(Time resolved reflection spectroscopy)
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