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Peer-reviewedCC BYScience Advances

Nonlinear directional emission on monolayer MoS ₂ by optical orbit-orbit coupling

  • Xianglong Wang1
  • Xinghao Wang1,2
  • Xueli Jiang1
  • Shibo Xu1
  • Zhaohui Ye1
  • Liumiao Gao1
  • Zhenghong Li1
  • Zhiyuan Yan3
  • Chaowei Wang1
  • Yang Chen1
  • Jiawen Li1
  • Yanlei Hu1
2 more authors
  • Dong Wu1
  • Jincheng Ni1,4
4 affiliations
  1. 1Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230027, China.
  2. 2Laser Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.
  3. 3State Key Laboratory of Analog and Mixed-Signal VLSI, Institute of Microelectronics, Faculty of Science and Technology, University of Macau, Macau SAR, China.
  4. 4State Key Laboratory of Opto-Electronic Information Acquisition and Protection Technology, Anhui University, Hefei 230601, China.
Open at sourceDOICite

Abstract

Controlling the direction of light emission on the subwavelength scale is a key to manipulating light and improving efficiency in optical sensing and quantum information processing. In functional metasurfaces, photonic spin angular momentum is widely used to control the propagation of light emission by geometric phase, but it is challenging to accomplish using monolayer materials because of lacking optical resonance in atomic thickness. Furthermore, the manipulation of the optical geometric phase based on spin angular momentum beams typically offers only two tunable states. Here, we report optical control of free-space routing of second harmonic generation in monolayer MoS 2 assisted by photonic orbital angular momenta. The experimental directionality of the second harmonic light can reach 0.84. Moreover, we can dynamically route the second harmonic generation signal on the engineered monolayer MoS 2 with four directions, showing high-order information encryption. Our findings thus provide great flexibility and more degrees of freedom in nonlinear optical modulation, integrated photonics, and dynamic flat optics.

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Cite

BibTeXRIS
BibTeX
@article{wang2026nonlinear,
  title = {{Nonlinear directional emission on monolayer MoS ₂ by optical orbit-orbit coupling}},
  author = {Xianglong Wang and Xinghao Wang and Xueli Jiang and Shibo Xu and Zhaohui Ye and Liumiao Gao and Zhenghong Li and Zhiyuan Yan and Chaowei Wang and Yang Chen and Jiawen Li and Yanlei Hu and Dong Wu and Jincheng Ni},
  journal = {Science Advances},
  year = {2026},
  month = oct,
  doi = {10.1126/sciadv.aei3860},
  url = {https://www.science.org/doi/10.1126/sciadv.aei3860},
  note = {CC BY},
}
RIS
TY  - JOUR
TI  - Nonlinear directional emission on monolayer MoS ₂ by optical orbit-orbit coupling
AU  - Xianglong Wang
AU  - Xinghao Wang
AU  - Xueli Jiang
AU  - Shibo Xu
AU  - Zhaohui Ye
AU  - Liumiao Gao
AU  - Zhenghong Li
AU  - Zhiyuan Yan
AU  - Chaowei Wang
AU  - Yang Chen
AU  - Jiawen Li
AU  - Yanlei Hu
AU  - Dong Wu
AU  - Jincheng Ni
PY  - 2026
DA  - 2026/10/02
JO  - Science Advances
DO  - 10.1126/sciadv.aei3860
UR  - https://www.science.org/doi/10.1126/sciadv.aei3860
AB  - Controlling the direction of light emission on the subwavelength scale is a key to manipulating light and improving efficiency in optical sensing and quantum information processing. In functional metasurfaces, photonic spin angular momentum is widely used to control the propagation of light emission by geometric phase, but it is challenging to accomplish using monolayer materials because of lacking optical resonance in atomic thickness. Furthermore, the manipulation of the optical geometric phase based on spin angular momentum beams typically offers only two tunable states. Here, we report optical control of free-space routing of second harmonic generation in monolayer MoS 2 assisted by photonic orbital angular momenta. The experimental directionality of the second harmonic light can reach 0.84. Moreover, we can dynamically route the second harmonic generation signal on the engineered monolayer MoS 2 with four directions, showing high-order information encryption. Our findings thus provide great flexibility and more degrees of freedom in nonlinear optical modulation, integrated photonics, and dynamic flat optics.
SN  - 2375-2548
ER  -