{
  "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.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230027, China.",
    "Laser Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.",
    "State Key Laboratory of Analog and Mixed-Signal VLSI, Institute of Microelectronics, Faculty of Science and Technology, University of Macau, Macau SAR, China.",
    "State Key Laboratory of Opto-Electronic Information Acquisition and Protection Technology, Anhui University, Hefei 230601, China."
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 14,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Xianglong Wang",
      "orcid": "0009-0008-7064-2355"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Xinghao Wang"
    },
    {
      "affs": [
        0
      ],
      "name": "Xueli Jiang"
    },
    {
      "affs": [
        0
      ],
      "name": "Shibo Xu"
    },
    {
      "affs": [
        0
      ],
      "name": "Zhaohui Ye"
    },
    {
      "affs": [
        0
      ],
      "name": "Liumiao Gao"
    },
    {
      "affs": [
        0
      ],
      "name": "Zhenghong Li"
    },
    {
      "affs": [
        2
      ],
      "name": "Zhiyuan Yan"
    },
    {
      "affs": [
        0
      ],
      "name": "Chaowei Wang",
      "orcid": "0000-0002-9963-9917"
    },
    {
      "affs": [
        0
      ],
      "name": "Yang Chen"
    },
    {
      "affs": [
        0
      ],
      "name": "Jiawen Li",
      "orcid": "0000-0003-3950-6212"
    },
    {
      "affs": [
        0
      ],
      "name": "Yanlei Hu",
      "orcid": "0000-0002-4468-6142"
    },
    {
      "affs": [
        0
      ],
      "name": "Dong Wu",
      "orcid": "0000-0003-0623-1515"
    },
    {
      "affs": [
        0,
        3
      ],
      "name": "Jincheng Ni",
      "orcid": "0000-0001-9308-4511"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/00bxwg1tcbnck.bib",
  "cited_by": 0,
  "doi": "10.1126/sciadv.aei3860",
  "fulltext_url": null,
  "id": "00bxwg1tcbnck",
  "issns": [
    "2375-2548"
  ],
  "landing_url": "https://www.science.org/doi/10.1126/sciadv.aei3860",
  "language": null,
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2504|Metamaterials and Metasurfaces Applications"
    ]
  ],
  "openalex": "W7214983134",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-02",
  "publisher": "American Association for the Advancement of Science (AAAS)",
  "ris": "https://research.draconitic.com/paper/00bxwg1tcbnck.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:41Z",
      "native_id": "10.1126/sciadv.aei3860",
      "source": "crossref",
      "url": "https://www.science.org/doi/10.1126/sciadv.aei3860"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2504|Metamaterials and Metasurfaces Applications",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Nonlinear directional emission on monolayer MoS ₂ by optical orbit-orbit coupling",
  "title_text": "Nonlinear directional emission on monolayer MoS ₂ by optical orbit-orbit coupling",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:41Z",
  "url": "https://research.draconitic.com/paper/00bxwg1tcbnck",
  "venue": "Science Advances",
  "versions": []
}