• Chinese Optics Letters
  • Vol. 23, Issue 6, 061101 (2025)
Zhenli Li, Rongyi Lin, Min Lin*, Luping Du, and Xiaocong Yuan
Author Affiliations
  • Nanophotonics Research Center, Institute of Microscale Optoelectronics & State Key Laboratory of Radio Frequency Heterogeneous Integration, Shenzhen University, Shenzhen 518060, China
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    DOI: 10.3788/COL202523.061101 Cite this Article Set citation alerts
    Zhenli Li, Rongyi Lin, Min Lin, Luping Du, Xiaocong Yuan, "Scanning-less optical near-field characterization for structured light fields based on nonlinear effects," Chin. Opt. Lett. 23, 061101 (2025) Copy Citation Text show less

    Abstract

    Conventional methods for near-field characterization have typically relied on the nanoprobe to point-scan the field, rendering the measurements vulnerable to external environmental influences. Here, we study the direct far-field imaging of the near-field polarizations based on the four-wave mixing effect. We construct a simulation model to realize the instantaneous extraction of the near-field distributions of a wide range of structured light fields, such as cylindrical vector vortex beams, plasmonic Weber beams, and topological spin textures, including photonic skyrmions and merons. This method is valuable for the studies on manipulation of structured light fields and light–matter interaction at the micro/nano scales.
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    Zhenli Li, Rongyi Lin, Min Lin, Luping Du, Xiaocong Yuan, "Scanning-less optical near-field characterization for structured light fields based on nonlinear effects," Chin. Opt. Lett. 23, 061101 (2025)
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