Generating complex vectorial optical fields via surface lattice resonances.

Vectorial optical fields (VOFs) with extra degrees of freedom hold promise for many photonic applications. However, current methods to generate VOFs are either bulky in size or exhibit limited functionalities. Here, we demonstrate a tunable VOF generator by exciting plasmonic surface lattice resonances (SLRs) with axial symmetry. By meticulously arranging bilayer circular arrays with opposite handedness, we achieve a high Q-factor of 103 via just a few particles despite the general belief that too small array size suppresses the SLRs. This work presents tunable complex VOFs with distinct inhomogeneous spatial polarization distributions, which may enable various applications in integrated and polarization optics.

Citation

Simeng Wu, Cheng Yin, Shuaijie Yuan, Yinlong Luo, Xuefen Kan, Yuqiu Zhang, Qiang Yu, Jian Wu. Generating complex vectorial optical fields via surface lattice resonances. Optics letters. 2024 Jul 01;49(13):3564-3567

PMID: 38950210

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