余佳益教授(吴继栋博士生)在鲁棒高阶庞加莱光束合成方面取得重要研究进展

2026年01月29日 | 作者: | 点击数:109


Abstract: We propose a compact strategy for the experimental synthesis of randomly structured sources with robust higher-order Poincare polarization states by manipulating the second-order spatial coherence structure through nonuniform optical coherence engineering. This approach employs a pseudomode representation of the cross-spectral density matrix and utilizes a single amplitudeonly digital micromirror device, combined with a common-path interferometer system, to construct patterns, enabling the near-realtime synthesis of sources. Experimental results demonstrate that nonuniform optical coherence engineering significantly enhances the robustness of higher-order Poincare sphere beams, allowing them to preserve polarization integrity throughout propagation and overcoming the limitations of conventional scalar and vector uniform optical coherence engineering approaches. Furthermore, the synthesized beams exhibit strong resilience to turbulence, with the encoded polarization states preserved with high quality in the far field (focal plane). We believe that optical coherence engineering has the potential to extend the capabilities of existing resilient optical systems, offering a promising solution for compensation-free optical communication systems.