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This work investigates the influence of incident light polarization on the holographic performance of azopolymer-based nanocomposites doped with gold nanoparticles (Au-NPs). Thin films of poly-N-epoxypropylcarbazole_SY3 (PEPC-co-SY3) with different Au-NP concentrations were synthesized and subjected to holographic recording using various polarization configurations, including linear (±45°), circular (RCP/LCP), and vortex beams. The diffraction efficiency (DE) was analyzed in relation to the polarization state, beam structure, and Au-NP concentration. UV-Vis spectroscopy was employed to assess the changes in absorption and correlate them with holographic behavior. Results show a significant enhancement of DE due to the presence of Au-NPs, with maximum values up to ~40% under optimized conditions. Additionally, exposure to optical vortex beams led to unique light-induced modifications, suggesting the possibility to recording diffraction optical element (DOE), those are not achievable with conventional phase gratings. Moreover, the films exhibited a distinct anisotropic response, which was highly dependent on the polarization states of the beams used during the recording process. These findings support the potential of Au-NP azopolymer nanocomposites for advanced polarization-sensitive photonic applications.

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Polarization Properties of Doe Recorded on Au-NPs Azopolymer Nanocomposites

  • 会议论文

  • 发表日期：

    2025年

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  • Vladislav Botnari,
  • Elena Achimova,
  • Vladimir Abaskin,
  • Alexei Mesalkin,
  • Veronica Cazac,
  • Constantin Losmanschii

摘要

This work investigates the influence of incident light polarization on the holographic performance of azopolymer-based nanocomposites doped with gold nanoparticles (Au-NPs). Thin films of poly-N-epoxypropylcarbazole_SY3 (PEPC-co-SY3) with different Au-NP concentrations were synthesized and subjected to holographic recording using various polarization configurations, including linear (±45°), circular (RCP/LCP), and vortex beams. The diffraction efficiency (DE) was analyzed in relation to the polarization state, beam structure, and Au-NP concentration. UV-Vis spectroscopy was employed to assess the changes in absorption and correlate them with holographic behavior. Results show a significant enhancement of DE due to the presence of Au-NPs, with maximum values up to ~40% under optimized conditions. Additionally, exposure to optical vortex beams led to unique light-induced modifications, suggesting the possibility to recording diffraction optical element (DOE), those are not achievable with conventional phase gratings. Moreover, the films exhibited a distinct anisotropic response, which was highly dependent on the polarization states of the beams used during the recording process. These findings support the potential of Au-NP azopolymer nanocomposites for advanced polarization-sensitive photonic applications.