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Photonic polymeric structures and electrodynamics simulation method based on a coupled oscillator finite-difference

Ricardo M R Adão, Manuel Caño-García, Christian Maibohm

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    We fabricated 2.5D micropillar arrays using laser-based two-photon polymerization. Our novel simulation method accurately predicts scattering properties for various photonic components.

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    Area of Science:

    • Photonics
    • Materials Science
    • Computational Electrodynamics

    Background:

    • Two-photon polymerization (TPP) is a versatile technique for microfabrication.
    • Accurate simulation of light scattering from microstructures is crucial for photonic device design.

    Purpose of the Study:

    • To fabricate and characterize 2.5D micropillar arrays using TPP.
    • To develop and validate a novel electrodynamics simulation method for photonic components.

    Main Methods:

    • Fabrication of 2.5D micropillar arrays via femtosecond laser-based two-photon polymerization (TPP).
    • Characterization of scattering properties using an angular detection setup.
    • Development of a novel 2D coupled Oscillator Finite-Difference Time-Domain (O-FDTD) algorithm based on the Lorentz Oscillator Model and leapfrog time differentiation.

    Main Results:

    • Successful fabrication of 2.5D micropillar arrays.
    • Experimental scattering properties were compared with simulation results.
    • The O-FDTD method demonstrated accuracy in predicting the behavior of various photonic components.

    Conclusions:

    • The developed O-FDTD simulation method is a reliable tool for analyzing photonic devices.
    • TPP is effective for creating complex microstructures for photonic applications.
    • Accurate simulation and experimental characterization are key to advancing photonic device development.