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Parallel finite-difference time-domain modeling of an opal photonic crystal

机译:蛋白石光子晶体的并行有限差分时域建模

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摘要

This work describes a computational approach for the optical characterization of an opal photonic crystal (PC). We intend, in particular, to validate our approach by comparing the transmittance of a crystal model, as obtained by numerical simulation, with the transmittance of the same crystal, as measured over 400- to 700-nm wavelength range. We consider an opal PC with a face-centered cubic lattice structure of spherical particles made of polystyrene (a nonabsorptive material with constant relative dielectric permittivity). Light-crystal interaction is simulated by numerically solving Maxwell's equations via the finite-difference time-domain method and by using the Kirchhoff formula to calculate the far field. A method to study the propagating Bloch modes inside the crystal bulk is also sketched.
机译:这项工作描述了一种蛋白石光子晶体(PC)的光学表征的计算方法。我们尤其打算通过比较通过数值模拟获得的晶体模型的透射率与在400至700 nm波长范围内测得的同一晶体的透射率来验证我们的方法。我们考虑一种蛋白石PC,该蛋白石PC具有由聚苯乙烯(相对介电常数恒定的非吸收性材料)制成的球形颗粒的面心立方晶格结构。通过使用有限差分时域方法对麦克斯韦方程组进行数值求解并使用基尔霍夫公式计算远场,来模拟光-晶体相互作用。还勾画了一种研究晶体内部传播的布洛赫模的方法。

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