Application Condition of Effective Medium Theory in Optical Composite System

Fig. 1. Schematic diagram of nanocrystal-doped composite crystal structure and equivalent crystal model. (a) Schematic diagram of nanocrystal-doped composite crystal structure; (b) equivalent crystal model

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Fig. 2. Original transmission spectra of composite system and transmission spectra of equivalent crystal under different parameters. (a) $ε_{r}^{A} = 23.0$ , $ε_{r}^{B} = 3.5$ , $w = 0.019 μ m$ , $ε_{r, e f f}^{B r} = 3.55$ ; (b) $ε_{r}^{A} = 12.5$ , $ε_{r}^{B} = 20.0$ , $w = 0.019 μ m$ , $ε_{r, e f f}^{B r} = 19.94$

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Fig. 3. $ε_{r, e f f}^{B r}$ and effective dielectric constant computed by transfer-matrix method varying with dielectric constant of nanocrystal

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Fig. 4. $ε_{r, e f f}^{B r}$ and effective dielectric constant computed by transfer-matrix method varying with doping period and side length of nanocrystal. (a) Doping period; (b) side length of nanocrystal

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Fig. 5. Wavelength dependence of effective dielectric constant and comparison of transmission spectra. (a)(c) Effective dielectric constant computed by transfer-matrix method varying with wavelength and $ε_{r, e f f}^{B r}$ ; (b)(d) comparison between original transmission spectrum and transmission spectrum of equivalent crystal

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Yang Sun, Yongyou Zhang. Application Condition of Effective Medium Theory in Optical Composite System[J]. Acta Optica Sinica, 2023, 43(5): 0524001

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