Yuanyuan Liu, Huan Liu, Kun Liu, Lu Zhu. Ultra-broadband Perfect Absorber with Rectangular Multilayer Structure[J]. Acta Optica Sinica, 2020, 40(23): 2323001
- Acta Optica Sinica
- Vol. 40, Issue 23, 2323001 (2020)
Fig. 1. Absorber structure. (a) Array structure; (b) unit side view
Fig. 2. Absorption characteristics of rectangular multilayer absorber. (a) Absorption curves of absorbers with different structures; (b) absorption spectra of MSSA structures at different polarization angles
Fig. 3. Distribution of |E| and Ezreal at different wavelengths. (a) 730 nm; (b) 1165 nm; (c) 2005 nm; (d) 3295 nm
Fig. 4. Distribution of |H| at different wavelengths. (a) 730 nm; (b) 1165 nm; (c) 2005 nm; (d) 3295 nm
Fig. 5. Performance curves of different metal materials. (a) Absorption rate; (b) structural impedance
Fig. 6. Performance curves of different non-metallic materials. (a) Absorption rate; (b) average absorption rate
Fig. 7. Influence of different parameters on absorption performance of absorber and its average absorption rate. (a) P; (b) w1; (c) w2; (d) h1; (e) h2
Fig. 8. Influence of incident angle on absorber absorption rate under different polarization modes. TM mode (a) absorption spectrum, (c) absorption curves; TE mode (b) absorption spectrum, (d) absorption curves
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Table 1. Parameter setting of absorber structure
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Table 2. Comparison of absorption performance of different metal materials
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