Fig. 1. Construction of top layer of multi-band metamaterial absorber

Fig. 2. Construction of top layer of multi-band metamaterial absorber with photosensitive silicon

Fig. 3. [in Chinese]

Fig. 3. Schematics of multi-band absorber and polarization wave. (a) Front view and wave vector; (b) side view

Fig. 4. Reflectance and absorbance curves of multi-band terahertz absorber

Fig. 5. Perfect reflectance and absorbance curves of multi-band terahertz absorber

Fig. 6. Surface electric-field distributions at different frequencies. (a) 0.6865 THz; (b) 1.024 THz; (c) 1.748 THz; (d) 2.23 THz

Fig. 7. Absorbance curves of multi-band terahertz absorber with different dimensional spacings

Fig. 8. Absorbance curves of multi-band terahertz absorber with different thicknesses of dielectric

Fig. 9. Absorbance curves of multi-band terahertz absorber with different conductivities (curves overlap when σ=1 S^-1·m and σ=20000 S^-1·m)

Fig. 10. Amplified absorbance curves of multi-band terahertz absorber at low frequency (curves overlap when σ=1 S^-1·m and σ=20000 S^-1·m)

Fig. 11. Surface electric-field distributions at low-frequency absorption peak at different conductivities