Near-perfect absorption in epsilon-near-zero structures with hyperbolic dispersion

Abstract

We investigate the interaction of polarized electromagnetic waves with hyperbolic metamaterial structures, whereby the in-plane permittivity component ${\epsilon }_x$ is opposite in sign to the normal component ${\epsilon }_z$. We find that when the thickness of the metamaterial is smaller than the wavelength of the incident wave, hyperbolic metamaterials can absorb significantly higher amounts of electromagnetic energy compared to their conventional counterparts. We also demonstrate that for wavelengths leading to $\Re ({\epsilon }_z)\approx 0$, near-perfect absorption arises and persists over a range of frequencies and subwavelength structure thicknesses.

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Cited by in corpus (7)

• Epsilon-Near-Zero Response and Tunable Perfect Absorption in Weyl Semimetals
• A unified theory for perfect absorption in ultra-thin absorptive films with constant tangential electric or magnetic fields
• Waveguide Modes in Weyl Semimetals with Tilted Dirac Cones
• Dynamic coherent perfect absorption in nonlinear metasurfaces
• Controllable nonreciprocal optical response and handedness-switching in magnetized spin orbit coupled graphene
• Resonant absorption and amplification of circularly-polarized waves in inhomogeneous chiral media
• Resonant absorption of electromagnetic waves in transition anisotropic media