Highly Efficient Broadband Light Absorber Based on Nonuniform Hyperbolic Metamaterial Film

Figure 6

(Color online) the absorption coefficient of the nonuniform metamaterial film (curve 3) compared with MM layer with the fixed optical axis orientation (curves 1 and 2 correspond to and ): (a) as a function of the wavelength (at normal incidence) and (b) as a function of the tangential wavevector component of the incident light (nm); the thickness of the film is nm. Dotted lines show the absorption coefficient of the metamaterial half-space and .

(a)

(b)