Evaluation of the selective absorption band of waves in a two-layer dielectric-metal system

The authors investigate the dependence of the selective absorption band of electromagnetic radiation in a two-layer dielectric-metal system on the dielectric properties and thickness of a coating near wavelengths at which in the system total absorption of incident radiation develops. The narrowing of the absorption band of this system due to an increase in the thickness of a coating material and in its refraction index is established.