Optical Component: Plastic dielectric mirrors for THz frequency range

The invention relates to an optical component for effecting frequency-selective reflection in the gigahertz and terahertz frequency ranges and for effecting wave permeability. The inventive component comprises: at least one first layer (1,3,5) made of a first material (m1), which is optically permeable to electromagnetic radiation of a reference frequency (f) between 5 gigahertz (GHz) and 10 terahertz (THz) and which has a first refractive index (n1) and an optical thickness of approximately one-fourth the wavelength (lambda) of the electromagnetic radiation of the reference frequency (f) in the first material (m1); at least one second layer (2) is situated underneath the first layer (1) and is made of a second material (m2), which is optically permeable to electromagnetic radiation of a reference frequency (f) and which has a second refractive index (n2) and are optical thickness of approximately one-fourth or one-half the wavelength (lambda) of the electromagnetic radiation of the reference frequency (f) in the second material (m2), whereby the first refractive index (n1) and the second refractive index (n2) are different.