Electrically-controlled dynamic optical component comprising a metasurface

A method for producing an optical component comprising a planar metasurface, providing optical properties which are controllable by a control signal, said method comprising the steps of:

• providing a first substrate,
• providing a top layer,
• producing an array of scattering structures comprising a metal on a surface of the first substrate, and
• creating a repeating pattern of unit cells comprising at least two different scattering structures in the array, by application of a first substance comprising a dielectric material and having a first refractive index on at least a part of a surface of a first fraction of the scattering structures and application of a second substance comprising a polymer and having a second refractive index on at least a part of a surface of a second fraction of the scattering structures,
• wherein the second substance differs from the first substance and provides a variable refractive index depending on the control signal, wherein the real part n and/or the imaginary part K of the variable refractive index of the second substance is shiftable by the control signal to the respective value of the first substance.