The visual and transformational qualities of light, colour, reflection and movement are central themes in Kotter’s work. From mirrors, plexiglas, stainless steel or reflective photographic colour images, he creates boxes or tubes, in and onto which light beams of varying colours are projected. Kotter focuses on their physical and artistic qualities and thus creates colourful and graphic virtual sculptures with a rhythmic structure.
How one experiences a space constantly changes due to a changing reflection of these phenomena. Both on a large and small scale, he creates works that are not so much independent from specific physical matter as they are from the perception of the spectator. In large spaces, for example, he can create a virtual sculpture of light, colour and movement or build an object of alternating lines and bars of colour. The spectator is thus placed in a dialogue of space and light in which concepts such as tangibility and infinity become relative.