Introduction
Thin-film optics is a division of optics that deals with the very thin structured layers of materials. The condition of exhibiting thin-film optics is that the thickness of the layers of the material should in order of visible light wavelength usually about 500nm. At this scale, layers can have remarkable reflective properties based on the difference in refractive index and wave interference between layers, the substrate and the air. The effects called thin-film interference alters the way the optic transmits and reflects light and they are observable in oil slicks and soap bubbles. A dielectric mirror also called is ...
