The reflection coefficients of multilayer anti-counterfeiting optical films for S-polarized wave

摘要

Considering the difference of phase-shift direction and amplitude attenuation direction when the optical wave propagates in conductive medium, with the boundary conditions of optical wave at the interface of the media, we derive the recurrence formula reflection coefficient for the S-polarized optical wave in the multilayer film. Given a calculating example for multilayer anti-counterfeiting optical films, the result shows that thickness of metal film has important effect on the reflection coefficient of light, and the multilayer film has stronger reflection effective of narrow band.