A new method, that involves Evanescent-Wave Cavity Ring-Down Spectroscopy (EW-CRDS), is presented. This method is useful for the study of thin films on optical solid surfaces. The new design of experimental set-up incorporates a semicylindrical prism with a plane surface where the Total Internal Reflection (TIR) effect appears. The antireflex (AR) coated cylindrical surface of the prism induces the stability of resonant cavity. The evanescent wave

In this paper, a design for a reliable antireflection coating is proposed. This is, probably, among the best combinations of a maximum imposed number of six layers for an antireflection coating, having a very good efficiency, a good reproducibility and a durable coating package. The applications refer to visible spectral range, widely ordered in optical industry.

There are many situations when, for the proper working, an opto−electronic device requiring optical components does not change the polarization state of light after a reflection, splitting or filtering. In this paper, a design for a non−polarizing beam splitter plate is proposed. Based on certain optical properties of homogeneous dielectric materials we will establish a relia− ble thin film package formula, excellent for the start of optimization

In this paper, a guide to design optical coatings for polarizing beam splitter cubes, starting from certain imposed situations, is presented. For this purpose, will be presented two main situations: the criterion by which we choose materials for interferential package if the glass prisms is imposed and, on the other hand, how to choose the glass for prisms, depending on the materials for interferential package that we need to build.