Polarizing Beam Splitter
Application ID: 31041
A Gaussian beam is incident on a 45-degree thin-film stack embedded in glass material prisms. The thin-film stack is designed from alternating high and low refractive index materials. The wave will be refracted at the Brewster angle at each internal interface. Thus, mainly p-polarized waves (polarization in the plane of incidence) will be transmitted, whereas mainly s-polarized waves (polarization orthogonal to the plane of incidence) will be reflected. Changing the spot radius for the Gaussian beam modifies the polarization discrimination.
The reflectance and transmittance spectra are calculated for different Gaussian beam spot radii.
The app automatically calculates the phase expressions necessary for the Electromagnetic Waves, Beam Envelopes interface, when the user changes the design parameters.
This application example illustrates applications of this type that would nominally be built using the following products:
however, additional products may be required to completely define and model it. Furthermore, this example may also be defined and modeled using components from the following product combinations:
The combination of COMSOL® products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. Particular functionality may be common to several products. To determine the right combination of products for your modeling needs, review the Specification Chart and make use of a free evaluation license. The COMSOL Sales and Support teams are available for answering any questions you may have regarding this.