Ray Optics Module Updates
For Ray Optics Module users, COMSOL Multiphysics® version 6.4 provides enhancements to scattering simulations, a new feature that accounts for reduced intensity and power of reflected rays from surface roughness, and additions to the Optical material library. Read more about these updates below.
New Scatter Mode in Scattering Domain Feature
This new functionality enables the simulation of light–tissue scattering, light scattering in humid environments, and other scenarios involving multiple scattering dynamics. A new Scatter option in the Scattering Domain feature makes this possible by allowing rays scattered by particles within a medium to be traced. When the Scatter option is selected, you can choose between two scattering phase functions: Rayleigh, suited for symmetric scattering from small particles, and Henyey–Greenstein, which is a common approximation for asymmetric scattering from particles or droplets that are relatively larger.
Rayleigh Surface Roughness Model
It is now possible to account for the reduction in reflected ray intensity and power due to surface roughness using the new Rayleigh roughness option, which is available in the Mirror and Wall features when ray intensity or power is computed. In the Wall feature, this option appears when Specular reflection is selected in the Wall Condition section.
Optical Material Library Updates
Within the Optical material library, available in the Ray Optics Module and Wave Optics Module, 12 new glasses from Schott AG and 10 new glasses from CDGM Glass have been added. These new glasses contain all of the material properties required to perform a structural-thermal-optical performance (STOP) analysis.