Use the Release from Electric Field node to release rays from selected boundaries, with initial intensity and polarization based on the incident electric field at that boundary. The electric field may be user defined or solved for in a previous study.
The rays are always released in a direction normal to the selected boundaries. Select the Reverse direction check box to release rays in the normal direction on the opposite side of the selected boundaries. The direction of the released rays is indicated by an arrow in the Graphics window.
Enter values or expressions in the table for the Electric field E (SI unit: V/m) based on space dimension. If the electric field is computed by another physics interface then it can be selected from the list.
The Use frequency from the coupled physics interface as the ray frequency check box is cleared by default. If this check box is cleared, the wavelength or frequency of the released rays may be specified depending on the option selected from the
Wavelength distribution of released rays list in the physics interface
Ray Release and Propagation section:
If this check box is selected, then the frequency or wavelength of the released rays will be determined by the Frequency Domain or
Wavelength Domain study in the
Values of Variables not Solved For section of the
Time Dependent solver settings. Typically this
Frequency Domain or
Wavelength Domain study would first be used to solve for the electric field, using either the Electromagnetic Waves, Frequency Domain interface or the Electromagnetic Waves, Beam Envelopes interface.