Physical Optics Propagation Data. For important details see the section on “Physical Optics Propagation”. To use this operand, first define the settings on the POP analysis feature as desired, then press Save on the settings box. The operand will return data based upon the selected settings. If **Surf **is zero, then the saved ending surface number will be used; otherwise, the specified surface will be used as the ending surface. If **Wave **is zero, then the saved wavelength number will be used; otherwise, the specified wavelength number will be used. If **Field **is zero, then the saved field number will be used; otherwise, the specified field number will be used. **Data **determines what data the POP feature will compute and return as follows: 0, 1, 2: The total (Ex + Ey), Ex only, or Ey only Irradiance. 3, 4, 5, 6: Ex-real, Ex-Imaginary, Ey-real, Ey-imaginary. 7, 8: Ex, Ey phase in radians. Undefined **Data **values will return 0. The **Pix# **refers to the desired pixel of the beam. The pixel number is greater than or equal to zero, and less than nx*ny, where nx and ny are the number of columns and rows, respectively. The pixel number is generally defined as p = x + y*nx where x is the integer row number and y is the integer column number, and 0 <= x < nx and 0 <= y < ny. If adjacent POPI operands all have the same **Surf**, **Wave**, and **Field **values, then the POP analysis is done just once and all data returned at one time. Note the POPI operands must be on adjacent rows in the MFE for this efficiency to be implemented. |