Gauss FFT

Gauss (FFT)

The input result data are recalculated by parabola fit procedure to correspond to Number of FFT Points. This value effects on the angular resolution. An incident Gaussian beam has two intrinsic parameters: Waist Radius and Defocus and the external parameter is the incidence angle (Fixed Beam Angle) calculated with respect to the beam axis. The minimum Waist Radius depends on the input data angular scanning range: the larger range - the smaller possible Waist Radius. The maximum Waist Radius depends pro rata on Number of FFT Points. The Defocus is the distance along beam axis from the crossing point with the cover interface and the waist position. If waist is placed in the cover the sign of defocus is negative otherwise the sign is positive. The user is able to get several structure responses from the incident Gaussian beam defined by the Output Type and Output (Reflection/Transmission) controls in the form of graph or table in editor window and in the format defined by the Output Decimal Digits and Output (Real; Imagine/Module; Phase) controls placed under the pagers area.

If the buttons Graph and Result Window are active this means that the result is already calculated otherwise it is necessary to press button Calculate.

This page contains the intrinsic checking of the input parameters on corresponding to the input data. This checking can be considered only as a guide and the user responsibility is to set reasonable parameters.