133
Revision 00 EN - 01/2021
HP-MSM-HB
35,0(6
Fig. 24.21: Dialogue window
Symmetry check
in Cartesian coordinates of an elliptic beam
The abscissa in Fig. 24.21 on page 133 shows the angle and the ordinate shows the beam radius with the
intersection line at 86 % of the total power.
Fig. 24.22: Dialogue window
Symmetry check
in polar coordinates of an elliptic beam
On the screen the curves appear in different colors. The radius is indicated in pixel coordinates. The mini-
mum as well as the maximum of the radius values can be chosen. On the right side the standard deviation of
the different radius values are indicated. These values give detailed information on the symmetry of the beam
distribution.
Well aligned resonators reach standard deviations in the range of 3 % to 5 %. Partially, values in a 1 % and
2 % range are possible.
A presentation in polar coordinates is also possible (Fig. 24.22 on page 133). The drawn in lines contain
86 % up to 10 % of the detected power. On the screen the graphs have different colors. X- and y-axis scale
in pixel values.
