Before Lens; After Lens; Figure 5-33: Calculation Results Of The Natural Beam Before Lens - Gentec Beamage M2 User Manual

Beamage-M² User Manual

5.4.1. Before lens

These are the beam parameters derived from those measured and calculated in the
either "X" or "Y" axis:
z0: Position of the "natural" beam waist relative to the lens.
d0: Diameter of the "natural" beam waist where ��
ZR: Rayleigh length of the "natural" beam.
Div: Divergence of the original beam.
The section beneath XY Parameters
and "Y" axies.
Delta Z: Distance between ��
Astigmatism: How far apart the

Figure 5-33: Calculation results of the natural beam before lens

5.4.2. After Lens

Calculated parameters of the beam after the lens:
z0: Position of the focused beam waist relative to the lens.
d0: Diameter of the focused beam waist where ��
ZR: Rayleigh length of the focused beam.
Div: Divergence of the focused beam.
shows a comparison of the "X" and "Y" parameters.
The XY Parameters
Delta Z: Distance between the focused ��
Astigmatism: Value of the focused Delta Z compared to the focal length ��:
Revision 6
= 2��
0
is slightly different as it shows a comparison of the parameters on "X"
and ��
on the propagation axis.
0�� 0��
waists are, compared to the focal length ��:
X and Y
= 2��
0
and ��
0�� 0��
.
0
.
0
on the propagation axis.
33
After Lens box in
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0�� 0��
.
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0�� 0��
.
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