Waist Location 6.1.2.3
The Waist Location (Z
01
) is normally referenced to the front principal plane of the input lens. However in
BeamSquared this location is not represented by any accessible physical structure. In some cases the waist
location needs to be known relative to the laser faceplate. For this reason two different ways to display the
input beam waist location are included.
Waist Location Relative to Principal Plane 6.1.2.3.1
The first method applies when the Z
laser
value is set to zero. Per ISO, the Waist Location results are computed
from the first principal plane of the lens (location H1 in in the figure below).
Equation 9 – Waist Location when Z
laser
= 0
Because the lens principle plane is not accessible in BeamSquared, the equation is modified slightly to be
measured from the reference datum which is the red BeamSquared case at the input aperture.
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