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Alignment procedure
1. Align the laser visually so that the beam runs roughly along the axis. This can be done by holding
a piece of card at the far end of the axis to show the beam position. For information relating to
mounting the HS20 onto the machine then refer to Section 2: Mechanical Installation.
Note: It is recommended that when adjusting the locking screws on the alignment plate that there
is no slack, as this can cause further movement when finally tightened.
2. Mount the interferometer in front of the laser.
Translate the optic assembly so the return beam from the interferometer assembly enters the lower
aperture on the laser head. Make sure the interferometer assembly is nominally square with the
laser head.
Figure 41 - Interferometer translation adjustment
Correct return beam position on the HS20 shutter is shown below
Figure 40 - Interferometer mountings
X
X
Figure 42 - Correct return beam position
✓
41
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