2: Operation
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For example, if you tighten the upper screw, you move the beam to the top. If you tighten the right screw,
the beam will move to the right.
While adjusting the beam you should do the following:
•
Try to change the direction of the beam by loosening the screws first.
•
Tightening the screws too hard will deform the plastic, resulting in permanent damage and
making a correct adjustment impossible.
•
After adjusting the laser beam, slightly turn the screws without changing the beam.
Notes
Adjust the system in a dark room against a white wall and try to detect the light of the
laser beam. Use a Gershun Tube (GER-KIT available from Ocean Optics) and start the
adjustment with an aperture > 3° to pre-adjust the system. Then it is easier to adjust the
system with a 3° aperture. To achieve an optimal adjustment, use the 1° aperture as the
last step of your alignment
