1 Safety Precautions
• Start measurements with the lowest laser power and a small aperture
of the camera lens.
• Increase laser power step by step and check the intensity on the cor-
responding image. Make sure that the sensor does not run into satu-
ration.
• Bright parts in the experiment, like reflections on walls or big parti-
cles, will limit the maximum laser power. Modify the optical arrange-
ment of your setup in order to remove bright reflections from the
camera image.
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