Document No 50398-001 Rev F 02 Aug 2020
8
of
20
8
of
20
1.4 Operating Limits
The graphics below are intended to give a visual indication of the recommended operating space for BeamWatch. If
BeamWatch is operated outside of this space, it may be more difficult to see the curvature of the caustic or the beam may
be large enough at the edges of the image that it is out of focus.
•
Optimal has at least 3 Rayleigh lengths on both sides of the waist, with the waist at the center of the image
•
Near Optimal has at least 3 Rayleigh lengths on one side of the waist, with the waist at the end of the image
•
Acceptable has at least 1.5 Rayleigh lengths on both sides of the waist, with the waist at the center of the image
When using these graphics, take the M2 value and
reference it against the waist width of the beam.
If the beam falls within the plotted areas, then it is within
the range for BeamWatch to give stronger results.
Use caution as the beam falls into the Acceptable range;
these results are not as strong.
