Gentec-EO Beamage-3.0 - Manual (Page 45)

Beamage-3.0 User Manual Revision 6.0 44
5.4. DIVERGENCE
The divergence tab opens when the divergence button is clicked in the Main Controls (refer to section
4.5.4).
To compute the divergence and abide by the ISO-11146-1:2005 standard, the first step is to place an
aberration-free lens between the Beamage-3.0 and the laser. The lens should be placed in the far-field of
the laser beam while the Beamage-3.0 is at the lens
’ focal point. The second step is to enter the lens’
focal length in the software. Since the focal length is wavelength dependent, make sure to use the correct
value for your laser in the prior settings. The divergence in both main axes (x and y) are computed as
defined by the ISO-11146-1:2005 and ISO-11146-2:2005 standards and displayed at the bottom of the
“Divergence” tab (refer to annex A).
Figure 5-11 Divergence Tab
Warning
The Beamage-3.0 sensor must be placed precisely at the focal point, not
at the beam waist.