BC207 Series
Chapter 9: Application Note
Rev: 8.1, 10-Jan-2022
Page 156
© 2022 Thorlabs
is the dial distance of peak position's pixel from the reference position (= sensor center).
Centroid Position
X, Y
and
R
position (first moment), calculated over all pixels with respect to the above reference
position.
X= SUM [x * p(x,y)] / I
Y= SUM [y * p(x,y)] / I
where:
p(x,y)
intensity at location (x,y);
I
total intensity;
SUM
of pixels taken over the entire area
AD Saturation
Saturation level of the instrument's AD converter. For a good SNR (signal-to-noise ratio) the
saturation level should be not below 40% and not be above 95%.
Total Power
Total power within the
.
Peak Density
Power on peak pixel divided by its area (in µm²)
9.4 Ellipse (Fitted)
The beam shape is fit to an ellipse using the set clip level.
Diameter (clip level)
is given for the minor axis (
min
), major axis (
max
) and their arithmetic
mean
value.
Ellipticity
and
Eccentricity
of the beam are defined in ISO 11146-1 as
40
Summary of Contents for BC207UV
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