© 2011 Thorlabs
75Operating the Beam Profiler
3.4.9
Power Ranges
Both BC106-VIS and BC106-UV models offer a different input power range.
Maximum and minimum applicable power depends on beam diameter and the
selected optical filter and wavelength.
The wavelength of maximum response is chosen: for BC106-VIS 550 nm, for
BC106-UV 200 nm.
Both unbroken lines indicate the BC106 power range without any filter applied.
When an attenuation filter is applied the appropriate power range is shifted towards
higher values. Displayed dashed lines stand for 40 dB filters only, the highest value
available in the supplied within the filter wheel. Intermediate filter settings are not
displayed but are located between drawn through and dashed lines.
Since the max. and min. applicable power depends on the actual beam diameter
you need to read out the diagram by selecting the beam diameter first. Choose the
diameter on the horizontal scale and go up to the power range curve representing
your Beam Profiler model. Then go left and read out the power level.
Note
The power readings are exemplary for the wavelength 550 and 200 nm, respectively,
and need to be modified according to the wavelength depending response curve.
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