THORLABS PM100USB Operation Manual page 40

PM100USB
· Optical Power Range specifies the minimum and maximum measurable power. Exceeding
the upper limit leads to sensor saturation and wrong measurement results. If pulsed signals
are measured, the pulse peak power must not exceed the max. measurable power in order
to avid saturation. Underrunning the lower limit leads to increased measurement uncer-
tainty due to noise impact.
· Max. Average Power Density must not be exceeded to avoid damages to the sensor. For
definition and calculation, please see section
· Max. Pulse Energy Density is an alternative specification to max. average power density,
which must not be exceeded. For definition and calculation, please see section
tions .
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· Max. Intermittent Power (2 min. Max.) can be applied to the sensor for max. 2 minutes
without damages to the sensor. In case of pulsed signals, the average power of the pulse
train is considered. Please note that this specification is higher than the max. measurable
power, consequently the sensor will enter saturation and the measurement result will not be
correct.
d. Pyroelectric Energy Sensors (ESxxxC Series)
· Optical Energy Range specifies the minimum and maximum measurable energy. Take
care about the correct trigger level setting, particularly if measure energy levels, close to the
lower limit of the measurement range - sensor noise may interfere the correct triggering to
the pulse edge, which leads to wrong measurement results.
· Max. Power Density is related to the pulse peak power and must not be exceeded to avoid
damages to the sensor. For definition and calculation, please see section
· Max. Pulse Energy Density is an alternative specification to max. average power density,
which must not be exceeded. For definition and calculation, please see section
tions .
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· Max. Average Power must not be exceeded to avoid damages to the sensor as a con-
sequence of overheating.
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Calculations .
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Calcula-
Calculations .
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Calcula-
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