© 2011 Thorlabs
109Operating the Beam Profiler
diameter you should only use this option with well-justified reasons.
Measurement Parameters
Setting the wavelength is mandatory for correct measured M². If the lasing
wavelength is unknown, measure the wavelength using a spectrometer.
Attention
Do not use the nominal wavelength but the actual (measured)
wavelength of the laser! Accuracy of this input determines the
measurement accuracy.
Timeout is the max. waiting time for a valid camera image. This is to allow the
Autoexposure function to obtain a valid camera image
Scan Range
The Scan Range determines the range from where to where sleigh of the translation
stage is driven during a measurement. Start has to be at least 5 mm smaller than
Stop and greater-than-or-equal to 0 mm. Valid values for Stop are
5 mm < Stop < stage length.
The number of Min. Data Points give the (minimum) number of Z positions. The
actual number also depends on the Scan Method.
Scan Method
The software provides two different kinds of scan methods, the Normal Scan and
the Coarse Scan.
The Coarse Scan just takes the sleigh of the translation stage from Start to Stop
(or vice versa depending on the position of the sleigh before starting the
To Next Page
Loading...
Need help?
General
