THORLABS WFS20-14AR, Operation Manual

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© 2007 - 2018 Thorlabs
4 Getting Started
17
Note
When connecting the wavefront sensor head to the PC for the first time, Windows may show an
erroneous error-message:
"The device driver software was not installed correctly"
In most cases, this error message can be ignored and you can proceed to use the WFS. In
case you can not access the WFS through the software, please see the section
Troubleshoot-
ing in the full manual, downloaded from the software website.
Note
Do not forget to remove the dust cover from the Wavefront Sensor.
Attention
Do not stick anything into the Wavefront Sensor's aperture! This may damage the microlens ar-
ray as there is no protective glass in front of it.
Please obeye laser safety rules when handling high power optical beams, particularly focused
beams! Avoid skin irradiation and use laser protection glasses to protect your eyes!
In order to achieve reliable wavefront measurement results, it is necessary to understand the
measurement technique as well as the influence of instrument and software settings. These
settings are described in the following sections; please read them carefully.
4.5 Mounting
WFS20
The WFS20 has four 4-40 threaded taps (1) for use with
Thorlabs ER rods. This is useful for mounting the
WFS20 to the Thorlabs 30 mm cage system assemblies.
Additionally, three taps (2) with M4x0.7 (metric WFS20
versions) or UNC8-32 (imperial WFS20 versions)
threads are located on the bottom of the sensor head for
mounting the WFS20 to standard Thorlabs mounts.
The WFS20 Camera aperture is C-mount threaded as
well. Use the included Thorlabs' SM1A9 adapter (ex-
ternal C-mount thread to internal SM1) to conveniently
mount ND filters, lens tubes (to prevent stray light from
entering the input aperture) or additional optomechanical
components.
WFS30 / WFS40
119