Toptica FemtoFiber pro IR, Manual, Page: 93 / 108

6. Appendix
Page 89
Status: 6.9.18
6.9.3 Tuning the internal SF 10 Compressor (only UCP and TVIS)
Before being emitted at one of the FemtoFiber
®
pro apertures, the amplified pulses can be manipulated
by the built-in SF 10 compressor in order to adjust the pulse length.
The SF 10 compressor consists of a set of two highly dispersive prism, one of which can be moved by a
motor in order to adjust the amount of dispersion applied to the pulses. The motor for the prism can easily
be accessed by the user with the following commands. All positions of the prism stage are entered in µm,
relative to a fixed position (reference position).
In order to query the current prism position use the following property:
ffpro.arm0.axSF10pos (floating point property, read-only)
current motor position in µm
In a Multi-Arm System the additional amplifiers can be accessed in a similar way by simply replacing
“arm0” with “arm1”, “arm2” or “arm3”, respectively.
Example:
>>> ffpro.arm0.axSF10.pos
1747.3
>>>
For moving the prism two different methods are possible:
ffpro.arm0.axSF10.moveabswait() (command, 1 parameter)
Move motor to absolute position and wait for arrival.
parameter: absolute position in µm
Example:
>>> ffpro.arm0.axSF10.moveabswait(15000)
1.0
>>>
While the prism is moving, the laser will not accept any further commands. It is also possible to send the
motor to the desired position without waiting for it's arrival:
ffpro.arm0.axSF10.target (floating point property)
motor target position in µm
Example:
>>> ffpro.arm0.axSF10.target = 1500
>>>