NAOJ GW Elog Logbook 3.2
Participants : Yuhang, Eleonora
By sending the fiber output to the collimators (PAF-X-7-C) and (PAF-X-11-PC-C) we got the output beam and we could adjust the z of the collimator to make the beam collimated, and x and y to make it go straight.
We used beam profiler to measure the dimension of the collimated output beam:
- PAF-X-7-C has a diameter of 2000um
- PAF-X-11-PC-C has a diameter of 3300um
We put a label on the collimator holders to specify the beam diameter that we measured (that is the dimension of the collimated beam that they need in input).
They are now well aligned and should not be touched.
More info on the collimator mechanics and aligment procedure can be found here:
Useful tip to adjust the z of the collimator: if the beam is diverging the z screws should be turned counter clock wise, if it is converging they should be turned clockwise.