YoheiNishino - 11:18, Thursday 03 March 2022 (2856)
Beam profile measurement in the clean room in ATC
I measured the beam profile of the laser in the ATC clean booth. Yuhang and Michael are doing another experiment, so Aso-san and I will use the reflected light on the beam splitter(see figure 1).
Results:
| width | weist position* | |
| x | 0.135 mm | -39.4 mm |
| y | 0.136 | 6.07 mm |
* start position is two holes (~50 mm) distant from the center of the BS.
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Comments related to this report
I measured the beam profiles again on March 3rd. I took 10 samples for each point and used an average of them.
| width | weist position* | |
| x | 0.1347+- 0.0006 mm | -35.6 +-0.5mm |
| y | 0.139+-0.004 mm | 11.8+-2.3mm |
* start position is two holes (~50 mm) distant from the center of the BS.