NAOJ GW Elog Logbook 3.2
Displaying report 1-1 of 1.
YuhangZhao - 19:01, Wednesday 06 June 2018 (800)
recheck of laser parameter
Since we find the beam parameter changed because we change the laser power, we did the beam parameter measurement again. Now the power of laser is 277mW.
|
from laser head cm |
beam diameter1 um | beam diameter2 um |
|---|---|---|
| 34 | 1975 | 1848 |
| 29 | 1801 | 1683 |
| 24 | 1643 | 1527 |
| 19 | 1421 | 1371 |
| 14 | 1274 | 1194 |
result 1: 183um at -0.19m
result 2: 201um at -0.20m
mean: 192um at -0.195m
This is for AUX 1, the laser that will be used for the coherent control. A first characterization was done and reported in entry 666. It seems compatible with the new measurement.