[Rich Koji]
The impedances of the new LLO EOM were measured with the beat note setup at the 40m PSL (as described in the previous ELOG entry.
At the target frequencies (9.1MHz, 24.1MHz, 45.5MHz, 118.3MHz), the modulation responses were (0.09, 2.9e-3, 0.053, 0.021) rad/V.
This corresponds to the requirement for the driving power as follows.
Frequency
[MHz] |
Response
[rad/V] |
modulation depth
required (LHO) [rad] |
Required
drive [Vpk] |
Required
drive [dBm] |
| 9.1 |
0.09 |
0.22 |
2.4 |
17.8 |
| 24.1 |
2.9e-3 |
0.014 |
4.8 |
23.7 |
| 45.5 |
0.053 |
0.28 |
5.3 |
24.5 |
| 118.3 |
0.021 |
0.010 |
0.48 |
3.6 |
|