NAOJ GW Elog Logbook 3.2
Displaying report 1-1 of 1.
YuhangZhao - 16:33, Wednesday 02 October 2019 (1679)
Several point to check GR/IR power (AOM setting)
Yuhang and Aritomi
Power reference form
| GR power before green EOM | 200mW |
| GR power before AOM | 36mW |
| GR power before MZ | 152mW |
| GR power after AOM | 12.6mW |
| IR power before ND filter | 20mW |
| IR power after ND filter (before IRMC) | 4mW |
| IRMC transmission | 1.7mW |
We set the power after AOM by changing the AOM modulation depth. The maximum RF signal we should give to AOM is 30dBm(1W). The signal is generated from a signal generator then pass through a RF amplifier(amplify 32dB). So the maximum RF signal power we should generate should be -2dBm. Then we measured the GR power after AOM while changing AOM modulation depth(see attached form).
| AOM modulation depth | Green power (injected to FC) |
| 30dBm | 28.2mW |
| 29dBm | 28.5mW |
| 28dBm | 27.8mW |
| 27dBm | 26mW |
| 26dBm | 23.5mW |
| 25dBm | 20.7mW |
| 24dBm | 17.8mW |
| 23dBm | 15.11mW |
| 22dBm | 12.65mW |