matthewrichard.todd@LIGO.ORG - posted 10:58, Tuesday 18 November 2025 (88155)
Summary Table of OMC Scan and Gouy Phase measurements
M. Todd, J. Wright, S. Dwyer
Here is my attempt to summarize as many of the OMC scan measurements of the input beam overlap with the OMC mode, as well as PRC and SRC gouy phases -- all at different thermal states.
| Measurement | Time | Test Masses | CO2 [W] | Ring Heater (per segment) [W] | SR3 [W] | OM2 [W] | FOM | aLOG |
| OMC Scan - Single Bounce off of ITMY | 1443895154 | Cold | 0 | 0 | 0 | 0 | Mismatch = 8.3% | 87461 |
| OMC Scan - Single Bounce off of ITMX | 1443894875 | Cold | 0 | 0.45 | 0 | 0 | Mismatch = 10.4% | 87461 |
| OMC Scan - Single Bounce off of ITMY | 1443889943 | Cold | 1.7 | 0 | 0 | 0 | Mismatch = 10.3% | 87461 |
| OMC Scan - Single Bounce off of ITMX | 1443894875 | Cold | 1.7 | 0.45 | 0 | 0 | Mismatch = 13.5% | 87461 |
| OMC Scan - Single Bounce off of ITMY | 1431450536 | Cold | 0 | 0 | 5 | 0 | Mismatch = 7.6% | 85661 |
| OMC Scan - Single Bounce off of ITMY | 1403543046 | Cold | 0 | 0 | 0 | 4.6 | Mismatch = 6.6% | 78701 |
| OMC Scan - Single Bounce off of ITMX | 1431449762 | Cold | 0 | 0.45 | 5 | 0 | Mismatch = 9.6% | 85661 |
| OMC Scan - Single Bounce off of ITMY | 1431474471 | Cold | 0 | 0 | 5 | 4.6 | Mismatch = 3.1% | 85698 |
| OMC Scan - Single Bounce off of ITMX | 1431474101 | Cold | 0 | 0.45 | 5 | 4.6 | Mismatch = 5.1% | 85698 |
| OMC Scan - Single Bounce off of ITMY | 1444515634 | Hot-ish | 1.7 | 0 | 0 | 0 | Mismatch = 7.1% | 87461 |
| OMC Scan - Single Bounce off of ITMX | 1444515312 | Hot-ish | 1.7 | 0.45 | 0 | 0 | Mismatch = 8.9% | 87461 |
| OMC Scan - SQZ Beam | 1446952255 | - | - | - | - | 4.6 | Mismatch = 6.8% | 88060 |
| OMC Scan - SQZ Beam | 1447088389 | - | - | - | - | 0 | Mismatch = 2.8% | 88088 |
| Gouy Phase - PRC | 1255227492 | Cold | ITMY = 0.9, ITMX = 0.8 | ITMY = 1.4, ITMX = 0.5 | 0 | 0 | OneWay Gouy Phase = 23.2 [deg] | 52504 |
| Gouy Phase - PRC | 1354415805 | Cold | 0 | 0 | 0 | 0 | OneWay Gouy Phase = 20.7 [deg] | 66215 |
| Gouy Phase - SRC | 1354410195 | Cold | 0 | 0 | 0 | 0 | OneWay Gouy Phase = 19.9 [deg] | 66211 |
| Gouy Phase - SRC | 1255907203 | Cold | ITMY = 0.9, ITMX = 0.8 | ITMY = 1.4, ITMX = 0.5 | 0 | 0 | OneWay Gouy Phase = 25.5 [deg] | 52658 |
| Gouy Phase - SRC | 1255829128 | Cold | ITMY = 0.9, ITMX = 0.8 | ITMY = 1.4, ITMX = 0.5 | 4 | 0 | OneWay Gouy Phase = 29 [deg] | 52641 |