I performed the same procedure described here, and re-measured the transfer function of the mode cleaner to see the effect of the drag-wiping. The results are attached in a pdf. We don't seem to have done any damage, but the improvements are barely measurable.
|
What | Then | Now
| |
pole frequency | 3.789kHz | 3.765kHz
| |
loss per optic | 99ppm | 91ppm
| |
finesse | 1460 | 1470
| |
trans | 86.7% | 87.7%
|
|