I tested 2 more optics found by Paco and Yehonathan in QIL.
| |
Polarization |
Incident Power [mW] |
Transmitted Power [mW] |
Transmission [ppm] |
| V6-704 V6-706 |
p-pol |
850 |
17.1 |
20118 |
| Yellow cylindrical box |
p-pol |
850 |
<1 ( could not even see it to measure it with a more sensitive power meter) |
<1000 |
I would like someone to redo the second test. I'm not sure what was happening but I could not find the transmitted beam at all on my card even with all lights out. This is either too good a coating and not useful for us or I did something wrong while measuring it.
V6-704, V6-706 mirror seemed like a good candidate as the paper with it said it would be a 200 ppm mirror. But I measured a lot more transmission than that. Now that I see that paper more carefully, it is a 45 degree s-pol mirror, probably that's why it had so much transmission for p-pol at near-normal incidence.
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