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R&D (FilterCavity)
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YuhangZhao - 23:41, Thursday 25 April 2019 (1326)Get code to link to this report
Improvement of BAB matching to AMC up to 99.5%

By moving the lens position, I could improve the matching from OPO transmission(BAB) into AMC to a decently high level. This will improve our losses situation by roughly 4.5%. Before, the matching of this beam was roughly 95%. Now it is (1.3680-0.0068)/1.3680 = 99.50%

In the attached figure 2, there is some residual s-pol(actually it is p-pol, but we put a half-wave plate. So this residual beam becomes p-pol when it arrives AMC). But it comes from the defect of PBS.

Images attached to this report
1326_20190425163900_babtoamc.png 1326_20190425163905_babtoamc2.png
Comments related to this report
NaokiAritomi - 07:57, Friday 26 April 2019 (1328)

Good work! By the way, loss is visibility**2 so loss will improve by ~9%.