KAGRA MIR (Polarization)
MarcEisenmann - 21:12, Monday 13 December 2021 (2755)
spare ETMY birefringence

Abe, Katsuki, Marc

This entry reports the birefringence measurements of spare ETMY without roll rotation (ie with the 2 ears flats).

delta_n and theta seems quite consistent over all measurements.

Images attached to this report
2755_20211213130130_pol0deg.png 2755_20211213130137_pol15deg.png 2755_20211213130146_pol29deg.png 2755_20211213130159_pol46deg.png 2755_20211213130209_plot60deg.png 2755_20211213131118_pol75deg.png 2755_20211213131125_s0.png 2755_20211213131133_s1.png 2755_20211213131142_dntheta.png 2755_20211213131149_dn.png 2755_20211213131156_theta.png