BB1EO3 was installed after the BS. The reflected beam divergence is np.arctan(1/200)=0.29 deg. The LC are scanning roughly from 0-5V with 1V resolution. This is intended to directly estimate the birefringence of the mirror. 

measurement:

C:\Users\atama\OneDrive\LC-Experiment\Measurement Data\Coating measurement\BB1-E03\20240311

Mon, Mar 11, 2024 5-25-22 PM