BIGFOOT (LC)
Shalika,Marc - 20:36, Wednesday 17 April 2024 (3534)
Mesurement of coating at different positions

It seems there could be some issue with previous data, as there is some issue with reconstructing rotation of the coating. I took measurement at several position of coating today. The coating BB1EO3 is mounted on a rotator and hence the rotator is rotated at 0 deg, 14deg and 62deg. The voltage scanned was from 0 to 3.5V with 0.1V resolution and averaging of 10th order is implemented.

Also the rotator mount was changed. previoulsy we were using rotator alone and hence it was quite difficult to have finely tuned alignment between the incident and reflected beam. The rotator is now mounted like this and now we could perfectly align the reflected beam with incident beam after the BS

path = "C:/Users/atama/OneDrive/LC-Experiment/Measurement Data/"

0 deg

Input_foldername=os.path.join(path, 'Polarization states/20240401')
input_filename= 'Mon, Apr 1, 2024 9-59-08 AM.txt'
Output_foldername = os.path.join(path, 'Coating measurement/BB1-E03/20240417/0 deg')
output_filename ='Wed, Apr 17, 2024 7-01-23 PM.txt'
 
Input_foldername=os.path.join(path, 'Polarization states/20240401')
input_filename= 'Mon, Apr 1, 2024 9-59-08 AM.txt'
Output_foldername = os.path.join(path, 'Coating measurement/BB1-E03/20240417/0 deg')
output_filename ='Wed, Apr 17, 2024 7-01-23 PM.txt'
Output_foldername = os.path.join(path,'Coating measurement/BB1-E03/20240417/14 deg')
output_filename= 'Wed, Apr 17, 2024 7-15-18 PM.txt'
Output_foldername = os.path.join(path, 'Coating measurement/BB1-E03/20240417/62 deg')# Mirror at 28deg
output_filename= 'Wed, Apr 17, 2024 7-29-20 PM.txt'

14 deg

Output_foldername = os.path.join(path,'Coating measurement/BB1-E03/20240417/14 deg')
output_filename= 'Wed, Apr 17, 2024 7-15-18 PM.txt'
 
62 deg
Output_foldername = os.path.join(path, 'Coating measurement/BB1-E03/20240417/62 deg')
output_filename= 'Wed, Apr 17, 2024 7-29-20 PM.txt'