We put the S405C power meter after Polarizer1 and Matt adjusted the polarizer to maximize the power through. We then put the power meter after PowerMeterPickOff and adjusted Polarizer2 to maximize the power at the Waveplate setting for max power. Max power measured was 1.45W. Minimum power using waveplate ~30mW.

 

Matt zero'ed this diode and we used the  S405C power meter to calibrate is to the power being injected after PowerMeterPickoff.

 

We changed this to -2000ohm so the fast PDs report positive power. 

Checked beam was centered on both PDS by using PDPickoff and PDBeamsplitter. There isn't much flat plateau on these, meaning the beam is still larger than ideal on these diodes. Matt then adjusted Waveplate2 to get PDA and PDB powers equal. Using the S405C power meter, we measured 4.3mW before PD Lens. Adjusted Responsivity from 1.42 to 1.53 and splitter to 50% to show this. 

 

Double checked the beam was dumped after Polarizer 2 and the flipper. 

 

Matt filled in the calibration screen for power control. We still plan to edit and run Ryan Short's calibration script. 

 

Checked the beam was centered on the iris between M4 and M5.