[Briana, Ian]

Adjusted the fiber collimator by turning (first had to unlock it with a small screwdriver) to produce as collimated as possible of a beam. This is the current profile after adjustment: current780laserprofile- it is reasonably "collimated" for the scale of our distances, and we can put lenses to reshape it how we need. When using the beam profiler for this, the output power of the laser was 2.03 mW (current at 7.781 mA, temperature at 10.128 kOhms). 

Aligned for the new setup for measuring (tempsetup.svg) which gives room for beam profiling and placing lenses. Also, it will be easy to put in the EOM into this setup for the locking scheme without the pump beam. Cleared off some optics- unused optics are placed towards the middle of the table (IMG_2348.jpg, IMG_2347.jpg). 

Measured immediately after laser and immediately after to verify that turning the waveplate changes the power reading. The values were respectively (for different laser powers), 7.30 mW -> 6.8 mW, 9.7 mW -> 8.93 mW, and 12.5 mW -> 10.9 mW, corresponding to ~93%,  92%, and 87% transmittance. Should verify this transmittance by also measuring the power after the waveplate and the reflectance to ensure losses are reasonable and within the beamsplitter specs. 

Note: for the damage threshold of the blue Nanoscan beam profiler, refer to this image from the specs: beamprofiledamagethreshold.png.