[Ian, Torrey, Briana, Jeff]

We performed an experiment with the filter cavity. We split off the fast controller error signal going to the laser, and put it in the new Fosi speakers. Then used another speaker to play a song near the filter cavity. The speaker used to play the song was physically decoupled from the table and cavity. We then recorded the output signal using the moku data logger (original file found at "Nextcloud/GQuEST/B102/Bright.csv"). We then wrote a quick script that turns a CSV into a .wav file. Bright.wav is the result. 

Mr. Brightside can be clearly heard. Joking aside this is actually show casing the strong audio pick up of these very long bowtie cavities. The constant tone in the .wav file is a 840 Hz tone that is a result of poor grounding to the DC modulation input port used to control the frequency of the laser.

This is the way music like this was made to be heard.