Finally got the faster DM control code working, only 3 months late! It does make quite a difference, as you can see comparing the response to the original function:
Here's the norm of the wavefront error averaged over 100 different random commands applied with both versions. Its startling how slow the old script was; a pause of 0.5 seconds wouldn't be too conservative. Even with a new script though it looks like some pause is necessary since, although commands can be sent around 100 Hz, actuation doesn't happen until at least 0.1 sec.
You can also see this when looking for actuator decay. Here's the max displacement of each actuator. Note the ~0.1 sec rise time is the same regardless of the actuator unlike before:
Compare this with the similar plot from 10/22. Ultimately I might be able to get away with a pause less than 0.1 sec depending on the application, since it does put a limit on the speed of the overall system. I'm still amazed just how accurately the DM is able to reproduce the modes, here's mode 30 for instance, lookin snazzy:
Mmmm, deformable mirror pr0n...I bet no one's ever said that before.
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