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msr-consulting / exscalabar_server

Repository for the EXSCALABAR server.
http://www.msrconsults.com/ukmet-gh/exscalabar
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Move laser off resonance when speaker is on #174

Closed JustinLangridge closed 7 years ago

JustinLangridge commented 7 years ago

We are running in to problems during high ozone calibrations. Basically there is so much absorption signal from the ozone that we no longer get a good fit to the lorenzian speaker signal.

This could be remedied by setting the lasers to a laser a nominal frequency off resonance whenever the speaker is on. Would this be possible?

cathrynjfox commented 7 years ago

I've tested out turning up the speaker to see if it could 'drown out' the spikes caused by the ozone absorption - it didn't work. If there could be a button to turn the lasers on/off in the ozone cal setup, I could add that into the calibration sequence?

lo-co commented 7 years ago

Looking into this now. I thought that I was already kicking them off resonance, but maybe that is not implemented...

lo-co commented 7 years ago

OK...now when you make the switch from sample to speaker, the system will set the modulation frequency to 800. Is this good? I am going to assume that it is and close this ticket. Reopen if it is no good.

JustinLangridge commented 7 years ago

Thanks, that should do the job. We will test it and let you know

JustinLangridge commented 7 years ago

This works. Closing