On 09/30/2015 12:29 AM, Poul-Henning Kamp wrote:
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In message <[email protected]>, Magnus Danielson writes:
For instance, the lamp oscillator is
open-loop, so supply voltage and temperature effects will factor in
undamped. Servo up the intensity seems to be the remedy there.
It might also be an interesting experiment to injection-lock the
lamp-exciter oscillator, just to see if there is any RF leakage or
light intensity effects related to that...
I was about to suggest it actually, would be interesting to see to what
degree the intensity varies with frequency cs. varies with amplitude.
If you sniff it, you can measure it.
What about the C-field, can we servo up that by looking at the side-band
Rabi/Ramsey pedistals? Yes, it should be there, but I haven't had the
time to measure it. Doing that would require hacking into the
synthesizer side and jump around on the 5,3 MHz signal much as you would
do to the 12 MHz signal for Cesiums.
Doing a DSS based synth is a pretty obvious experiment, and along
with an ADC on the optical signal and a processor, a lot of servo-loop
algorithms become viable.
Indeed. Nothing particularly exotic would be needed these days.
It would also allow for a bunch of interesting experiments.
Cheers,
Magnus
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