[time-nuts] More HP5065 experiments

[Magnus Danielson]

On 09/30/2015 12:29 AM, Poul-Henning Kamp wrote:
> --------
> In message <560B0E63.1060903 at rubidium.dyndns.org>, 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