[time-nuts] Home built cesium clocks???
Bruce Griffiths
bruce.griffiths at xtra.co.nz
Sun Jun 29 11:44:37 UTC 2008
Predrag Dukic wrote:
> Bruce,
>
> I did my homework and collected everything from the internet I could
> get. I have this one too.
>
> If I go optical way, I still need 9+GHz electrical source, so I will
> first recreate electronics. Using off the shelf DDS chips, or using FPGA.
>
> Also I need 9 GHz AOM, so that I can split the same optical beam and
> have two wavelengths 9ghz apart. That is a problem because I have
> only 350 MHz AOM.
>
> Multiple pass is difficult, it would take cca 27 passes to get 9
> GHz. On the other side, I wouldn't need the last stages of SRD
> multiplication to get 9 GHz microwave.
>
> No doubt, I will have a lot of fun with the project.
>
>
> Predrag
>
>
Pedrag
The easiest way given your AOMs may be to use a combined optical and electrical method without dual frequency pumping - slightly less efficient but no need for a 9GHz AOM.
Bruce
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