[time-nuts] Cs tube pics
attila at kinali.ch
Wed Nov 2 17:13:06 EDT 2016
On Thu, 3 Nov 2016 07:42:13 +1100
Michael Wouters <michaeljwouters at gmail.com> wrote:
> One other vital component is the flywheel oscillator you need to take
> advantage of the fabulous stability you now have at hand.We had a cryogenic
> sapphire oscillator for our (microwave) clock.
Yes, a lot of the optical clocks are using a hydrogen maser as local
oscillator. Ie you need an atomic clock to build an atomic clock.
> For an optical clock, you're also going to need a frequency comb to get
> back into the RF domain.
If i were able to build a working optical clock, i would just buy
a frequency comb. The 10k€ for a comb would be cheap compared to the
money spend on the rest of the clock :-)
Any simple idea will be worded in the most complicated way.
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