[time-nuts] Pressure sensitivity of Rb vapor cell standards

[Attila Kinali]

On Mon, 17 Feb 2020 18:16:04 -0600
magnus <magnus at rubidium.se> wrote:

> Hi,In the 5065 and most others, the light intensity is not stabilized.
> It should not be too hard to regulate the Rb lamp amplitude and servo
> it to light intensity from the detector. Didn't Poul-Henning check this?


I still think, replacing the 5065 lamp with a 780nm LED would be worthwhile
to try. Yes, the LEDs have a broader spectrum than a lamp, but it is a lot
easier to keep it stable than a fluerescent lamp. It would also allow to
lower the temperature of the Rb cell to get to the zero tempco point (which
seems to be around 60°C for most mixtures).


				Attila Kinali

-- 
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