If and only if you want to reduce the SNR substantially.
A typical glass fibre will capture insufficient light to be useful
compared to the standard arrangement using a photocell.
Plastic fibres are not usable as the temperature in the vicinity of the
absorption cell is too high.
Bruce
Tom Knox wrote:
I was thinking you could view it through fiber
Thomas Knox
Date: Wed, 22 Feb 2012 19:19:57 +0100
From: [email protected]
To: [email protected]
Subject: [time-nuts] CCD lock detection (was: DIY Physics Article)
On Wed, 22 Feb 2012 09:14:34 -0700
Tom Knox<[email protected]> wrote:
Rather then a simple lock LED I think what would be interesting if possible
to place a CCD next to a Rubidium or Cesium cell to view the luminance at
the hyperfine transiton. I am sure someone has done this but I have not
seen it.
I dont think this is easily possible. You have the CCD operating in a strong
electromagnetic field which will disturb it quite a bit. Though i think
one could try to use one of the modern CCD like the OVM7690 (a tiny little
thing of just 2.5x2.5x2.9mm^3 and quite cheap too!) and mount it in some
empty corner that has little to no field.
The other problem would be to see the luminance trough the strong
background. IIRC the "modulation" strength of the absortion is 1-2%
of the singal. So the luminance would be quite weak behind some strong
background light as well.
But it would be nevertheless a cool project :-)
Attila Kinali
--
Why does it take years to find the answers to
the questions one should have asked long ago?
_______________________________________________
time-nuts mailing list -- [email protected]
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
_______________________________________________
time-nuts mailing list -- [email protected]
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
_______________________________________________
time-nuts mailing list -- [email protected]
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
