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.
