[time-nuts] LED instead of discharge lamp for Rb vapor cell standards

Poul-Henning Kamp phk at phk.freebsd.dk
Wed Feb 21 13:10:17 EST 2018

In message <20180221184928.1c9b4c3a4d2e762970b5b181 at kinali.ch>, Attila Kinali w

>So the Rb85 "notch" filter might not get rid of all the unwanted light
>and some of this might depopulate the excited state of the Rb87
>that are in the RF cavity.

I have a hard time seeing how you can not get worse S/N that way.

If you want to do it with a LED, I think it needs to be a stabilized

Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.

More information about the time-nuts mailing list