On Wed, 01 May 2013 13:48:06 -0400 Michael Tharp <[email protected]> wrote:
> On 5/1/2013 11:40, Sarah White wrote: > > I tweeted the author of this article, trying to point out that (as I > > understand) "radioactive decay" is not relevant in any way for cesium > > frequency standard/reference thingies: > > > > https://twitter.com/kuzetsa/status/329618223916011520 > > > > If someone more authoritative and/or experienced (or at least more > > awake) wanted, please let me know if I was confused and such Yes, the article is wrong in nearly everything about the description how the CSAC works. No microwaves are involved, the laser is not for heating but for probing etc pp.. > Symmetricom doesn't go out of their way to say how the damn thing > actually works, Actually, there is quite a bit about how that damn thing works. Beside from the literature about coherent population trapping you can find from symmetricom directly the following papers: (in chronological order) [1] "The chip-scale atomic clock - Coherent population trapping vs. conventional interrogation", by Lutwack, Emmons, Riley, Garvey, 2002 http://dodreports.com/pdf/ada484363.pdf [2] "The MAC A Miniature Atomic Clock" by Lutwak, Vlitas, Varghese, Mescher, Serkland and Peake, 2005 [3] "The Miniature Atomic Clock Pre-Production Results", by Lutwak Rashed, Varghese, Tepolt, Leblanc, Mescher, Serkland and Peake, 2007 [4] "The Chip-Scale Atomic Clock - Recent Developments", by Lutwak, 2009 [5] "The SA.45S Chip-Scale Atomic Clock", by Lutwak, 2011 http://scpnt.stanford.edu/pnt/PNT11/2011_presentation_files/18_Lutwak-PNT2011.pdf I'm quite sure, there is more than just these papers. But these are the ones i've found and read. Especially [5] is quite nice as it contains a lot of performance data. If you are interested, i can also dig out some papers on coherent population trapping that explain the basic idea and how it works in understandable terms. Attila Kinali -- The people on 4chan are like brilliant psychologists who also happen to be insane and gross. -- unknown _______________________________________________ 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.
