On 14/01/11 03:07, J. Forster wrote:
Magnus,
That's a very interesting paper. It has some interesting stuff on the
vacuum techniuque that's needed for Rb or more for Cs.
Do you know if anybody has actually built / is selling a Rb with a diode
light source, rather than the bulb?
Not to my knowledge. However, they have been hacked for experimental
purposes:
http://tycho.usno.navy.mil/ptti/ptti2003/poster16.pdf
There is more on the topic, such as:
http://www.pttimeeting.org/archivemeetings/2009papers/poster6.pdf
http://tf.nist.gov/general/pdf/972.pdf
http://doc.rero.ch/lm.php?url=1000,43,4,20101230154956-BF/Affolderbach_Christoph_-_Experimental_Demonstration_of_a_Compact_and_High-Performance_20101230.pdf
http://ixnovi.people.wm.edu/documents/NathanBelcherREUPaper.pdf
A particular trick is to apply the RF onto the driving laser and do away
with the resonant cavity that way. The "chip scale" cesium clocks is
doing the same thing. Essentially it is a new type of physical package,
where the (cesium) beam, (H) active maser bounce box and (Rb) gas cells
has been the classical precursors. Another strain of development is
naturally the ion-traps.
There is research in the field, and I am only googling along and reading
some papers every now and then. But as things progresses, the size of a
rubidium physical package shrinks a lot when the it comes into
production. Maybe some of the tiny onces already taken the step by now.
The OCXO package can become the large part... :)
Cheers,
Magnus
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