[time-nuts] optically pumped frequency standards

[J. Forster]

My skimming of the articles indicates the efforts with lasers are not
simply as a source of optical pumping light, but the FMing seems to be
aimed at a kind of limited trapping of the Rb atoms to improve
performance.

My original question was simply can the discharge lamp be replaced with a
SS (LASER ?) light source to get rid of lamp life issues. I don't know
what the BW of the excitation source has to be, but I'd expect that any
light outside a narrow bandwith is wasted, or maybe even degrades S/N.

-John

==============


> Hi Paul,
>
> From: "paul swed" <paulswedb at gmail.com>
>
>> Well I would be curious what on earth a VCEL laser diode costs. Suspect
>> more
>> then $6 at Digikey.
> Not really!
> $5.71!
> http://www.optekinc.com/datasheets/OPV382.pdf
>
> Bye,
> Jean-Louis
>
>
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