Poul-Henning,
On 11/02/2016 11:02 AM, Poul-Henning Kamp wrote:
--------
In message <[email protected]>, Attila Kinali
writes:
I still would like to try to build my own atomic clock at some point,
even if it would be a quite costly, and a many years project.
If you like lasers, build an ion trap.
If you only like lasers a little bit, build an optically pumped standard.
If you *really* like lasers, build a fountain.
If you are more chemically inclined, there are a ton of gasses you
can work with, methane, amonia, CO2 etc.
The one thing nobody has done or even tried yet, (as far as I know),
is optically excite a solid crystal.
Actually, that's how lasers got started, by getting ruby crystals to
laze, which really use the chromium dopant of sapphire:
https://en.wikipedia.org/wiki/Ruby_laser
Surely you know that.
Being able to utilize it for clock purposes is another thing.
NaCl crystal stable HeNe laser is used for meter standards, which is
kind of associated.
I have not seen anyone optical excite atoms for microwave frequencies. I
wonder if the chemical bonds can be prohibitive enough for meaningful use.
Cheers,
Magnus
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