[time-nuts] homebrew maser

[J. Forster]

Either of those are a lot harder than a H MASER.

-John

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


> How about a "Laser-Cooled Mercury Ion Frequency Standard"?
> http://tf.nist.gov/general/pdf/1225.pdf
>
> Here's another approach:
>
> "A diode-laser optical frequency standard based on laser-cooled Ca
> atoms:Sub-kilohertz spectroscopy by optical shelving detection"
> http://www.nist.gov/customcf/get_pdf.cfm?pub_id=105042
>
>
> ----- Original Message -----
> From: "John Miles" <jmiles at pop.net>
> To: <jfor at quik.com>; "Discussion of precise time and frequency
> measurement"
> <time-nuts at febo.com>
> Sent: Tuesday, August 31, 2010 8:02 PM
> Subject: Re: [time-nuts] homebrew maser
>
>
>>
>>>
>>> Microwave test gear and plumbing is very significantly harder to get at
>>> 24
>>> GHz than at 1.4 GHz.
>>>
>>> At a guess I've seen easily 100 times more stuff available at 1.4 GHz.
>>
>> That is so far down the list of "101 Things That Are Hard About Building
>> a
>> Hydrogen Maser" I'm not even sure it makes the top 101. :)
>>
>> There is a ton of prior art in the Amateur Radio microwave community on
>> 24
>> GHz microwave activity and construction.  At 1.420 GHz, not so much.
>>
>> -- john, KE5FX
>>
>>
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