[time-nuts] Re: Sparkfun lists SA.35m

[Dana Whitlow]

I knew about the use of the VCSEL, but I'd bet a good dinner that it's not a
Rubidium laser!  Last I heard, none of the elements in that corner of the
periodic table were semiconductors, and it's hard to imagine a vapor-based
VCSEL.

Dana


On Sat, Apr 3, 2021 at 7:31 AM Lux, Jim <jim at luxfamily.com> wrote:

> On 4/3/21 4:22 AM, Dana Whitlow wrote:
> > "rubidium laser" ???
> >
> > Dana
>
> I don't know about the MAC, but the CSAC uses a VCSEL to shine through
> the gas cell.
>
> The MAC is a pretty big thing compared to the CSAC - it's in the usual
> 2x2" package and draws 5-8W (after warmup)
>
> >
> > On Sat, Apr 3, 2021 at 2:15 AM Poul-Henning Kamp <phk at phk.freebsd.dk>
> wrote:
> >
> >> I know it's not a particular outstanding atomic clock, but I was still
> >> surprised to see that Sparkfun lists the SA.35m for $1995...
> >>
> >>          https://www.sparkfun.com/products/14830
> >>
> >> Not in stock though...
> >>
> >> --
> >> Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
> >> phk at FreeBSD.ORG         | TCP/IP since RFC 956
> >> FreeBSD committer       | BSD since 4.3-tahoe
> >> Never attribute to malice what can adequately be explained by
> incompetence.
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