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Discussion of precise time and frequency measurement

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270 fs clock accuracy achieved at UCLA

RR
Russ Ramirez
Wed, Aug 24, 2016 6:26 PM

This is a nice advance - where do I get one? LOL

http://advances.sciencemag.org/content/2/4/e1501489

Russ
K0WFS

This is a nice advance - where do I get one? LOL http://advances.sciencemag.org/content/2/4/e1501489 Russ K0WFS
BB
Bill Byrom
Tue, Aug 30, 2016 2:41 AM

Quote:
The frequency relative uncertainty of the fully stabilized chip-scale
optical frequency comb is thus calculated at 2.7 × 10−16, referenced to
the 188-THz optical carrier.

I don't understand where your "270 fs" value in the post subject comes
from. The stated uncertainty is 2.7 × 10−16, which would be a time
relative uncertainty of 270 as (attosecond) over a one second interval.

Bill Byrom N5BB

On Wed, Aug 24, 2016, at 01:26 PM, Russ Ramirez wrote:

This is a nice advance - where do I get one? LOL

http://advances.sciencemag.org/content/2/4/e1501489

Russ
K0WFS


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Quote: The frequency relative uncertainty of the fully stabilized chip-scale optical frequency comb is thus calculated at 2.7 × 10−16, referenced to the 188-THz optical carrier. I don't understand where your "270 fs" value in the post subject comes from. The stated uncertainty is 2.7 × 10−16, which would be a time relative uncertainty of 270 as (attosecond) over a one second interval. -- Bill Byrom N5BB On Wed, Aug 24, 2016, at 01:26 PM, Russ Ramirez wrote: > This is a nice advance - where do I get one? LOL > > http://advances.sciencemag.org/content/2/4/e1501489 > > Russ > K0WFS > _________________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.