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Laser frequency comb, Successful test
Del Palmer
post Sep 7 2008, 01:44 AM
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The laser frequency comb was recently successfully tested at the VTT:

http://www.eso.org/public/outreach/press-r...8/pr-26-08.html

This is needed to build the next generation of spectrographs to enable detection of Earth-like planets, dark energy etc. The required accuracy really is quite astonishing:

QUOTE
In fact, they must be accurate to about one part in 30 billions - a feat equivalent to measuring the circumference of the Earth to about a millimetre!


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- Del Palmer   Laser frequency comb   Sep 7 2008, 01:44 AM


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