Fundamental lemma (Langlands program)

From formulasearchengine
Revision as of 14:31, 18 January 2014 by en>GoingBatty (added italics)
Jump to navigation Jump to search

The group delay dispersion (GDD) of an optical element is the derivative of the group delay with respect to angular frequency, and also the second derivative of the optical phase. D2(ω)=Tgdω=d2ϕdω2. It is a measure of the chromatic dispersion of the element. A parameter independent of the length of the material is the group velocity dispersion (GVD).

Equivalent Parameters

GDD is related to the total dispersion parameter D as

D2(ω)=2πcλ2Dtot

References

Encyclopedia of Laser Physics and Technology article on Group Delay Dispersion


Template:Optics-stub