- #1
Niles
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Hi
From Wiki (http://en.wikipedia.org/wiki/Nonlinear_optics): "Nonlinear optics (NLO) is the branch of optics that describes the behaviour of light in nonlinear media, that is, media in which the dielectric polarization P responds nonlinearly to the electric field E of the light."
My question is: In principle, all media are nonlinear in the sense that we can Taylor expand the potential of the electrons, but whether a material behaves linearly or not depends only on the incoming field. Don't you agree?
From Wiki (http://en.wikipedia.org/wiki/Nonlinear_optics): "Nonlinear optics (NLO) is the branch of optics that describes the behaviour of light in nonlinear media, that is, media in which the dielectric polarization P responds nonlinearly to the electric field E of the light."
My question is: In principle, all media are nonlinear in the sense that we can Taylor expand the potential of the electrons, but whether a material behaves linearly or not depends only on the incoming field. Don't you agree?
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