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Just wondering how you get the complex refractive index of a material from relectivity measurements at a single angle. I understand you must infer some of the data, using the Kramers Kronig relations, is this right?

Is there a direct way of calculating it? I see from an article on elipsometry that is you have the ratio of the reflction of plane and paralell polarised light

from wiki

Ps/Pp = tan(Phi)exp(ixdelta)

where delta is the phase shift, and the amplitued is tan(Phi), but here you still have one unkown. Any ideas on doing this without the kramers kronig relation?

cheers

Gobil

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# Complex refractive index mesurement from reflectivity data

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