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What is a linear medium?

23-11-2011 8:57pm

#1

Smythe

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What is a linear medium?

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#2 24-11-2011 1:35am

FarmerGreen

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Normal optical glass ie BK7.

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#3 24-11-2011 3:53am

Smythe

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FarmerGreen wrote: »

Normal optical glass ie BK7.

So, definition-wise, does it mean that different waves at any particular point in the medium can be superposed?

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#4 24-11-2011 4:55pm

rgunning

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One where the polarization is linear (i.e. proportional and parallel) with the electric field.

i.e.

P = k.e.E

where P is the polarization, E is the electric field, e is the permittivity of free space and k is the electric susceptibility of the medium.

I think.

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#5 25-11-2011 2:08am

FarmerGreen

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Bit technical, so non linear is like the frequency doublers they use to get from IR to visible ? Not graded index?

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