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Multiple Wavelength Wave Plates

by *FaerieLight*
Tags: multiple, plates, wave, wavelength
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*FaerieLight*
#1
Apr17-11, 05:38 AM
P: 43
Does anyone know why quarter wave plates and half wave plates have to be multiple order plates (pretty thick plates) in order to retard visible light of several different wavelengths? Why is it undesirable for this to be done with thinner plates (like zero order)?
Thanks
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