Journal of the Optical Society of America · 1966 · 50 citations · 7 references
Natural SciencesMaterials SciencePhysicsCondensed Matter PhysicsOptical MaterialsSpectroscopyCrystallographyElectronic Band StructureInfrared SpectroscopyOptical Properties Of MaterialsOptical Properties Of SolidsOptical SpectroscopyArgand DiagramCrystal Optical ConstantsCrystal OpticsInterband TransitionsOptical CharacterizationOptical ConstantsPrincipal DirectionsSingle-crystal Infrared Materials
The measured optical constants for the principal directions in these crystals are presented for the infrared out to about 20 μ. A comparison is made, using an Argand diagram, with simple free-electron theory and it is concluded that such an interpretation is not applicable to the results. Interband transitions may be stronger at these wavelengths than was previously believed.
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