Specific features of waves in magnetic crystals |
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Authors: | A G Khatkevich L A Khatkevich |
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Institution: | (1) B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68, F. Skorina Ave., 220072 Minsk, Belarus;(2) Belarusian State University, Minsk, Belarus |
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Abstract: | On the basis of the asymmetric velocity tensor introduced we develop an orthogonal representation of wave propagation in anisotropic
magnetic dielectrics. Simple expressions are obtained for the direct dependence of polarization vectors, refractive indices,
and phase and group velocities of isonormal waves in a magnetic dielectric on the vectors of principal velocities. We show
that the presence of magnetic properties is manifested in the optical range in the fact that the velocities of wave propagation
in uniaxial crystals are determined by three main refractive indices, and therefore, both waves except for specific directions
become extraordinary, whereas in biaxial crystals (also because of a large number of parameters) the cones of internal and
external refraction become elliptic.
Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 66, No. 5, pp. 597–600, September–October, 1999 |
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Keywords: | magnetic dielectric crystal optics wave polarization phase and ray velocities conic refraction orthogonal transformation |
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