Bulg. J. Phys. vol.28 no.1-2 (2001), pp. 50-62



Measurement of the Scalar Parameter of Gyration and the Ellipticity of Normal Waves in the Ani so tropic Crystals. Maxima in Transmittance of P-Twisted CdS-A System

T. Dimov
Department of Physics, Konstantin Preslavsky University of Shumen, 9712 Shumen, Bulgaria
Abstract. A method for measurement of the scalar parameter of gyration and ellipticity k of normal waves in uniaxial gyrotropic crystals is proposed. The studied crystals are of two different types: (1) cubic gyrotropic crystals with induced birefringence, and (2) uniaxial crystals with induced gyrotropy. It has been shown that this method can be applied for the research of both crystals. By this method, the ellipticity k of normal waves in twisted CdS for different values of the angle of twist is measured. Explicit relations are found between: (a) the ellipticity k in twisted CdS and the angle of twist; (b) the spectral position of maxima in transmittance of P-twisted CdS-A system and the crystal thickness; (c) the interference peaks values and the angle of twist.

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