New method to determine the optical rotatory dispersion of inorganic crystals applied to some samples of Carpathian Quartz.
A new method to determine the optical rotatory dispersion (ORD) in the visible range, based on a channeled spectrum obtained with a uniax inorganic crystal introduced between two crossed polarizers with its optical axis parallel to the light propagation direction is detailed in this paper. When the studied inorganic crystals are transparent, this method permits the estimation of the optical rotatory dispersion in the visible range, for which the cheap polarizers are available. The speed of the measurements is very high, because the estimations are made from the channeled spectrum obtained for a single arrangement of the optical components. By using a computer, ORD is quickly determined for the visible range. The results obtained by this method for some Carpathian Quartz samples are consistent with those from literature. The proposed method can be also applied in UV and IR spectral ranges, when the anisotropic layers are transparent and the linearly polarized radiations can be obtained.
Faculty of Physics, "Alexandru Ioan Cuza" University, 11 Carol I Blvd., RO-700506 Iasi, Romania. Electronic address: dimitriu@uaic.ro.
Dan Gheorghe
DG
Dimitriu
Faculty of Physics, "Alexandru Ioan Cuza" University, 11 Carol I Blvd., RO-700506 Iasi, Romania.
Dana Ortansa
DO
Dorohoi
D016880:Anisotropy; D008027:Light; D009905:Optical Rotatory Dispersion / Q000379:methods*; D011791:Quartz / Q000737:chemistry*
D011791:Quartz
Carpathian Quartz; Optical rotatory dispersion; Specific rotation