Evaluation of the systematic errors of polarimetric measurements: application to measurements of the gyration tensors of α-quartz by the HAUP
Journal of Applied Crystallography
Volume 21, Issue 5, pages 479–484, October 1988
How to Cite
Kobayashi, J., Asahi, T., Takahashi, S. and Glazer, A. M. (1988), Evaluation of the systematic errors of polarimetric measurements: application to measurements of the gyration tensors of α-quartz by the HAUP. Jnl Applied Crystallography, 21: 479–484. doi: 10.1107/S0021889888005503
- Cited By
It was shown in the course of developing the high-accuracy universal polarimeter (HAUP) that any polarimetric optical analyses cannot be free from a systematic error γ originating in the parasitic ellipticities of the constituent Nicol prisms. A method by which one can remove γ in the HAUP method is presented. This has been successfully applied to measurements of the gyration tensors and birefringence of two enantiomorphic crystals of α-quartz. It was found that the order of magnitude of this error for a polarizer is about 10−4 and consequently γ lies between 10−4 and 10−3 in typical optical systems. Our results, g11 = 5.7 ± 0.52 × 10−5 and g33 = −13.6 ± 0.52 × 10−5 with a wavelength of 6328 Å for laevorotatory quartz at 300 K are in good agreement with some of the previous reports.