Analysis of Torsion Induced Giant Gyrotropy in Hexagonal CdS and CdSe Crystals

Authors

  • Todor Dimov Shumen University, 115 Universitetska Str., BG-9700 Shumen, Bulgaria.
  • Ilia Iliev Shumen University, 115 Universitetska Str., BG-9700 Shumen, Bulgaria.
  • Antonina Hristova N.Y.Vaptsarov Naval Academy, 73 V. Drumev Str., BG-9026 Varna, Bulgaria.
  • Horst Lange

DOI:

https://doi.org/10.9734/bpi/aaer/v16/8223D

Keywords:

Induced gyrotropy, elliptical birefringence, torsional moment, isotropic point

Abstract

The symmetry C6v of hexagonal CdS and CdSe crystals exhibits "weak" gyrotropy. In crystals of CdS and CdSe deformed by a torsional moment guided along the optical axis, a significant gyrotropic effect is observed. The Polarizer-Crystal-Analyzer (P-C-A) device is used. Light does not pass through the device (P–C–A) with crossed P and A and an undeformed CdS or CdSe crystal. The crystal's symmetry is reduced to C6, and it gains gyrotropic properties as a result of the torsion. With a deformed CdS or CdSe crystal, the device (P-C-A) starts to miss light. The intensity of the light that passed through the structure (P–C-A) with deformed CdS or CdSe crystal is 85-90% of the incident light intensity for broad values of the torsional moments, according to our research.

Published

2021-06-28

How to Cite

Todor Dimov, Ilia Iliev, Antonina Hristova, & Horst Lange. (2021). Analysis of Torsion Induced Giant Gyrotropy in Hexagonal CdS and CdSe Crystals. Advanced Aspects of Engineering Research Vol. 16, 8–16. https://doi.org/10.9734/bpi/aaer/v16/8223D

Issue

Advanced Aspects of Engineering Research Vol. 16

Section

Chapters