Optical rotatory power of trigonal quartz and germanium dioxide single crystals

Tatiana M. Glushkova; Dmitrii F. Kiselev; Marina M. Firsova; A. P. Styrkova

doi:10.1117/12.271812

1 April 1997 Optical rotatory power of trigonal quartz and germanium dioxide single crystals

Tatiana M. Glushkova, Dmitrii F. Kiselev, Marina M. Firsova, A. P. Styrkova

Proceedings Volume 3094, Polarimetry and Ellipsometry; (1997) https://doi.org/10.1117/12.271812
Event: Polarimetry and Ellipsometry, 1996, Kazimierz Dolny, Poland

Abstract

The optical activity of single crystals of trigonal quartz and its structural analog germanium dioxide, is studied with the help of photoelectric polarimeter. The rotatory power was recorded in the wavelength range 633-365 nm accurate to +/- 0.02 deg/mm. Our experiments showed that the value of rotary power (curly phi) for germanium dioxide was 1.5 times greater than that of quartz, and therefore, the former is more promising in optical applications. The dispersion dependencies of the rotatory power for crystals under study analyzed within the framework of the Chandrasekhar's model allowed us to estimate the wavelengths of the fundamental absorption bands that amount to approximately 0.1 micrometers for both objects. The effect of reactor irradiation on the rotatory power of quartz was also examined. These investigations showed that (curly phi) decreases with an increase in the dose, vanishing at 10²⁰ n/cm². This fact is due to the local irradiation damage of quartz lattice and its gradual amorphization. It should be noted that the value of the characteristic wavelength for the irradiated quartz does not change within the whole dose range studied. This fact provides an evidence that the silicon-oxygen tetrahedron remains as a structural unit of quartz even in its matemict phase.

Citation Download Citation

Tatiana M. Glushkova, Dmitrii F. Kiselev, Marina M. Firsova, and A. P. Styrkova "Optical rotatory power of trigonal quartz and germanium dioxide single crystals", Proc. SPIE 3094, Polarimetry and Ellipsometry, (1 April 1997); https://doi.org/10.1117/12.271812

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