Electrogyration and piezogyration in NaClO₃

Abstract

A method is developed for measuring electrogyration and piezogyration effects in polar crystals. The influence of linear electro-optic and piezo-optic effects is discussed in detail. By the use of different directions of measurement, the tensorial behaviour of the induced gyration is proved unequivocally. The magnitudes of the electrogyration and piezogyration coefficients are 10 -16 m V -i and 10 -15 m 2 N -I respectively. The relations between constants measured under different thermodynamic conditions are considered. An analysis of results on the basis of a coupled oscillator model reveals a strong sensitivity of induced gyration to changes in the arrangement of the oscillators.

Experimental and phenomenological aspects of circular birefringence and related properties in transparent crystals

“…low quartz by Miller (1973). At about the same time, piezogyration was studied with success in NaClO 3 by Meyers andVedam (1965, 1967) and later by Weber (1979).…”

Acoustogyration diffraction of optical waves: case of SiO2 and TeO2 crystals

“…One of the first works devoted to experimental observa− tion of the PG effect induced by directed pressures, against the background of intrinsic and piezo−induced optical biref− ringences, was published in 1979 by Weber [26]. In this work, the magnitude of the PG tensor component has been determined for NaClO 3 crystals (10 -14 -10 -15 m 2 N -1 [26]).…”

“…In this work, the magnitude of the PG tensor component has been determined for NaClO 3 crystals (10 -14 -10 -15 m 2 N -1 [26]). The PG effect has also been studied for low−symmetry am− monium Rochelle salt crystals against the background of linear birefringence [27].…”

Fifth-rank axial tensor describing the gradient piezogyration effect

“…Recently we have shown [1][2][3][4] that mechanical torsion can induce an optical rotation in crystals possessing no natural optical activity or a common piezogyration effect [5][6][7][8]. This phenomenon described as a gradient piezogyration effect is caused by a spatial gradient of mechanical stresses rather than the stresses themselves.…”