NANOSTRUCTURED POLARISED GLASS AND METHOD OF ITS PRODUCTION Russian patent published in 2011 - IPC C03C3/97 B82B3/00 

FIELD: physics.

SUBSTANCE: proposed glass features the following ratio of components in mol. %: 22-25 - Na₂O, 25-30 - Nb₂O₅, the rest making SiO₂. Proposed method comprises two-step thermal treatment and polarisation in constant current at increased temperature. Thermal treatment is conducted at 640-645°C for 11-12 h and, then, at 670-675°C for 15-20 min. Now, thermally treated specimen, a 0.9-1.1 mm-thick flat-parallel plate, is subjected to polarisation at 320-330°C in constant electric field directed perpendicular to said plate, at voltage of 0.8-1.5 kV for 10-15 min, and cooled down in the presence of said electric field.

EFFECT: higher quadratic optical susceptibility to allow glass to be used as active material in linear optoelectronic transducers.

2 cl, 5 ex