Effect of supersaturation on structural stress of rapidly growing KDP crystals studied by wide-angle conoscopic interference

Abstract

Photoelastic effect was applied to analyze the relationship between fringe spacing in wide-angle conoscopic interference and structural stress of KDP crystals. Based on this analysis, the influence of supersaturation on the shear stress of rapidly growing KDP crystals was investigated experimentally. The results revealed a positive correlation between overall structural strain and growth supersaturation of KDP crystals. Additionally, the shear strain of each crystal concentrates at the boundaries of growth sectors.