【摘要】 本文计算了铌酸锶钡(SBN)晶体中沿光轴的位错双折射像的反衬,计算中考虑了光弹系数的各向异性,结果表明与各向同性计算相比刃位错双折射像中的花瓣有伸长的趋势,螺位错无反衬,并与实验结果作了比较。更多还原

【Abstract】 In this paper, considering the photo-elastic anisotropy, we calculated the contrast of birefringence topography of dislocation in SBN crystals along the optical axis.It is shown that the petals of edge dislocation image for anisotropio crystals are longer than that for isotropic crystals. The images for screw dislocation have no contrast. These results have been compared with experiments.更多还原