Abstract

Abstract Birefringence images of screw dislocations in gadolinium gallium garnet (GGG) and yttrium aluminium garnet (YAG) crystals have been studied in detail and birefringence images of screw dislocations viewed end-on have been observed for the first time. The one-to-one correspondence between birefringence images of screw dislocations viewed end-on and those viewed from the side is demonstrated. The contours of equal intensity for birefringence images of screw dislocation viewed end-on in GGG and YAG crystals are calculated and presented.

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