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Growth Twinning in Self-Frequency-Doubling Laser Crystal NdxGd1 xAl3 (BO3) 4 Observed with White-Beam Synchrotron Radiation Topography

胡小波X. B. Hu (a) J. Y. Wang (a) L. L. Tian (a) Q. C. Guan (a) Y. G. Liu (a) J. Q. Wei (a) M. H. Jiang (a) W. J. Liu (b) S. S. Jiang (b) and J. H. Jiang (c)

phys. stat. sol. (a) 170, 29 (1998),-0001,():

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摘要/描述

The growth twinning in self-frequency-doubling laser crystal NdxGd1 xAl3 (BO3) 4 (NGAB) has been observed with white-beam synchrotron radiation topography (WBSRT). It is shown that the growth twinning in flux-grown NGAB crystal is the 180 rotation twin in which the twofold symmetric operation axis is parallel to the [0001] direction and this kind of twinning often shows the black-and-white contrast in X-ray topography. It is believed that the growth twinning in NGAB was induced by growth bands formed during crystal growth.

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