Defect Study of Tm:YAG Crystal

Abstract

Abstract: Tm:YAG crystal with high quality was grown by the Czochralski method. Some of the samples were annealed at 1000℃ for 25h in the air. Chemical corrosion was used to the slices of Tm:YAG crystal before and after air annealing. The etch pits in
(111) plane were observed by Leitz optical microscope and scanning electron microscope (SEM). The shapes of etch pits located in (111) plane
exhibit as a triangle structure. Stress birefringence of Tm:YAG slices as grown and after air annealing was investigated by polarization microscope.
The lattice integrality of Tm:YAG crystal was investigated by high-resolution X-ray diffraction. The air annealing on slices for long time in high
temperature can reduce the total density of the dislocations, and improve the quality of the crystals.

Key words: Tm:YAG crystal, chemical etch, dislocation, annealing

CLC Number:

SONG Ping-Xin,ZHAO Zhi-Wei,XU Xiao-Dong,DENG Pei-Zhen,XU Jun. Defect Study of Tm:YAG Crystal[J]. Journal of Inorganic Materials.

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Defect Study of Tm:YAG Crystal

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