Growth of Mg-doped Near Stoichiometric LiNbO3 Crystal

Journal of Inorganic Materials

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Growth of Mg-doped Near Stoichiometric LiNbO₃ Crystal

WANG Hai-Li¹; HANG Yin¹; ZHANG Lian-Han¹; ZHU Shi-Ning²; XU Jun¹

1.Shanghai Institute of Optics and Fine Mechanics; Chinese Academy of Sciences; Shanghai 201800; China; 2.State Key Laboratory of Solid Microstructures; Nanjing University; Nanjing 210093; China

Received:2003-09-15 Revised:2003-10-22 Published:2004-09-20 Online:2004-09-20

Abstract

Abstract: A kind of Mg-doped near stoichiometric LiNbO₃ crystal was grown with Czochralski method from
a stoichiometric melt with addition of 11mol% K₂O and 1mol% MgO. Compared with congruent LiNbO₃ crystal, its ultraviolet absorption
edge shifts towards short wavelength and the location and shape of the OH^- infrared absorption band also change distinctly, so that the Mg²⁺
doping concentration can be considered as having reached the optical damage resistant threshold concentration. Acid etching result shows that the
crystal has regional single domain structure.

Key words: LiNbO₃ crystal, near stoichiometric, absorption spectra, domain structure

CLC Number:

O782

WANG Hai-Li,HANG Yin,ZHANG Lian-Han,ZHU Shi-Ning,XU Jun. Growth of Mg-doped Near Stoichiometric LiNbO₃ Crystal[J]. Journal of Inorganic Materials.

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Growth of Mg-doped Near Stoichiometric LiNbO₃ Crystal

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