Morphology of the polar twin structure in Czochralski grown alpha -SrB sub(4)O sub(7) crystals

The arrangement of a polar twin structure in Czochralski grown alpha -SrB sub(4)O sub(7) crystals has been investigated. The transversal twin boundaries are stretched along [1 0 1] and [1 0 0] directions. The lateral twin boundaries are parallel to (0 1 0) plane. The twin structures have an extensio...

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Bibliographic Details
Published in:Journal of crystal growth 2015-04, Vol.416, p.17-20
Main Authors: Zaitsev, A I, Radionov, N V, Cherepakhin, A V, Vasiliev, A D, Zamkov, A V
Format: Article
Language:English
Subjects:
Beams (radiation)
Crystal growth
Crystal structure
Czochralski process
Microtwins
Pyramids
Stability
Twin boundaries
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Summary:The arrangement of a polar twin structure in Czochralski grown alpha -SrB sub(4)O sub(7) crystals has been investigated. The transversal twin boundaries are stretched along [1 0 1] and [1 0 0] directions. The lateral twin boundaries are parallel to (0 1 0) plane. The twin structures have an extension up to centimeter size in all directions. Supposedly, they originate from polysynthetic polar microtwins revealed to form in (1 0 1) and (1 0 1) growth pyramids. The dimensions, planarity and thickness stability of each individual twin are favorable for organizing quasi-phase matching conditions for nonlinear optical doubling of high-aperture beams.
ISSN:0022-0248
DOI:10.1016/j.crysgro.2015.01.004