Morphology of the polar twin structure in Czochralski grown α-SrB4O7 crystals
Abstract
The arrangement of a polar twin structure in Czochralski grown α-SrB4O7 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 bar) and (1 bar 0 1 bar) 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.
- Publication:
-
Journal of Crystal Growth
- Pub Date:
- April 2015
- DOI:
- 10.1016/j.jcrysgro.2015.01.004
- Bibcode:
- 2015JCrGr.416...17Z
- Keywords:
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- A1. Optical microscopy;
- A2. Czochralski method;
- B1. Borates;
- Growth twins;
- Nonlinear optic materials