Shape-controlled growth and characterization of a large KDP crystal

A shape-controlled KDP (KH 2 PO 4 ) crystal up to 305 × 302 × 100 mm 3 in size and 21.5 kg in weight has been grown rapidly. The morphology of the as-grown crystal which was close to the finished optical elements of a Pockels cell enhanced the crystal yield to nearly 100%. We used a Z -cut point see...

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Bibliographic Details
Published in:CrystEngComm 2015-01, Vol.17 (35), p.6669-6673
Main Authors: Tu, Heng, Zhao, Yin, Yue, Yinchao, Fan, Feidi, Hu, Zhanggui
Format: Article
Language:English
Subjects:
Crystal growth
Crystallizers
Crystals
Homogeneity
Morphology
Platforms
Pockels cells
Seeds
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Summary:A shape-controlled KDP (KH 2 PO 4 ) crystal up to 305 × 302 × 100 mm 3 in size and 21.5 kg in weight has been grown rapidly. The morphology of the as-grown crystal which was close to the finished optical elements of a Pockels cell enhanced the crystal yield to nearly 100%. We used a Z -cut point seed and a specially designed crystal holder to adjust the crystal morphology while ensuring sufficient feeding of solute, avoiding friction between the crystal and the platforms, and finally enhancing the crystal yield. The method of transferring the solution from a separate crystallizer for overheating to the crystallizer for crystal growth was used to introduce the seed into the crystallizer without lowering the solution's stability. In order to evaluate the crystal quality under the influence of growth restriction by the platforms, the rocking curves, optical homogeneity, and laser damage threshold of the as-grown crystal in different positions have been studied. The morphology of a shape-controlled KDP crystal which was close to the finished optical elements of a Pockels cell enhanced the crystal yield to nearly 100%.
ISSN:1466-8033
1466-8033
DOI:10.1039/c5ce01318f