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Origins of optical defects in rapidly grown DKDP crystals


DKDP crystals were rapidly grown by a novel method under stationary conditions. The optical homogeneity of slabs cut from them was investigated. Wavefront distortions were found to be located in a specific growth sub-sector and several contributing sources were identified: point structural defects in the bulk, inhomogeneous surface losses of deuterium and surface planarity. A correlation has been established between all the sources explaining their joint localization and the relationship between optical inhomogeneity and crazing. The relative importance of each contribution was evaluated leading to an estimated bulk refractive index inhomogeneity of a few 10-6 to 1.10-5 for these DKDP crystals, which are similar to those previously observed for KDP rapidly grown by the polythermal method.

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Publication details

The article was received on 05 Oct 2018, accepted on 14 Nov 2018 and first published on 14 Nov 2018

Article type: Paper
DOI: 10.1039/C8CE01693C
Citation: CrystEngComm, 2018, Accepted Manuscript
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    Origins of optical defects in rapidly grown DKDP crystals

    J. Piquard, J. Zaccaro, B. Pintault, C. Maunier and A. Ibanez, CrystEngComm, 2018, Accepted Manuscript , DOI: 10.1039/C8CE01693C

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