title: Photoluminescence characterization of KH₂PO₄ crystal: application to three-dimensional growth-sector identification.
abstract: In this work, rapidly grown KH2PO4 (KDP) crystals extracted from the prismatic and the pyramidal growth sectors of crystal boules were analyzed using photoluminescence measurements. From the spectra, we deduced a robust criterion to discriminate between both growth sectors in an unknown KDP plate. Moreover, spatially resolved photoluminescence was shown to enable a local probing of different planes in the bulk of the material leading to accurate and nondestructive three-dimensional mapping of the sector boundary, which is often the weakest point in terms of laser-damage resistance in rapidly grown KDP crystals.
authors.forename: Céline
authors.initials: C
authors.lastname: Gouldieff
authors.forename: Frank R
authors.initials: FR
authors.lastname: Wagner
authors.forename: Bertrand
authors.initials: B
authors.lastname: Bertussi
authors.forename: François
authors.initials: F
authors.lastname: Guillet
authors.forename: Jean-Yves
authors.initials: JY
authors.lastname: Natoli