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Proceedings Paper

Photoluminescence and photothermal deflection measurements in KDP crystals for high power applications
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Paper Abstract

KDP is a non linear optical crystal used for frequency conversion in high power applications. In this paper we present results of optical non-destructive measurements on different fast growth KDP crystals in order to characterize the precursors responsible for laser-induced damage. We performed two types of analysis: the first one is temporally resolved photoluminescence excited by a pulsed Nd:YAG laser at 4.66 eV and 3.49 eV (266 nm and 355 nm). The second is spatially resolved photothermal deflection pumped by a CW Argon laser at 3.53 eV (351 nm). With these two complementary techniques we highlight the presence of large scale inhomogeneities and we discriminate nano-scale defects statistically distributed in the bulk of the crystals.

Paper Details

Date Published: 31 December 2009
PDF: 9 pages
Proc. SPIE 7504, Laser-Induced Damage in Optical Materials: 2009, 750417 (31 December 2009);
Show Author Affiliations
Alessandra Ciapponi, Institut Fresnel, CNRS, Univ. Aix Marseille (France)
Frank Wagner, Institut Fresnel, CNRS, Univ. Aix Marseille (France)
Jean-Yves Natoli, Institut Fresnel, CNRS, Univ. Aix Marseille (France)
Bertrand Bertussi, CEA, Le Ripault (France)
François Guillet, CEA, Le Ripault (France)

Published in SPIE Proceedings Vol. 7504:
Laser-Induced Damage in Optical Materials: 2009
Gregory J. Exarhos; Vitaly E. Gruzdev; Detlev Ristau; M. J. Soileau; Christopher J. Stolz, Editor(s)

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