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

Alessandra Ciapponi; Frank Wagner; Jean-Yves Natoli; Bertrand Bertussi; François Guillet

doi:10.1117/12.836235

31 December 2009 Photoluminescence and photothermal deflection measurements in KDP crystals for high power applications

Alessandra Ciapponi, Frank Wagner, Jean-Yves Natoli, Bertrand Bertussi, François Guillet

Proceedings Volume 7504, Laser-Induced Damage in Optical Materials: 2009; 750417 (2009) https://doi.org/10.1117/12.836235
Event: Laser Damage Symposium XLI: Annual Symposium on Optical Materials for High Power Lasers, 2009, Boulder, Colorado, United States

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.

Citation Download Citation

Alessandra Ciapponi, Frank Wagner, Jean-Yves Natoli, Bertrand Bertussi, and François Guillet "Photoluminescence and photothermal deflection measurements in KDP crystals for high power applications", Proc. SPIE 7504, Laser-Induced Damage in Optical Materials: 2009, 750417 (31 December 2009); https://doi.org/10.1117/12.836235

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