Impurities detection by optical techniques in KH2PO4 crystals
| Autor: | Fabien Pilon, Audrey Surmin, Hervé Piombini, Christophe Dujardin, X. Le Borgne, Matthieu Pommiès, Bertrand Bertussi, Jean-Claude Birolleau, David Damiani |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Materials science
business.industry Photothermal therapy Laser Fluorescence Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Photoexcitation Optics Impurity law Electrical and Electronic Engineering Physical and Theoretical Chemistry Inductively coupled plasma business Absorption (electromagnetic radiation) Atomic emission spectrometry |
| Zdroj: | Optics Communications. 275:372-378 |
| ISSN: | 0030-4018 |
| DOI: | 10.1016/j.optcom.2007.03.057 |
| Popis: | In this paper we examine how optical techniques can be used for impurities (or defects) detection and identification in KH 2 PO 4 (KDP) components. This is important in so far as some of these defects are responsible for a much weaker than expected Laser-Induced Damage Threshold (LIDT) in these materials, i.e. for a weaker resistance to a laser shot. KDP materials are investigated by photothermal deflection, fluorescence and photoexcitation with the aim of localizing and identifying the laser-induced damage precursors. The rapidly grown KDP crystals are shown to be heterogeneous from the absorption, fluorescence and composition point of view. Impurities concentrations are measured directly by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES) and tentatively correlated to some optical characteristics and to the LIDT of KDP materials. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect