Study of dopant distribution in Cr4+:YAG transparent ceramics and its use as passively Q-switching media in Nd:YAG laser delivering 38 mJ per pulse - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Optical Materials: X Année : 2021

Study of dopant distribution in Cr4+:YAG transparent ceramics and its use as passively Q-switching media in Nd:YAG laser delivering 38 mJ per pulse

Résumé

In this work, the role of elaboration parameters (i.e. chemical composition and heat treatments) of Cr:YAG ceramics on their microstructural, optical and laser properties was investigated. Transparent ceramics were manufactured by solid-state reactive sintering under vacuum. Spatial distribution of sintering additives and luminescent dopant (Ca, Mg, Cr 3+ and Cr 4+) has been determined by coupling TEM, LSFI and NanoSIMS complementary techniques. Ca and Mg were found to segregate at grain boundaries whereas Cr appears to be homogenously distributed in Cr:YAG ceramics. Samples were used as saturable absorber of Nd:YAG laser and exhibited good optical properties, i.e. saturation fluence of 4500 J.m-2 , laser pulse energy of 38.8 mJ with pulse duration of 45 ns.
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hal-03410203 , version 1 (31-10-2021)

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Camille Perrière, Rémy Boulesteix, Alexandre Maitre, Benjamin Forestier, Alain Jalocha, et al.. Study of dopant distribution in Cr4+:YAG transparent ceramics and its use as passively Q-switching media in Nd:YAG laser delivering 38 mJ per pulse. Optical Materials: X, 2021, 12, pp.100107. ⟨10.1016/j.omx.2021.100107⟩. ⟨hal-03410203⟩
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