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Elaboration et caractérisation de matériaux non linéaires pour la conception de dispositifs laser émettant dans l'ultraviolet

Abstract : This PhD study is devoted to the growth and characterization of two promising NLO crystals for UV laser light generation : Ca5(BO3)3F (CBF) and YAl3(BO3)4 (YAB). Concerning CBF, the influence of thermal gradients and new fluxes have been studied in order to improve the crystal quality. The third harmonic generation at 343 nm in CBF is demonstrated for the first time. 300 mW of average power and 1,5 % conversion efficiency from 1030 to 343 nm have been obtained. The use of the flux LaB3O6 allows the growth YAB crystals by TSSG method. Structural and physical properties as well as extended defects and impurities of these crystals have been characterized. Fourth harmonic generation at 266 nm was performed in YAB and 12,2 % conversion efficiency from 532 to 266 nm has been obtained.
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https://tel.archives-ouvertes.fr/tel-01020851
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Submitted on : Tuesday, July 8, 2014 - 3:53:17 PM
Last modification on : Monday, December 14, 2020 - 9:44:03 AM
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  • HAL Id : tel-01020851, version 1

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Simon Ilas. Elaboration et caractérisation de matériaux non linéaires pour la conception de dispositifs laser émettant dans l'ultraviolet. Autre [cond-mat.other]. Université Pierre et Marie Curie - Paris VI, 2014. Français. ⟨NNT : 2014PA066068⟩. ⟨tel-01020851⟩

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