First measurement of the nonlinear coefficient for Gd1-xLux Ca4O(BO3)3 and Gd1-xScxCa4O(BO3)3 crystals

Martin Thalbitzer Andersen, Jesper Liltorp Mortensen, Sven Germershausen, Peter Tidemand-Lichtenberg, Preben Buchhave, Lucian Gheorghe, Voicu Lupei, Pascal Loiseau, Gerard Aka

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The effective nonlinear coefficient and temperature acceptance bandwidth of three Lu and Sc co-doped GdCa4O(B03)3 type nonlinear crystals were measured. NCPM for SHG in to the blue-UV spectral region can be obtained by controlling the co-dopant concentration. Measurements were based on intra-cavity SHG of a CW Ti:Sapphire laser, and the effective nonlinear coefficients were found to be in the range of 0.5 to 0.6 pm/V for the three crystals used. The FWHM temperature acceptance bandwidth was measured to be more than 35 °C using a 6 mm long Gd0.871Lu0.129Ca4O(BO3)3 crystal. A maximum of 115 mW at 407.3 nm in a single direction was measured using a 6.5 mm long Gd0.96Sc 0.04CaO(BO3)3 crystal.
Original languageEnglish
JournalFirst measurement of the nonlinear coefficient for Gd1-xLu x Ca4O(BO3)3 and Gd 1-xScxCa4O(BO3)3 crystals
Issue number8
Pages (from-to)4893-4901
Publication statusPublished - 2007


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