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  • 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference
  • OSA Technical Digest (Optica Publishing Group, 2019),
  • paper cd_p_2

Effect of annealing on nonlinear optical properties of 70% deuterated DKDP crystal at 355 nm

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Abstract

In Inertial Confinement Fusion (ICF) program, the third harmonic generation crystal (DKDP), known as the tripler, is the the most easily damaged in the whole optical chain [1]. One main reason for this phenomenon is the absorption of UV light increasing nonlinearly with laser radiation intensity [2]. Although the nonlinear optical properties of the KDP crystal has been investigated at the wavelengths of 211, 216, 248, 264, 266, and 355 nm, the properties of the DKDP crystal has been seldom explored. In this paper, in order to explore how the nonlinear absorption and refraction affect the laser-induced damage (LID) of DKDP crystal, the Z-scan technique was employed to measure the third-order optical nonlinearity of 70% deuterated DKDP crystals annealed under different temperatures at the wavelength of 355 nm by a picosecond laser [3].

© 2019 IEEE

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