Study on the temperature gradient evolution of large size nonlinear crystal based on the fluid-solid coupling theory

F. Z. Sun; P. Zhang; Y. C. Liang; L. H. Lu

doi:10.1117/12.2068954

18 September 2014 Study on the temperature gradient evolution of large size nonlinear crystal based on the fluid-solid coupling theory

F. Z. Sun, P. Zhang, Y. C. Liang, L. H. Lu

Author Affiliations +

Proceedings Volume 9282, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 92821N (2014) https://doi.org/10.1117/12.2068954
Event: 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2014), 2014, Harbin, China

Abstract

In the non-critical phase-matching (NCPM) along the Θ =90° direction, ADP and DKDP crystals which have many advantages, including a large effective nonlinear optical coefficient, a small PM angular sensitivity and non beam walk-off, at the non-critical phase-matching become the competitive candidates in the inertial confinement fusion(ICF) facility, so the reasonable temperature control of crystals has become more and more important .In this paper, the fluid-solid coupling models of ADP crystal and DKDP crystal which both have anisotropic thermal conductivity in the states of vacuum and non-vacuum were established firstly, and then simulated using the fluid analysis software Fluent. The results through the analysis show that the crystal surface temperature distribution is a ring shape, the temperature gradients in the direction of the optical axis both the crystals are 0.02°C and 0.01°C due to the air, the lowest temperature points of the crystals are both at the center of surface, and the temperatures are lower than 0.09°C and 0.05°C compared in the vacuum and non-vacuum environment, then propose two designs for heating apparatus.

Citation Download Citation

F. Z. Sun, P. Zhang, Y. C. Liang, and L. H. Lu "Study on the temperature gradient evolution of large size nonlinear crystal based on the fluid-solid coupling theory", Proc. SPIE 9282, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 92821N (18 September 2014); https://doi.org/10.1117/12.2068954

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