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Quasi-phase-matching(QPM) periodical poled LiNbO3 (PPLN) is designed and successfully fabricated to enable second harmonic generation (SHG),The samples were Z-cut 0.5 mm thick and grating period is A=6.8 μm for the first order QPM of contimual wave λ=1.064μm which is emitted by Nd:YAG laser at room temperature 27℃,The output single-pass SHG power was tested by an authorized optical system.The normalized max conversion efficiency is calculated to be 0.25% (W.cm)^-1,The fabrication and parameters calculated method are introduced,and testing scheme is described in this paper,Even some ideas to improve conversion efficiency are offered. 相似文献
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学生是一个正在成长中的人,是在教育的过程中发展起来的。他们能否生活得有趣味,能否学得更好,能否健康成长,能否幸福快乐,能否有良好的情感、态度、价值观,养成教育很关键。 相似文献
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