标题：Nonlinear optical characterizations of monoclinic LaxGd1-xCa4O(BO3)3(x = 1, 0.09, 0.13) single crystals
作者：Liu, Y.Q. ;Yu, F.P. ;Lu, Q.M. ;Yu, X.Q. ;Wang, Z.P. ;Zhao, X. ;Xu, X.G.
作者机构：[Liu, Y.Q. ;Yu, F.P. ;Yu, X.Q. ;Wang, Z.P. ;Zhao, X. ;Xu, X.G. ] State Key Laboratory of Crystal Materials, Shandong University, Jinan; 250100, China; 更多
摘要：The 1064 nm optimal spatial phase matching (PM) direction for LaCa4O(BO3)3(LaCOB) crystals was found to be (113.5, 43.8) with deffof 1.34 pm V-1, angular acceptance of 0.9 mrad cm and walk-off angle of 14.9 mrad, and more than a 56% second-harmonic generation (SHG) conversion efficiency was realized on a sample (4 ×4×6 mm3) cut in this direction, by using a 1064 nm Nd : YAG pico-second laser. The angular noncritical phase-matching (A-NCPM) wavelengths along the y and z axes for LaxGd1-xCOB (x = 0.09, 0.13) crystals were measured. Using a nanosecond laser, the type-I single-pass A-NCPM SHG conversion efficiency along y axis reached 30.2% by taking advantage of the longer crystal sample (4 ×4×27 mm3).
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