Improving the arrangement of the planar π-conjugated six-membered-ring (C₃N₃O₃)³⁻ anions in the RE₅(C₃N₃O₃)(OH)₁₂ (RE=Y, Yb, Lu) series leads to strong second harmonic generation responses, short UV cutoffs, and moderate birefringence. This finding opens an avenue for designing target materials with balanced linear and nonlinear optical properties which have potential for practical laser applications.

中文翻译：

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完美编码 RE5(C3N3O3)(OH)12 (RE=Y, Yb, Lu) 家族中的 π 共轭阴离子，具有强二次谐波生成响应和平衡双折射

改进RE ₅ (C ₃ N ₃ O ₃ )(OH) ₁₂ ( RE =Y, Yb, Lu)中平面π共轭六元环(C ₃ N ₃ O ₃ ) ^3-阴离子的排列系列导致强烈的二次谐波产生响应、短的 UV 截止和适度的双折射。这一发现为设计具有平衡线性和非线性光学特性的目标材料开辟了道路，这些材料具有实际激光应用的潜力。