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- W53412478 abstract "KTP晶体是一种优良的非线性光学晶体 ,若掺入激活离子Nd3 +可望其成为激光自倍频晶体。我们的前期工作表明 ,采用高温溶液籽晶降温法生长单掺Nd3 +的KTP(即KTNP)晶体时 ,Nd3 +的分配系数极小 ,且当溶液中Nd3 +浓度≥ 1 2 % (mol% )时即会析出紫红色NdPO4晶相 ,故无法进一步提高KTNP晶体中的Nd3 +浓度而达到激光自倍频的要求。为此 ,我们选择Nd5 +作为协同离子掺入KTNP晶体中部分取代Ti4+,以期补偿由于Nd3 +取代Ti4+时带来的电荷不平衡。结果发现这种协同作用非常显著。例如 ,掺Nd5 +1 %后 ,Nd3 +的分配系数比单掺Nd3 +增大了一个数量级以上 (约 1 2倍 ) ,同时NdPO4在体系中的溶解度也略有增大。掺Nd5 +后晶体生长习性变化很大 ,a向生长速率几乎为零 ,同属 [0 1 0 ]晶带的所有晶面均被平行于 [0 1 0 ]方向的细密台阶所代替 ,经细致观测这些台阶发现 ,每个台阶均由 {1 0 0 }、{6 0 1 }和 {2 0 1 }面族窄细的相应晶面组成。根据以上结论 ,我们采用a向尺寸较大的籽晶 ,在Nb5 +浓度达 1 %～..." @default.
- W53412478 created "2016-06-24" @default.
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- W53412478 date "2000-01-01" @default.
- W53412478 modified "2023-09-24" @default.
- W53412478 title "Nb~(5+)对KTNP单晶生长的影响研究" @default.
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