摘要
本文报道了用熔盐顶部籽晶法生长Ｎｂ浓度（０～１３）ｍｏｌ％的Ｎｂ∶ＫＴＰ晶体的倍频的Ⅱ型相位匹配的截止波长和Ｎｄ∶ＹＡＧ１．０６４２μｍ及Ｎｄ∶ＹＡ１Ｏ３１．０７９５μｍ激光在这些晶体中倍频的最佳相位匹配角的测量结果．从中可看出，由于Ｎｂ５＋的引入使ＫＴＰ晶体倍频的Ⅱ相位匹配的截止波长有效蓝移，目前已使截止波长蓝移至９３７ｎｍ且有效产生４６８．５ｎｍ的倍频蓝光．同时Ｎｂ５＋的引入使Ｎｄ∶ＹＡＧ１．０６４２μｍ激光和Ｎｄ∶ＹＡ１Ｏ３倍频的最佳相位匹配方向产生很大的变化，目前已使Ｎｂ∶ＫＴＰ晶体倍频的最佳相位匹配方向为θ＝８８．３２°、Φ＝０°。
The measurement results of the cut off wavelength and optimum phase matched (PM) angle for Nd∶YAG 1 0642μm and Nd∶YAlO 3 1 0795μm of type Ⅱ second harmonic generation (SHG) phase matched are presented for Nb∶KTP crystals grown by top seed flux method with (0～13)mol% Nb concentration Not only the cut off wavelength but also the optimum PM angle of type Ⅱ SHG PM are largely modified when Nd 5+ dopes into KTP crystals In 13mol% Nb∶KTP crystal,the cut off wavelength of SHG type Ⅱ PM is 937nm,which can effectively produce 468 5nm SHG blue coherent light,in 3mol% Nb∶KTP crystals,the optimum SHG type Ⅱ PM angle of Nd∶YAG 1 0642μm is θ=88 32°,Φ=0°,very close to 90° noncritical PM direction
出处
《光子学报》
EI
CAS
CSCD
1999年第8期688-691,共4页
Acta Photonica Sinica
