本工作采用二价Ca离子作为电荷补偿离子由提拉法生长出了具有高光学质量的调Q开关晶体Cr4+:YAG.所生长的晶体在空气中退火(1450℃)50小时后,晶体的颜色明显加深.吸收光谱测量表明晶体中的Cr4+离子浓度得到显著提高.在闪光灯泵浦的Nd:YAG激光器上对不同透过率、退火后的Cr4+:YAG晶体进行了被动调Q实验.结果表明所生长出的Cr4+:YAG晶体对Nd:YAG激光器具有很好的调Q作用.
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