新型激光自倍频晶体Cr:Nd:GdCa4O(BO3)3

人工晶体学报, 1999, 28(4): 309-313. doi: 10.3969/j.issn.1000-985X.1999.04.001

新型激光自倍频晶体Cr:Nd:GdCa4O(BO3)3

张树君 ^1, , 程振祥 ^2, , 韩建儒 ^3, , 周广勇 ^4, , 邵宗书 ^5, , 陈焕矗 ^6, , 侯学元 ^7, , 孙渝明 ^8, , 李宇飞 ^9, , 刘恩泉 ^10,

1.山东大学晶体材料国家重点实验室,济南,250100

2.山东大学晶体材料国家重点实验室,济南,250100

3.山东大学晶体材料国家重点实验室,济南,250100

4.山东大学晶体材料国家重点实验室,济南,250100

5.山东大学晶体材料国家重点实验室,济南,250100

6.山东大学晶体材料国家重点实验室,济南,250100

7.山东大学光学系,济南,250100

8.山东大学光学系,济南,250100

9.山东大学光学系,济南,250100

10.山东大学光学系,济南,250100

关键词：激光晶体 , 自倍频晶体 , Cr:Nd:GdCOB晶体 , 敏化 , 引上法晶体生长

New Laser Self-frequency-doubling Crystal Cr:Nd:GdCa4O(BO3)3

首次利用提拉法生长了优质铬离子敏化激光自倍频晶体Cr:Nd:GdCa4O(BO3)3(Cr:Nd:GdCOB),发现当铬离子和钕离子双掺时,由于协同效应使铬离子容易进入GdCOB晶体中,测量了Cr:Nd:GdCOB和Nd:GdCOB晶体的室温透过谱和荧光谱.Cr:Nd:GdCOB晶体在蓝紫外区比Nd:GdCOB晶体具有更强的吸收,适合于利用闪光灯泵浦.利用闪光灯泵浦分别对长度为7mm,沿最佳倍频方向(θ＝66.8°,φ＝132.6°)切割的Cr:Nd:GdCOB和Nd:GdCOB晶体进行自倍频实验.Cr:Nd:GdCOB的激发阈值为0.9J,而Nd:GdCOB的激发阈值为1.0J.在10J的输入能量时,Cr:Nd:GdCOB输出绿光能量为2.46mJ,而Nd:GdCOB输出绿光能量为1.96mJ,说明在该晶体中,铬离子对钕离子有很好的敏化作用.

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