电光相位调制的Nd∶YAG激光时空相干性变化的研究  

The Spatial-temporal Coherence Alteration of Nd∶YAG Laser under Electro-optical Phase Modulation

作　　者：陈和[1] 李曙光[1] 袁波江[1] 陆璇辉[1] 林强[1] 

机构地区：[1]浙江大学物理系光学研究所,浙江杭州310027

出　　处：《激光与红外》2005年第10期758-761,共4页Laser & Infrared

摘　　要：从实验上得到了由谐振腔直接产生的部分相干光。实验中使用的是氪灯连续泵浦的Nd∶YAG激光器,腔内置入一个高压高频调制的LiNbO3晶体来获得相位调制,有四电极和二电极两种调制方法。通过杨氏双缝和麦克尔逊干涉的实验结果表明,经过相位调制的激光时空相干性都有不同程度的降低,而且调制的不同条件对时间和空间相干性的影响有所不同。The generation of partially coherent laser beam directly from a spatial-temporal phase modulated opticaal resonator is achieved experimentally. Nd：YAG rod pumped by krypton lamp working in continuous wave mode is used in the experiment. The phase modulation is fulfilled by an intra-cavity LiNbO3 electro-optic crystal driven by high voltage. Both the spatial and temporal coherence are weakened by the modulation, and different conditions coursed different impacts on the spatial and temporal coherence.

关 键 词：部分相干 相位调制 ND:YAG激光器 LINBO3 

分 类 号：TN248.13[电子电信—物理电子学]