【摘要】 <正>光束波面曲率测量中最常用的方法是剪切干涉仪及哈特曼网格板投影法.但在小口径光束情况下,条纹的周期大于剪切量时,干涉仪是不适用的.同样,网格板法投影分辨率太低也不适用.衍射成象方法则具有高精度及高分辨率的优点,它弥补了上述两种方法的不足.更多还原

【Abstract】 The wavefront curvature of a laser beam was measured by diffraction imaging, a measurement method which may be applied in measurements. The local wavefront distortion induced by small-scale self-focusing of high power laser beams have been improved.更多还原