【摘要】 模拟腔外式新光束激光器并基于线性衍射理论得到经各种圆波片衍射后,其光轴上的光强分布。发现加带位相差的圆波片衍射后,轴上光强可在很宽的范围内得到加强,但其无穷远处的发散角将增大。更多还原

【Abstract】 The analytical expression for the diffraction distribution on the axis of a Gaussian beam through a circular phase- plate is obtained. It is found that the intensity of the diffracted light is larger than that of the free Gaussian beam in a wide range, but the intensity in the infinite far field is less than that of the free Gaussian beam.更多还原