激光时空特性对双光束相干合成影响分析

从标量衍射理论出发,分析了相干合成光束远场光强的分布特性,并以两路单元激光为例讨论了激光输出时空特性参数初相位、波前、偏振等特性对相干合成远场光强分布的影响,阐明了相干合成的高功率固体激光器必须采用同一个单频窄线宽种子源分束放大技术的原因,并结合高功率固体激光器实际结构特点与可采取的技术手段,提出光路差、光强比、偏振度...

Effect of the spatio-temporal characteristic of laser on coherent combined beam

This paper analyzes the far-field intensity distribution of coherent combined beam based on scalar diffraction theory,and proves that the characteristics of unit laser determine effect of coherent beams combination.In this paper,the influence of initial phase,wavefront and polarization of unit laser on coherent combined beam are discussed respectively based on combination of dual laser.And this paper explains why the high power solid-state laser must be based on master of split narrow-linewidth single-frequency seed.Then the design of laser based on the parameters,such as optical path difference,intensity ratio,degree of polarization,are proposed and the ranges of those parameters are presented.