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论述了全息合束器的闪烁及其产生原因．讨论了全息光栅光线追迹的两种方法，指出当光栅条纹平行于表面时，这两种光线追迹的结果是一致的，并且可简化为：对平基面的反射型体积全息光栅等效于一块平面反射镜，对于基面为球面的反射型体积全息光栅等效为一块球面反射镜．
Discussed holographic beam combiner and its causes. The two methods of holographic grating ray tracing are discussed. The results show that the two ray tracing results are consistent when the grating fringes are parallel to the surface, and can be simplified as follows: Reflective volume holographic grating In a plane mirror, the base of spherical reflective volume holographic grating is equivalent to a spherical mirror.