从膜层内的驻波场分布和对膜系的相移要求出发,利用倍频的设计思想对氧碘激光腔内45°入射高反射镜进行优化设计,得出了满足对632.8nm和1315nm双波长高反射,同时在1315nm处有180°位相延迟的新膜系结构,与传统的设计膜系相比,此膜系大大降低了高折射率层的厚度,薄膜性能有望得到进一步提高。 Based on the distribution of standing wave fields in the film and the requirement of phase shift to the film system, the design idea of ​​frequency doubling was used to optimize the design of the 45 ° high incidence mirror in the oxyiodine laser cavity. The optimized design of the high reflection mirror satisfying 632.8nm and 1315nm Dual-wavelength high-reflectivity, and a 180 ° phase delay at 1315 nm. Compared with the traditional designed film system, this film system greatly reduces the thickness of the high refractive index layer and the film performance is expected to be further improved.