Accuracy design of ultra-low residual reflection coatings for laser optics

Liu Huasong^{1, 2, †}, Yang Xiao¹, Wang Lishuan^{1, 2}, Jiao Hongfei³, Ji Yiqin^{1, 2}, Zhang Feng¹, Liu Dandan¹, Jiang Chenghui¹, Jiang Yugang¹, Chen Deying²

(color online) Optimized design result with taking account into the refractive index inhomogeneity (, ). (a) Relationship between residual reflectance and physical thicknesses of layer H and layer L. (b) Reflectance spectral curves with different design methods.