Nanjing University Basic Principle Optical property of medium refractive index n,extinction coefficient K 61=n2-K2,62=2nK and n= 方a+1G+月 K-- 2(←6+(6+)2)2 n and &are not independent variable s Dielectric Superlattice Laboratory Nat.Lab.Microstructures Dr.Tao Li taoli@nju.edu.cnNanjing University Op pp y tical property of medium refractive index n, extinction coefficient κ 2 2 2 1 2 1 1 n n , and ε = − = κε κ 1 1 2 2 2 2 1 12 1 1 1 ( ( )) 2 n = ++ ε εε 1 1 2 2 2 2 1 12 1 ( ( )). 2 κ ε εε = −+ + r n and are not independent variable s % ε% Dielectric Superlattice Laboratory Nat. Lab. Microstructures Dr. Tao Li taoli@nju.edu.cn