Drude Model+Mie Theory 20nm:24n 0.6 Epsilon 296nme=-0.13 10000 04 0.2 1000 0.0 -0.2 254nme=-0.53 100 -04 -0.6 -0.8 -1.0 1.2 886,()≈1 0.1 200 250 300 400 Wavelength(nm)Drude Model+Mie Theory 2 2 ( ) 1 p r w w w   − 296nm e= -0.13 254nm e= -0.53 20nm:24nm