Refractive index measurements of poly(methyl methacrylate) (PMMA) from 0.4-1.6 mu m

摘要

Using a transmission-spectrum-based method, the refractive index of a 50 mu m thick sample of poly(methyl methacrylate) (PMMA) was measured as a function of wavelength. To mitigate the effects of nonplane-parallel surfaces, the sample was measured at 16 different locations. The technique resulted in the measurement of index at several thousand independent wavelengths from 0.42 to 1.62 mu m, with a relative RMS accuracy <0.5 x 10(-4) and absolute accuracy <2 x 10(-4).