Measurement of refractive index dispersion of a fused silica plate using Fabry-Perot interference

摘要

We used Fabry-Perot interferometry to measure the refractive indices of a fused silica plate at four different wavelengths ranging from 544 to 1550 nm, giving a detailed analysis on the uncertainty of this experimental method. Because of a small expanded uncertainty of 2.7 x 10(-5) (k = 1.96) obtained using the experimental method, it was possible to make corrections to the existing Sellmeier formula [J. Opt. Soc. Am. 55, 1205 (1965)] for our fused silica sample. The corrected Sellmeier formula resulted in a group index value larger than that evaluated using the Malitson's Sellmeier formula by 3 x 10(-4). We verified this by comparing it with the group index measured with spectral domain interferometry at 1530 nm. (C) 2016 Optical Society of America