Group-delay dispersion measurements of laser mirrors using white-light interferometry

Abstract

In this presentation we analyze three different techniques devised to measure dispersion of chirped mirrors. These methods are direct GD measurement, one-dimensional spectral interferometry and Fourier analysis of white light cross correlation. Each method was tested with the same samples in order to find out their advantages and limitations. It was find out that from the investigated methods the Fourier analysis of white light cross correlation is the most suited technique for fast and accurate dispersion measurement.