We report direct measurements of the frequency dependence of the optical group delay for a number of optical components commonly used in femtosecond optics. We have investigated the group-delay errors that occur on reflection from metal and dielectric mirrors under various conditions and passage through devices that introduce angular dispersion. We obtain measurement accuracy of about ±1 fsec over the spectral range of 400–750 nm.
© 1988 Optical Society of America
Wayne H. Knox, Nathaniel M. Pearson, Kathryn D. Li, and Charles A. Hirlimann, "Interferometric measurements of femtosecond group delay in optical components," Opt. Lett. 13, 574-576 (1988)