The frequency-dependent group delay of dielectric mirrors was measured by spectrally resolved white-light interferometry. Chirped mirrors and thin-film Gires-Tournois interferometers designed for dispersion control in a femtosecond Ti:sapphire laser oscillator-amplifier system were tested with a group-delay resolution of ±0.2 fs and a spectral resolution of ~1 nm over the spectral range of 670–870 nm.
© 1995 Optical Society of America
A. P. Kovács, K. Osvay, Zs. Bor, and R. Szipöcs, "Group-delay measurement on laser mirrors by spectrally resolved white-light interferometry," Opt. Lett. 20, 788-790 (1995)