There are presented special laser mirrors exhibiting high reflectivity and negative group delay dispersion over broad frequency range. These dielectric laser mirrors are enabled to compression of the generated radiation and offer a general solution for broadband feedback and dispersion control in femtosecond laser systems. Such mirrors would been used to OPO systems, to chirped pulse amplification systems and pulse compressors.
Jerzy Ciosek, Jerzy Ciosek,
"Chirped mirrors for compression of pulses to femtoseconds range", Proc. SPIE 4237, Laser Technology VI: Progress in Lasers, (4 October 2000); doi: 10.1117/12.402859; https://doi.org/10.1117/12.402859