We show that absorbed and stored electromagnetic energy are proportional to the reflection group delay in highly reflective dispersive dielectric mirrors over the high-reflectivity band. Our theoretical considerations are verified by numerical simulations performed on different dielectric mirror structures. The revealed proportionality between group delay and absorbed energy sets constraint on the application of ultrabroadband and/or dispersive dielectric mirrors in broadband or widely tunable, high-power laser systems.
© 2012 Chinese Optics Letters
Peter Gyula Antal and Robert Szipocs, "Relationships among group delay, energy storage, and loss in dispersive dielectric mirrors," Chin. Opt. Lett. 10, 053101- (2012)