Efficient broadband highly dispersive HfO2/SiO2 multilayer mirror for pulse compression in near ultraviolet

Opt Express. 2016 Jun 13;24(12):13628-33. doi: 10.1364/OE.24.013628.

Abstract

We report on design, production and implementation of a highly dispersive broadband dielectric multilayer mirror covering near ultraviolet range from 290 nm to 350 nm. The described mirrors, having 92% spectrally averaged reflectance in the ultraviolet range and ∼ 85 fs of group delay difference, that allow compression to ∼ 7 fs, provide a strong foundation for generation of few-fs pulses in the near ultraviolet.