Designing broadband dispersive mirrors in the mid-infrared spectral range: a theoretical study

The study reports practically important and interesting results on designing dispersive mirrors (DMs) operating in the mid-infrared spectral range from 3 to 18 mu m. The admissible domains of the most important design specifica-tions, the mirror bandwidth and group delay variation, were constructed. Estimations of the required total coating thickness, thickness of the thickest layer, and expected number of layers are obtained. The results are confirmed by an analysis of several hundreds of DM design solutions. (c) 2023 Optica Publishing Group

Automated summary

This study reports the important and interesting results of designing dispersive mirrors (DMs) for the mid-infrared spectral range. The study constructs the permissible domains of the most important design specifications, such as mirror bandwidth and group delay variation. Estimations of the required total coating thickness, thickness of the thickest layer, and expected number of layers are obtained. The results are validated through an analysis of several hundreds of DM design solutions.