Scientific Reports (Nov 2017)

Design of dual-band cold mirrors

  • Xiaodong Wang,
  • Bo Chen

DOI
https://doi.org/10.1038/s41598-017-15824-5
Journal volume & issue
Vol. 7, no. 1
pp. 1 – 6

Abstract

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Abstract Dual-band cold mirrors are designed based on third-order of 121.6 nm multilayers, and they are only composed of LaF3 and MgF2. The designed mirrors have a high reflectance at 121.6 nm and 280 nm, and a low reflectance in visible waveband; they also have a narrow bandwidth of 4 nm at 121.6 nm, and low sidelobe ripples of two stopbands. A broadband antireflection coating and an asymmetrically Gaussian-apodization of thickness-modulated design method are proposed to eliminate sidelobe ripples of the reflection zone.