Single-stack multilayer infrared mirrors with selectable higher-order interference peaks

Research output: Contribution to journalArticleResearchpeer-review

Authors

  • Ronald Meisels
  • J. Manara
  • M. Arduini
  • Uwe Schulz
  • J. O. Peters
  • T. M. Gartner

External Organisational units

  • Center for Applied Energy Research e.V. (CAE)
  • Lufthansa Technik AG
  • DLR Deutsches Zentrum für Luftfahrt

Abstract

A concept for the design of single-stack multilayer mirrors with multiple reflection peaks is presented. Its realization in the infrared is demonstrated by the sputter deposition of TiO2/Al2O3 bilayers on sapphire and HastelloyX substrates and corresponding reflection measurements. Even or odd higher-order interference peaks are selected by adjusting the optical thicknesses of the individual layers. The peak positions are very well reproduced by multiple scattering calculations. With the HastelloyX substrate, a potential application for high temperatures and aggressive atmospheres, e.g., in aircraft turbines, is addressed. A design for matching up to three turbine gas emission bands (CO2, H2O) is proposed.

Details

Original languageEnglish
Pages (from-to)7268-7277
Number of pages10
JournalApplied Optics
Volume63.2024
Issue number27
DOIs
Publication statusPublished - 20 Sept 2024