Single-stack multilayer infrared mirrors with selectable higher-order interference peaks
Research output: Contribution to journal › Article › Research › peer-review
Authors
Organisational units
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 language | English |
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Pages (from-to) | 7268-7277 |
Number of pages | 10 |
Journal | Applied Optics |
Volume | 63.2024 |
Issue number | 27 |
DOIs | |
Publication status | Published - 20 Sept 2024 |