Enhanced absorption in very rough overcoated black surfaces

Hugues Giovannini; Claude Amra

doi:10.1117/12.290185

1 October 1997 Enhanced absorption in very rough overcoated black surfaces

Hugues Giovannini, Claude Amra

Proceedings Volume 3133, Optical Thin Films V: New Developments; (1997) https://doi.org/10.1117/12.290185
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

We show how to use dielectric thin films in order to reduce scattering and maximize broad-band absorption in arbitrary rough overcoated black surfaces. A rigorous calculation is developed thanks to an improved differential method, and the results are compared to experiment. Scattering is reduced by a factor 10 (down to 5.10^-3), though the starting bare surface is a standard low-cost black paint (5.10^-2 scattering). Absorption can therefore be optimized up to 0.995.

Citation Download Citation

Hugues Giovannini and Claude Amra "Enhanced absorption in very rough overcoated black surfaces", Proc. SPIE 3133, Optical Thin Films V: New Developments, (1 October 1997); https://doi.org/10.1117/12.290185

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