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Peer-reviewedCC BY 4.0Optics Continuum

Broadband antireflection coatings: simple analytical expressions to determine the optimal refractive indices of double-layer step-down designs

  • Huy van Mai
  • Alexandre Jaffré
  • Emmanuel Blanc
  • David Alamarguy
  • Olivier Schneegans
Open at sourcePDFDOICite

Abstract

Broadband antireflection coatings provide an effective solution to minimize light reflection over a broad wavelength range. Such broadband performance is commonly achieved using multilayer designs composed of more than two layers. However, the design of optimal coatings composed of as few as two layers remains scarcely explored: indeed, determining precisely the optimal refractive indices that the constituent layers shall ideally reach (down to the second decimal place) is still a challenging task. In this work, we propose a simple and precise analytical approach for designing double-layer coatings that achieve optimal antireflection performance across a broad spectral range.

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Cite

BibTeXRIS
BibTeX
@article{mai2026broadband,
  title = {{Broadband antireflection coatings: simple analytical expressions to determine the optimal refractive indices of double-layer step-down designs}},
  author = {Huy van Mai and Alexandre Jaffré and Emmanuel Blanc and David Alamarguy and Olivier Schneegans},
  journal = {Optics Continuum},
  year = {2026},
  month = aug,
  doi = {10.1364/optcon.606480},
  url = {https://centralesupelec.hal.science/hal-05765223v1},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Broadband antireflection coatings: simple analytical expressions to determine the optimal refractive indices of double-layer step-down designs
AU  - Huy van Mai
AU  - Alexandre Jaffré
AU  - Emmanuel Blanc
AU  - David Alamarguy
AU  - Olivier Schneegans
PY  - 2026
DA  - 2026/08/17
JO  - Optics Continuum
DO  - 10.1364/optcon.606480
UR  - https://centralesupelec.hal.science/hal-05765223v1
AB  - Broadband antireflection coatings provide an effective solution to minimize light reflection over a broad wavelength range. Such broadband performance is commonly achieved using multilayer designs composed of more than two layers. However, the design of optimal coatings composed of as few as two layers remains scarcely explored: indeed, determining precisely the optimal refractive indices that the constituent layers shall ideally reach (down to the second decimal place) is still a challenging task. In this work, we propose a simple and precise analytical approach for designing double-layer coatings that achieve optimal antireflection performance across a broad spectral range.
SN  - 2770-0208
ER  -