Infrared spectral filters based on guided-mode resonance with subwavelength structures

E. Sakat; G. Vincent; P. Ghenuche; N. Bardou; S. Collin; F. Pardo; J.-L. Pelouard; R. Haïdar

doi:10.1117/12.2002072

4 February 2013 Infrared spectral filters based on guided-mode resonance with subwavelength structures

E. Sakat, G. Vincent, P. Ghenuche, N. Bardou, S. Collin, F. Pardo, J.-L. Pelouard, R. Haïdar

Proceedings Volume 8631, Quantum Sensing and Nanophotonic Devices X; 863122 (2013) https://doi.org/10.1117/12.2002072
Event: SPIE OPTO, 2013, San Francisco, California, United States

Abstract

We study experimentally and theoretically band-pass filters based on guided-mode resonances in free-standing metal-dielectric structures with subwavelength gratings. A variety of filters are obtained: polarizing filters with lD gratings, and unpolarized or selective polarization filters with 2D gratings, which are shown to behave as crossed-lD structures. In either case, a high transmission (up to ≈ 79 %) is demonstrated, which represents an eight-fold enhancement compared to the geometrical transmission of the grating. We also show that the angular sensitivity strongly depends on the rotation axis of the sample. This behavior is explained with a detailed description of the guided-mode transmission mechanism.

Citation Download Citation

E. Sakat, G. Vincent, P. Ghenuche, N. Bardou, S. Collin, F. Pardo, J.-L. Pelouard, and R. Haïdar "Infrared spectral filters based on guided-mode resonance with subwavelength structures", Proc. SPIE 8631, Quantum Sensing and Nanophotonic Devices X, 863122 (4 February 2013); https://doi.org/10.1117/12.2002072

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KEYWORDS

Electroluminescent displays

Polarization

Gold

Magnetism

Dielectric polarization

Dispersion

Waveguides

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