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DOE OSTI · 1783258

All-epitaxial long-range surface plasmon polariton structures with integrated active materials

Nordin, L.·Petluru, P.·Muhowski, A. J.·Shaner, E. A.·Wasserman, D.
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Abstract

We demonstrate all-epitaxial structures capable of supporting short- and long-range surface plasmon polariton (SRSPP and LRSPP) modes in the long-wave infrared region of the electromagnetic spectrum. The SRSPP and LRSPP modes are bound to the interfaces of a buried heavily doped (n ++ ) semiconductor layer and surrounding quantum-engineered type-II superlattice (T2SL) materials. The surrounding T2SLs are designed to allow optical transitions across the frequency dispersion of the SPP modes. We map the SPP dispersion in our structure using grating-coupled angle- and polarization-dependent reflection and photoluminescence spectroscopy. The epitaxial structures are analytically described using a simplified three-layer system (T2SL/n ++ /T2SL) and modeled using rigorous coupled wave analysis with excellent agreement to our experimental results. The presented structures offer the potential to serve as long-range interconnects or waveguides in all-epitaxial plasmonic/optoelectronic systems operating in the long-wave infrared.

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36 MATERIALS SCIENCEElectromagnetic spectrumEpitaxyOptical devicesOptoelectronic devicesPhotoluminescence spectroscopyPlasmonics: Enabling Functionalities with Novel MaterialsReflection spectroscopySuperlatticesSurface plasmon polaritonsTransition radiation

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Nordin, L., Petluru, P., Muhowski, A. J., Shaner, E. A., Wasserman, D.. 2021-03-18. All-epitaxial long-range surface plasmon polariton structures with integrated active materials. https://doi.org/10.1063/5.0041509

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36 MATERIALS SCIENCE↗