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We analyze the mid-infrared emission resulting from the interplay between a type-II superlattice (T2SL) material and semiconductor-based plasmonic “designer metals”. We demonstrate an order of magnitude emission enhancement, accompanied by spectral reshaping, relative to all-dielectric T2SL counterparts and provide a theoretical description of the underlying physics. The all-semiconductor LWIR emitters with integrated plasmonic components, developed in this work, represent novel approach to broadband room-temperature mid-IR sources.
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E. Simmons, L. Nordin, K. Li, A. Briggs, S. Bank, D. Wasserman, V. A. Podolskiy, "Enhanced emission from ultra-thin long wavelength infrared superlattices on epitaxial plasmonic metamaterials," Proc. SPIE 11460, Metamaterials, Metadevices, and Metasystems 2020, 114602U (20 August 2020); https://doi.org/10.1117/12.2568670