期刊
ACS PHOTONICS
卷 5, 期 8, 页码 3051-3056出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsphotonics.8b00288
关键词
rare-earth monopnictide; semimetal; tunable metal; epitaxial metal; mid-infrared optoelectronics; plasmonics; molecular beam epitaxy
类别
资金
- Young Investigators Research Program from the Air Force Scientific Office of Scientific Research [AFOSR YIP FA9550-10-1-0182]
- Multidisciplinary University Research Initiative from the Air Force Office of Scientific Research (AFOSR MURI Award) [FA9550-12- 1-0488]
We demonstrate that plasmonic response can be tuned spectrally via the alloy composition of an epitaxial semimetallic film. Specifically, attenuated total reflectance studies show that the surface plasmon resonance of rare-earth monopnictide LaxLu1-xAs alloy films can be tuned across the mid-IR, while lattice-matching to technologically important substrates. The electrical properties are a strong function of the composition, which, in turn, manifests as tunability of the optical properties. The ability to produce tunable (semi) metals that can be epitaxially integrated with III-V emitters and absorbers is expected to enable a new generation of novel nanophotonic device architectures and functionality.
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