期刊
JOURNAL OF APPLIED PHYSICS
卷 129, 期 11, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/5.0041509
关键词
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资金
- National Science Foundation [ECCS-1926187]
- NSF [NNCI-1542159]
- Laboratory Directed Research and Development (LDRD) program at Sandia National Laboratories
- U.S. Department of Energy's National Nuclear Security Administration [DE-NA0003525]
This study demonstrates all-epitaxial structures capable of supporting short- and long-range surface plasmon polariton modes in the long-wave infrared region. The epitaxial structures show potential to serve as long-range interconnects or waveguides in plasmonic/optoelectronic systems. Mapping of the SPP dispersion using spectroscopy highlights the applications in the long-wave infrared.
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 ( T 2 SL / n + + / T 2 SL) 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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