Journal
OPTICS EXPRESS
Volume 19, Issue 15, Pages 14594-14603Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.19.014594
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Funding
- Defense Advanced Research Project Agency (DARPA)
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Metal-based plasmonics has a wide range of important applications but is subject to several drawbacks. In this paper, we propose and investigate an all-semiconductor-based approach to plasmonics in mid-infrared (MIR) wavelength range using InAs heterostructures. Our results show that InAs heterostructures are ideal for plasmonics with the shortest plasmon wavelength among common semiconductors. More importantly, as we will show, InAs heterostructures are superior to metal-based plasmonics for MIR applications due to much reduced loss, improved confinement, and ease of tunability of resonant wavelengths through carrier density. Finally, we propose and investigate a monolithic all-semiconductor integrated active plasmonic system with active source, waveguide, and detector all integrated on a chip, realizable in a single epitaxial growth process. Such an all semiconductor based system can be advantageous not only in plasmonics, but also in active metamaterials. (C) 2011 Optical Society of America
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