Chains of nanoscale plasmonic resonators are capable of sub-diffractional waveguiding and have applications in nanophotonics and thermal radiation transport. Practical uses have largely been limited, however, due to high optical losses or low group velocities. In this work, we predict the waveguide performance of a material structure capable of overcoming these limitations: plasmonic resonators embedded in highdielectric nanowires. Due to the enhanced near-field coupling between resonators, we find that the group velocities and propagation lengths for doped Si plasmonic resonators in intrinsic Si nanowires can be increased by up to an order of magnitude compared to the case of isotropic vacuum surroundings. We investigate the impact of resonator aspect ratio, doping, and spacing on waveguide performance, and we find that propagation lengths are maximized for large aspect ratios and high dopant concentrations at small spacings. To study these complex anisotropic systems, we develop a new analytical “absorption spectra” method to extract waveguide information from simple far-field absorption experiments (or simulations) of only two coupled resonators.
Tervo, Eric J., et al. "Sub-diffractional waveguiding by mid-infrared plasmonic resonators in semiconductor nanowires." Nanoscale, vol. 10, no. 12, Mar. 2018. https://doi.org/10.1039/c8nr00701b
Tervo, Eric J., Boyuk, Dmitriy S., Cola, Baratunde A., Zhang, Zhuomin M., & Filler, Michael A. (2018). Sub-diffractional waveguiding by mid-infrared plasmonic resonators in semiconductor nanowires. Nanoscale, 10(12). https://doi.org/10.1039/c8nr00701b
@article{osti_1594762,
author = {Tervo, Eric J. and Boyuk, Dmitriy S. and Cola, Baratunde A. and Zhang, Zhuomin M. and Filler, Michael A.},
title = {Sub-diffractional waveguiding by mid-infrared plasmonic resonators in semiconductor nanowires},
annote = {Chains of nanoscale plasmonic resonators are capable of sub-diffractional waveguiding and have applications in nanophotonics and thermal radiation transport. Practical uses have largely been limited, however, due to high optical losses or low group velocities. In this work, we predict the waveguide performance of a material structure capable of overcoming these limitations: plasmonic resonators embedded in highdielectric nanowires. Due to the enhanced near-field coupling between resonators, we find that the group velocities and propagation lengths for doped Si plasmonic resonators in intrinsic Si nanowires can be increased by up to an order of magnitude compared to the case of isotropic vacuum surroundings. We investigate the impact of resonator aspect ratio, doping, and spacing on waveguide performance, and we find that propagation lengths are maximized for large aspect ratios and high dopant concentrations at small spacings. To study these complex anisotropic systems, we develop a new analytical “absorption spectra” method to extract waveguide information from simple far-field absorption experiments (or simulations) of only two coupled resonators.},
doi = {10.1039/c8nr00701b},
url = {https://www.osti.gov/biblio/1594762},
journal = {Nanoscale},
issn = {ISSN 2040-3364},
number = {12},
volume = {10},
place = {United States},
publisher = {Royal Society of Chemistry},
year = {2018},
month = {03}}
ASME 2007 International Mechanical Engineering Congress and Exposition, Volume 8: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A and Bhttps://doi.org/10.1115/imece2007-41266