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Nanoconcentration of terahertz radiation in plasmonic waveguides

Author(s)
Rusina, Anastasia; Durach, Maxim; Nelson, Keith Adam; Stockman, Mark I.
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Abstract
Here, we establish the principal limits for the nanoconcentration of the THz radiation in metal/dielectric waveguides and determine their optimum shapes required for this nanoconcentration. We predict that the adiabatic compression of THz radiation from the initial spot size of R[subscript 0] ~ λ[subscript 0] to the final size of R = 100 - 250 nm can be achieved with the THz radiation intensity increased by a factor of ×10 to ×250. This THz energy nanoconcentration will not only improve the spatial resolution and increase the signal/noise ratio for the THz imaging and spectroscopy, but in combination with the recently developed sources of powerful THz pulses will allow the observation of nonlinear THz effects and a carrying out a variety of nonlinear spectroscopies (such as two-dimensional spectroscopy), which are highly informative. This will find a wide spectrum of applications in science, engineering, biomedical research, environmental monitoring.
Date issued
2010-08
URI
http://hdl.handle.net/1721.1/71898
Department
Massachusetts Institute of Technology. Department of Chemistry
Journal
Plasmonics: Metallic Nanostructures and Their Optical Properties VIII
Publisher
SPIE
Citation
Rusina, Anastasia et al. “Nanoconcentration of Terahertz Radiation in Plasmonic Waveguides.” Proc. SPIE, 2010. 7757 77571H. © 2010 SPIE
Version: Final published version
ISBN
978-0-8194-8253-2
ISSN
0277-786x

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