Nanoconcentration of terahertz radiation in plasmonic waveguides

Anastasia Rusina; Maxim Durach; Keith A. Nelson; Mark I. Stockman

doi:10.1117/12.859910

10 September 2010 Nanoconcentration of terahertz radiation in plasmonic waveguides

Anastasia Rusina, Maxim Durach, Keith A. Nelson, Mark I. Stockman

Proceedings Volume 7757, Plasmonics: Metallic Nanostructures and Their Optical Properties VIII; 77571H (2010) https://doi.org/10.1117/12.859910
Event: SPIE NanoScience + Engineering, 2010, San Diego, California, United States

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 R₀ ~ λ₀ 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.

Citation Download Citation

Anastasia Rusina, Maxim Durach, Keith A. Nelson, and Mark I. Stockman "Nanoconcentration of terahertz radiation in plasmonic waveguides", Proc. SPIE 7757, Plasmonics: Metallic Nanostructures and Their Optical Properties VIII, 77571H (10 September 2010); https://doi.org/10.1117/12.859910

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