Numerical study of Anderson localization of terahertz waves in disordered waveguides

Lapointe, Clayton P.; Zakharov, Pavel; Enderli, Florian; Feurer, Thomas; Skipetrov, Sergey E.; Scheffold, Frank (2014). Numerical study of Anderson localization of terahertz waves in disordered waveguides. epl - a letters journal exploring the frontiers of physics, 105(3), p. 34002. Editions de Physique 10.1209/0295-5075/105/34002

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We present a numerical study of electromagnetic wave transport in disordered quasi-one-dimensional waveguides at terahertz frequencies. Finite element method calculations of terahertz wave propagation within LiNbO3 waveguides with randomly arranged air-filled circular scatterers exhibit an onset of Anderson localization at experimentally accessible length scales. Results for the average transmission as a function of waveguide length and scatterer density demonstrate a clear crossover from diffusive to localized transport regime. In addition, we find that transmission fluctuations grow dramatically when crossing into the localized regime. Our numerical results are in good quantitative agreement with theory over a wide range of experimentally accessible parameters both in the diffusive and localized regime opening the path towards experimental observation of terahertz wave localization.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Applied Physics

UniBE Contributor:

Enderli, Florian and Feurer, Thomas

Subjects:

600 Technology > 620 Engineering

ISSN:

0295-5075

Publisher:

Editions de Physique

Language:

English

Submitter:

Martin Frenz-Lips

Date Deposited:

05 Feb 2015 10:41

Last Modified:

05 Feb 2015 16:11

Publisher DOI:

10.1209/0295-5075/105/34002

ArXiv ID:

1401.5660v1

BORIS DOI:

10.7892/boris.62371

URI:

https://boris.unibe.ch/id/eprint/62371

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