Direct observation of localized modes in an open disordered microwave cavity

F. Mortessagne; D. Laurent; O. Legrand; P. Sebbah; Ch Vanneste

doi:10.12693/APhysPolA.112.665

Direct observation of localized modes in an open disordered microwave cavity

F. Mortessagne, D. Laurent, O. Legrand, P. Sebbah, Ch Vanneste

Université Côte d'Azur

Research output: Contribution to journal › Article › peer-review

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Abstract

We present measurements of the spatial intensity distribution of localized modes in a two-dimensional open microwave cavity randomly filled with cylindrical dielectric scatterers. The robustness of these modes with respect to a modification of the boundaries of the scattering region is successfully established. From a comparison with numerically calculated modes, we can extract precise values of the localization length which are in agreement with the measured spectral widths. These results constitute unambiguous signatures of the existence of strongly localized electromagnetic modes in two--dimensional open random media.

Original language	English
Pages (from-to)	665-672
Number of pages	8
Journal	Acta Physica Polonica A
Volume	112
Issue number	4
DOIs	https://doi.org/10.12693/APhysPolA.112.665
State	Published - Oct 2007
Externally published	Yes

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author = "F. Mortessagne and D. Laurent and O. Legrand and P. Sebbah and Ch Vanneste",

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AU - Sebbah, P.

AU - Vanneste, Ch

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AB - We present measurements of the spatial intensity distribution of localized modes in a two-dimensional open microwave cavity randomly filled with cylindrical dielectric scatterers. The robustness of these modes with respect to a modification of the boundaries of the scattering region is successfully established. From a comparison with numerically calculated modes, we can extract precise values of the localization length which are in agreement with the measured spectral widths. These results constitute unambiguous signatures of the existence of strongly localized electromagnetic modes in two--dimensional open random media.

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Direct observation of localized modes in an open disordered microwave cavity

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