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Opt Lett. 2005 Oct 1;30(19):2623-5.

Highly directional radiation generated by a tungsten thermal source.

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1
Laboratoire d'Energétique Moléculaire et Macroscopique, Combustion, Ecole Centrale Paris, Centre National de la Recherche Scientifique, 92295 Châtenay-Malabry Cedex, France. marine.laroche@em2c.ecp.fr

Abstract

We report the design of a tungsten thermal source with extraordinarily high directivity in the near infrared, comparable to the directivity of a CO2 laser. This high directivity is the signature of the long-range correlation of the electromagnetic field in the source plane. This phenomenon is due to the resonant thermal excitation of surface-plasmon polaritons.

PMID:
16208920
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