Experimental observation of radiation from cherenkov wakes in a magnetized plasma

A proof-of-principle experiment demonstrates the generation of radiation from the Cherenkov wake excited by an ultrashort- and ultrahigh-power pulse laser in a perpendicularly magnetized plasma. The frequency of the radiation is in the millimeter range (up to 200 GHz). The intensity of the radiation...

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Bibliographic Details
Published in:Physical review letters 2002-08, Vol.89 (6), p.065003-065003, Article 065003
Main Authors: Yugami, N, Higashiguchi, T, Gao, H, Sakai, S, Takahashi, K, Ito, H, Nishida, Y, Katsouleas, T
Format: Article
Language:English
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Summary:A proof-of-principle experiment demonstrates the generation of radiation from the Cherenkov wake excited by an ultrashort- and ultrahigh-power pulse laser in a perpendicularly magnetized plasma. The frequency of the radiation is in the millimeter range (up to 200 GHz). The intensity of the radiation is proportional to the magnetic field intensity as expected by theory. Polarization of the emitted radiation is also detected. The difference in the frequency of the emitted radiation between these experiments and previous theory can be explained by the electrons' oscillation in the electric field of a narrow column of ions in the focal region.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.89.065003