This article is cited in 42 papers

PLASMA, GASES

Generation of terahertz radiation upon the optical breakdown of a gas

A. M. Bystrov, N. V. Vvedenskii, V. B. Gil'denburg

Institute of Applied Physics, Russian Academy of Sciences, Nizhnii Novgorod

Abstract: Terahertz radiation of plasma oscillations excited upon the optical (axicon) breakdown of a gas in the presence of external fields of other frequency ranges has been analyzed. It has been shown that the spectra and intensity of oscillations and radiation generated by them depend strongly on the character of the spatiotemporal evolution of the formed plasma. The intensity is maximal upon the rapid formation of the plasma with a sharp boundary and decreases to very low values for objects with a smooth density profile. New schemes and regimes of break-down have been proposed, which make possible, according to preliminary estimates, an emitted energy of about 10 mJ with moderate intensities of ionizing laser radiation.

PACS: \vspace*{1mm}52.35.-g, 52.38.-r, 52.59.Ye

Received: 26.09.2005
Revised: 02.11.2005

 English version: Journal of Experimental and Theoretical Physics Letters, 2005, 82:12, 753–757

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