Characterization of terahertz emission from a dc-biased filament in air

Journal Article · Mon Sep 07 04:00:00 EDT 2009 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3224944· OSTI ID:21294308

Yanping, Chen; Tiejun, Wang; Marceau, Claude; Chin, See Leang ^[1]; Theberge, Francis; Chateauneuf, Marc; Dubois, Jacques ^[2]; Kosareva, Olga ^[3]

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1. Centre d'Optique, Photonique et Laser (COPL), and Departement de Physique, de genie physique et d'optique, Universite Laval, Quebec, Quebec G1V 0A6 (Canada)
2. Defence Research and Development Canada-Valcartier, 2459 Pie-XI Blvd. North, Quebec, Quebec G3J 1X5 (Canada)
3. International Laser Center, Physics Department, M.V. Lomonosov Moscow State University, Moscow 119992 (Russian Federation)

We demonstrate that the terahertz emission from a dc-biased filament can be regarded as a sum of an elliptically polarized terahertz source (generated by a filament without external electric field) and a linearly polarized terahertz source induced by the external electric field applied to the filament. The peak frequency and linewidth of the linearly polarized terahertz source are related to the average plasma density of the filament.

• OSTI ID: 21294308
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 10 Vol. 95; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AIR
ELECTRIC FIELDS
FILAMENTS
PLASMA DENSITY
PLASMA FILAMENT