Generation of low-frequency radiation by dense hot plasma under pondermotive action of a short laser pulse

Journal Article · Tue May 15 00:00:00 EDT 2012 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S106377611203020X· OSTI ID:22027859

Frolov, A A ^[1]

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1. Russian Academy of Sciences, Joint Institute of High Temperatures (Russian Federation)

The theory of the generation of low-frequency radiation under the pondermotive action of a femtosecond laser pulse on dense hot plasma is developed. It is shown that, at fairly high plasma temperatures, when electron-electron collisions are rare and the low-frequency field is excited under conditions of the anomalous skin effect, the generation efficiency can be close to maximal. The optimal generation conditions are achieved if the carrier frequency of the laser pulse is close to the plasma frequency and the pulse is tightly focused. Under irradiation by pulses with durations of tens to hundreds femtoseconds, terahertz radiation is generated in a broad angular range.

• OSTI ID: 22027859
• Journal Information: Journal of Experimental and Theoretical Physics, Vol. 114, Issue 5; Other Information: Copyright (c) 2012 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
74 ATOMIC AND MOLECULAR PHYSICS
EFFICIENCY
ELECTRON TEMPERATURE
ELECTRON-ELECTRON COLLISIONS
HOT PLASMA
ION TEMPERATURE
IRRADIATION
LANGMUIR FREQUENCY
LASER RADIATION
MICROWAVE RADIATION
PHOTON EMISSION
PLASMA DENSITY
PONDEROMOTIVE FORCE
PULSES
SKIN EFFECT
THZ RANGE