Tunable Circularly Polarized Terahertz Radiation from Magnetized Gas Plasma.
Phys Rev Lett
; 114(25): 253901, 2015 Jun 26.
Article
en En
| MEDLINE
| ID: mdl-26197126
ABSTRACT
It is shown, by simulation and theory, that circularly or elliptically polarized terahertz radiation can be generated when a static magnetic (B) field is imposed on a gas target along the propagation direction of a two-color laser driver. The radiation frequency is determined by â[ω(p)(2)+ω(c)(2)/4]+ω(c)/2, where ω(p) is the plasma frequency and ω(c) is the electron cyclotron frequency. With the increase of the B field, the radiation changes from a single-cycle broadband waveform to a continuous narrow-band emission. In high-B-field cases, the radiation strength is proportional to ω(p)(2)/ω(c). The B field provides a tunability in the radiation frequency, spectrum width, and field strength.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Gases em Plasma
/
Magnetismo
/
Modelos Teóricos
Idioma:
En
Revista:
Phys Rev Lett
Año:
2015
Tipo del documento:
Article
País de afiliación:
Alemania