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Proceedings Paper

Intense THz radiation from laser plasma with controllable waveform and polarization
Author(s): Ya Bai; Peng Liu; Liwei Song; Ruxin Li; Zhizhan Xu
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Paper Abstract

We demonstrate the generation of waveform-controlled THz radiation from air plasma that is produced when carrier envelope phase (CEP) stabilized few-cycle laser pulses undergoes filamentation in ambient air. Elliptically polarized THz waves are generated from air plasma induced by circularly polarized few-cycle laser pulses. Our results reveal that electric field asymmetry in rotating directions of the circularly polarized few-cycle laser pulses produces the enhanced broadband transient currents, and the phase difference of perpendicular laser field components is partially inherited in the generation process of THz emission.

Paper Details

Date Published: 14 March 2015
PDF: 5 pages
Proc. SPIE 9361, Ultrafast Phenomena and Nanophotonics XIX, 93611X (14 March 2015); doi: 10.1117/12.2075401
Show Author Affiliations
Ya Bai, Shanghai Institute of Optics and Fine Mechanics (China)
Peng Liu, Shanghai Institute of Optics and Fine Mechanics (China)
Shanghai Jiao Tong Univ. (China)
Liwei Song, Shanghai Institute of Optics and Fine Mechanics (China)
Ruxin Li, Shanghai Institute of Optics and Fine Mechanics (China)
Zhizhan Xu, Shanghai Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 9361:
Ultrafast Phenomena and Nanophotonics XIX
Markus Betz; Abdulhakem Y. Elezzabi; Kong-Thon Tsen, Editor(s)

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