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14 March 2015 Intense THz radiation from laser plasma with controllable waveform and polarization
Ya Bai, Peng Liu, Liwei Song, Ruxin Li, Zhizhan Xu
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Proceedings Volume 9361, Ultrafast Phenomena and Nanophotonics XIX; 93611X (2015) https://doi.org/10.1117/12.2075401
Event: SPIE OPTO, 2015, San Francisco, California, United States
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.
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Ya Bai, Peng Liu, Liwei Song, Ruxin Li, and Zhizhan Xu "Intense THz radiation from laser plasma with controllable waveform and polarization", Proc. SPIE 9361, Ultrafast Phenomena and Nanophotonics XIX, 93611X (14 March 2015); https://doi.org/10.1117/12.2075401
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KEYWORDS
Terahertz radiation
Plasma
Polarization
Laser stabilization
Plasma generation
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