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Strong terahertz radiation from air plasmas generated by an aperture-limited Gaussian pump laser beam
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10.1063/1.3098357
/content/aip/journal/apl/94/10/10.1063/1.3098357
http://aip.metastore.ingenta.com/content/aip/journal/apl/94/10/10.1063/1.3098357
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic of the setup used for laser driven terahertz generation and detection. An aperture is used to tailor the beam. The inset shows that the optimal polarization angle for the and the beam is around 45°.

Image of FIG. 2.
FIG. 2.

(a) Amplitude of terahertz field vs of the aperture. The inset is the focused laser energy which increases with corresponding to (a). (b) Typical terahertz waveforms with a 6 mm aperture and without aperture limit to the pump laser beam. Their corresponding terahertz spectra are shown in the inset.

Image of FIG. 3.
FIG. 3.

Amplitude of terahertz field vs of the aperture with constant focused laser energy and , respectively. The corresponding focused laser intensity with changes in is shown in the inset.

Image of FIG. 4.
FIG. 4.

Amplitude of terahertz field vs of the aperture under the conditions of different total input energies of the laser pulses before the aperture in (a) and in (b), respectively. The corresponding focused laser energies with changes in are shown in each inset.

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/content/aip/journal/apl/94/10/10.1063/1.3098357
2009-03-12
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Strong terahertz radiation from air plasmas generated by an aperture-limited Gaussian pump laser beam
http://aip.metastore.ingenta.com/content/aip/journal/apl/94/10/10.1063/1.3098357
10.1063/1.3098357
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