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Femtosecond acceleration of electrons under high electric fields in bulk GaAs investigated by time-domain terahertz spectroscopy
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10.1063/1.2967857
/content/aip/journal/apl/93/4/10.1063/1.2967857
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/4/10.1063/1.2967857
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Terahertz waveforms emitted from (a) sample 1 and (b) sample 2 measured at for various bias electric fields.

Image of FIG. 2.
FIG. 2.

The height of the initial positive peak, , in the terahertz emission waveforms measured at (normalized by the magnitude of photocurrent) and (normalized by its low-field value) are plotted as a function of the bias electric field for samples 1 (circles), 2 (squares), and 3 (triangles). The dashed line is a guide for the eye.

Image of FIG. 3.
FIG. 3.

The terahertz spectra obtained from the time-domain terahertz traces emitted from sample 2 under various bias fields at (a) and (b) .

Image of FIG. 4.
FIG. 4.

(a) A schematic illustration of the dispersion in GaAs at . (b) A schematic illustration of the - and the satellite valleys at .

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/content/aip/journal/apl/93/4/10.1063/1.2967857
2008-08-01
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Femtosecond acceleration of electrons under high electric fields in bulk GaAs investigated by time-domain terahertz spectroscopy
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/4/10.1063/1.2967857
10.1063/1.2967857
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