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Anomalous enhancement of terahertz radiation from semi-insulating GaAs surfaces induced by optical pump
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10.1063/1.2338805
/content/aip/journal/apl/89/8/10.1063/1.2338805
http://aip.metastore.ingenta.com/content/aip/journal/apl/89/8/10.1063/1.2338805
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Experimental setup for the pump-generation measurements.

Image of FIG. 2.
FIG. 2.

Wave forms of terahertz radiation observed at a series of pump-generation delay times. The inset shows the peak amplitude of the radiated terahertz pulse as a function of the delay time; the solid curve is the calculated data using the model described in the text. To obtain this agreement, we use a trapping time constant of .

Image of FIG. 3.
FIG. 3.

Fourier spectra of the terahertz pulses at a series of pump-generation delay times deduced from Fig. 2; the inset shows the peak position of the emission spectra as a function of delay time.

Image of FIG. 4.
FIG. 4.

Peak amplitude of the radiated terahertz pulse as a function of the pump power absorbed by the GaAs. The solid curve is the calculated data.

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/content/aip/journal/apl/89/8/10.1063/1.2338805
2006-08-25
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Anomalous enhancement of terahertz radiation from semi-insulating GaAs surfaces induced by optical pump
http://aip.metastore.ingenta.com/content/aip/journal/apl/89/8/10.1063/1.2338805
10.1063/1.2338805
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