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Time resolved photocurrent, microwave spectrum, and multiple high-field domains in dc-biased GaAs
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10.1063/1.2360254
/content/aip/journal/apl/89/15/10.1063/1.2360254
http://aip.metastore.ingenta.com/content/aip/journal/apl/89/15/10.1063/1.2360254
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Oscilloscope traces of the transient photocurrent density and (b) its normalized Fourier spectrum at different external electric field values as indicated together with the spectrum normalization coefficient . Transients were measured for a spatial period of the light interference pattern. The illumination intensity corresponds to an average free-carrier concentration of about . For clarity, the vertical scales of successive photocurrents have been shifted.

Image of FIG. 2.
FIG. 2.

(a) Time resolved photocurrent and (b) its normalized Fourier spectrum at two concentrations of the photogenerated carriers: and . Measurements were performed at a fixed grating spacing and dc field .

Image of FIG. 3.
FIG. 3.

(Color online) Normalized Fourier spectra at a stable operating point where the system parameters are the following: grating spacing , averaged free-carrier concentration , and applied field . The inset shows the photocurrent transient of the indicated spectrum.

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/content/aip/journal/apl/89/15/10.1063/1.2360254
2006-10-09
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Time resolved photocurrent, microwave spectrum, and multiple high-field domains in dc-biased GaAs
http://aip.metastore.ingenta.com/content/aip/journal/apl/89/15/10.1063/1.2360254
10.1063/1.2360254
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