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Ultrafast spectroscopy of impact ionization and avalanche multiplication in GaAs
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10.1063/1.2191880
/content/aip/journal/apl/88/13/10.1063/1.2191880
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/13/10.1063/1.2191880
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

[(a) and (b)] Schematic band diagram and corresponding band gap energies within the heterostructure. The vertical arrow pump indicates the photoexcitation of the sample. (c) Photocurrent of the sample for excitation with an pulse at and a temperature of .

Image of FIG. 2.
FIG. 2.

(a) Transmission changes for a probe photon energy of observed after excitation with an pulse at for various electric fields and a temperature of . (b) Corresponding normalized transmission changes for different excitation densities characterized by their low bias photocurrent .

Image of FIG. 3.
FIG. 3.

Screening fields within the heterostructure for two different electric fields extracted from the Monte Carlo simulation of the spatiotemporal carrier dynamics in the sample.

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/content/aip/journal/apl/88/13/10.1063/1.2191880
2006-03-31
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Ultrafast spectroscopy of impact ionization and avalanche multiplication in GaAs
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/13/10.1063/1.2191880
10.1063/1.2191880
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