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Carrier dynamics in InGaAs with embedded ErAs nanoislands
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10.1063/1.2989127
/content/aip/journal/apl/93/12/10.1063/1.2989127
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/12/10.1063/1.2989127
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Time-dependent terahertz pulses transmitted through InGaAs:ErAs samples. The black and the blue curves represent the transmitted terahertz pulses before and after optical excitation , respectively. Amplitudes are normalized to the unexcited pulse amplitude maximum. The inset shows a cross-sectional view of the sample.

Image of FIG. 2.
FIG. 2.

OPTP measurements at various pump fluences with 800 nm pump. (a) Pump-induced transmission change normalized to the unexcited terahertz amplitude maximum as a function of pump delay. (b) Photoinduced conductivity (left -axis) and carrier density (right -axis) vs time delay.

Image of FIG. 3.
FIG. 3.

(a) Transmission change normalized to unity at different fluences. Smooth gray curves show the biexponential fit. (b) Fluence dependent carrier lifetimes: black dots are the measured values and the solid line is the exponential growth fitting.

Image of FIG. 4.
FIG. 4.

Transient reflectivity changes measured in 1550 nm optical pump-probe experiments as a function of pump delay. For comparison is normalized to unity.

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/content/aip/journal/apl/93/12/10.1063/1.2989127
2008-09-24
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Carrier dynamics in InGaAs with embedded ErAs nanoislands
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/12/10.1063/1.2989127
10.1063/1.2989127
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