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Ultrafast gain dynamics in InP quantum-dot optical amplifiers
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10.1063/1.3518715
/content/aip/journal/apl/97/21/10.1063/1.3518715
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/21/10.1063/1.3518715
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Spectra of (a) amplified spontaneous emission and (b) absorption from the investigated InP QD optical amplifier. A sketch of the sample structure is given. The top inset shows the modal gain at wavelengths of 720 (large QDs) and 740 nm (very large QDs). The spectrum of the pulses used in the pump-probe experiment is shown in (a).

Image of FIG. 2.
FIG. 2.

[(a) and (b)] Pump-induced gain (symbols) and (c) refractive index dynamics of the InP QD optical amplifier. The gain dynamics of an InAs/GaAs QD amplifier (Refs. 7 and 10) are shown for comparison (dashed curves). Injection currents and corresponding modal gains are indicated.

Image of FIG. 3.
FIG. 3.

Linewidth enhancement factor for a thermalized carrier distribution (see text) vs small signal gain in the InP/AlGaInP QD optical amplifier (cross) compared to the InAs/GaAs amplifier (open square).

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/content/aip/journal/apl/97/21/10.1063/1.3518715
2010-11-22
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Ultrafast gain dynamics in InP quantum-dot optical amplifiers
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/21/10.1063/1.3518715
10.1063/1.3518715
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