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Single-mode submonolayer quantum-dot vertical-cavity surface-emitting lasers with high modulation bandwidth
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10.1063/1.2358114
/content/aip/journal/apl/89/14/10.1063/1.2358114
http://aip.metastore.ingenta.com/content/aip/journal/apl/89/14/10.1063/1.2358114
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

[(a)–(c)] Characteristic cross-section TEM images of a test sample with SML QD insertion, taken at different regions of the sample. (d) Plan-view TEM image. The arrows in (c) and (d) indicate the diffraction vector. Submonolayer deposition is performed in 0.8 ML InAs cycles. The characteristic feature size is , the QD surface density is .

Image of FIG. 2.
FIG. 2.

(Color online) Light-current-voltage characteristics of a aperture SML QD-VCSEL for 20 and .

Image of FIG. 3.
FIG. 3.

Measured and fitted small signal modulation response at . The single-mode emission spectrum is shown in the inset.

Image of FIG. 4.
FIG. 4.

(Color online) Modulation bandwidth and extracted resonance frequency as a function of the square root of the current above threshold. The modulation current efficiency factor for the aperture device is , and the maximum resonance frequency is .

Image of FIG. 5.
FIG. 5.

(Color online) Damping rate vs squared resonance frequency. The maximum intrinsic bandwidth, resulting from a factor of , is .

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/content/aip/journal/apl/89/14/10.1063/1.2358114
2006-10-02
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Single-mode submonolayer quantum-dot vertical-cavity surface-emitting lasers with high modulation bandwidth
http://aip.metastore.ingenta.com/content/aip/journal/apl/89/14/10.1063/1.2358114
10.1063/1.2358114
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