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A terahertz quantum cascade laser grown by low-pressure metalorganic vapor phase epitaxy
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10.1063/1.2924294
/content/aip/journal/apl/92/18/10.1063/1.2924294
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/18/10.1063/1.2924294
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(X-ray diffraction rocking curves of the MOVPE-grown terahertz QCL. Satellite peaks are visible up to the 15th order attesting for the very stable growth rate along the whole structure. Inset: atomic force microscopy image of the epitaxial layer surface showing a step bunched pattern with . The vertical color scale spans .)

Image of FIG. 2.
FIG. 2.

(Output peak power vs injected current curves recorded at different temperatures for a laser bar long and wide processed with a Schottky-like top contact. Laser emission up to is observed in pulsed regime with a threshold current density at . In the inset the threshold current density vs the operating temperature is plotted. A characteristic temperature is extracted.)

Image of FIG. 3.
FIG. 3.

(Current vs voltage curve and output peak power vs injected current curves for a laser bar long and wide. The top contact metallic layer was partially alloyed. A maximum operating temperature of is observed.)

Image of FIG. 4.
FIG. 4.

(Spectral evolution of the lasing emission observed for two different bias levels from a QCl sample long and wide. The spectra were recorded, respectively, at and .)

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/content/aip/journal/apl/92/18/10.1063/1.2924294
2008-05-09
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: A terahertz quantum cascade laser grown by low-pressure metalorganic vapor phase epitaxy
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/18/10.1063/1.2924294
10.1063/1.2924294
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