1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Influence of doping on the performance of terahertz quantum-cascade lasers
Rent:
Rent this article for
USD
10.1063/1.2711710
/content/aip/journal/apl/90/10/10.1063/1.2711710
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/10/10.1063/1.2711710

Figures

Image of FIG. 1.
FIG. 1.

Calculated band structure at a field of of our samples. One cascade is marked with the box. The growth sequence in starting from the left is , where the barriers are marked bold and the doped well is underlined. The optical transition happens between the wave functions marked with 3, 4 (upper laser states), and 2 (lower laser state). The lower laser state is depopulated into the ground states , , and of the next cascade by a LO phonon. The inset shows a (dashed line) and a (dash-dotted line) of sample G951 at . The two kinks in the correspond to the alignment and the misalignment of the cascades.

Image of FIG. 2.
FIG. 2.

Threshold current density (dashed line) and (dash-dotted line) at as a function of the sheet density. Both rise linearly with the doping concentration.

Image of FIG. 3.
FIG. 3.

Field vs current density. All samples lase in a narrow field region, between 8 and . The inset shows a of a nominally undoped sample. This structure shows the similar alignment and misalignment of the cascades beginning at .

Tables

Generic image for table
Table I.

Doping concentration, threshold current density , and growth deviation obtained by x-ray diffraction analysis for all samples. The x-ray diffraction results of H011 show peak splitting.

Loading

Article metrics loading...

/content/aip/journal/apl/90/10/10.1063/1.2711710
2007-03-05
2014-04-20
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Influence of doping on the performance of terahertz quantum-cascade lasers
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/10/10.1063/1.2711710
10.1063/1.2711710
SEARCH_EXPAND_ITEM