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.
High performance “continuum-to-continuum” quantum cascade lasers with a broad gain bandwidth of over
Rent:
Rent this article for
USD
10.1063/1.3484279
/content/aip/journal/apl/97/8/10.1063/1.3484279
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/8/10.1063/1.3484279
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Conduction band diagram of a portion of the active regions and injectors and the moduli squared of the relevant wave functions of the continuum-to-continuum design at an electric field of 69 kV/cm. The layer sequence of one period (starting from the extraction barrier “E,” in angstrom) is 20/ 26/ 21/ 25/21/ 23/ 23/ 21/ 23/ 20/ 25/ 17/ 27/ 17/ 30/ 13/ 11/ 39/ 14/ 38/ 14/ 33, where barrier layers are in bold, well layers are in normal font and the underlined layers are doped .

Image of FIG. 2.
FIG. 2.

EL spectra at at various applied electrical fields as indicated.

Image of FIG. 3.
FIG. 3.

(a) Measured EL FWHM of the continuum-to-continuum design (300 K: squares, 80 K: triangles) and a conventional high performance design (300 K: open circles, 80 K: open triangles). The arrows indicate laser thresholds. (b) Calculated peak energies of dominant transitions (solid squares) and measured energies at EL half maxima (open squares) of the continuum-to-continuum design.

Image of FIG. 4.
FIG. 4.

(a) Light-current-voltage characteristics of a QC laser ( wide, 3 mm long, total peak power from both as-cleaved facets) at different temperatures in pulsed mode (frequency: 5 kHz, pulse width: 100 ns). (b) Threshold current density, WPE, and slope efficiency of ridge lasers of different dimensions (cavity length: 1.5–3.3 mm, ridge width: ) with as cleaved facets. The measured single-facet output power is doubled for two facet (a process we have tested to be valid for as-cleaved Fabry–Perot QC lasers) and corrected for an optical collection efficiency of 74% (verified by comparing the collected power with our two-lenses measurement setup and that obtained by putting the thermopile detector close to the laser front facet).

Image of FIG. 5.
FIG. 5.

WPE and total output power of a BH laser ( wide, 4 mm long) at 80 K and room temperature in pulsed (frequency: 5 kHz, pulse width: 100 ns) and cw mode operation. The measured single-facet optical power is doubled for two facets and corrected for an optical collection efficiency of 74%.

Loading

Article metrics loading...

/content/aip/journal/apl/97/8/10.1063/1.3484279
2010-08-27
2014-04-16
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: High performance “continuum-to-continuum” quantum cascade lasers with a broad gain bandwidth of over 400 cm−1
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/8/10.1063/1.3484279
10.1063/1.3484279
SEARCH_EXPAND_ITEM