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Performance comparison of optically pumped type-II midinfrared lasers
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10.1063/1.2010627
/content/aip/journal/jap/98/4/10.1063/1.2010627
http://aip.metastore.ingenta.com/content/aip/journal/jap/98/4/10.1063/1.2010627

Figures

Image of FIG. 1.
FIG. 1.

Top panel: Calculated electron and hole densities for the quaternary-ternary (QT) laser, the quaternary-binary (QB) laser, and the W laser.

Image of FIG. 2.
FIG. 2.

Lasing spectra for the three laser sources.

Image of FIG. 3.
FIG. 3.

Absorbed pump power vs mid-IR output power for the three laser sources.

Image of FIG. 4.
FIG. 4.

(a) Double-ended quantum efficiency vs temperature for the three lasers. (b) Laser internal efficiency vs temperature. The results for a W laser are also shown.

Image of FIG. 5.
FIG. 5.

Waveguide loss vs temperature for (a) the QT laser, (b) the W laser, and (c) the QB laser. The circles are from the Hakki-Paoli derived waveguide loss measurements and the squares are from the waveguide loss determined using Eq. (2).

Image of FIG. 6.
FIG. 6.

Qualitative band-bending diagrams for the QT and QB lasers.

Image of FIG. 7.
FIG. 7.

Small signal gain vs temperature for the QT, QB, and W. Also shown are the results for a QB structure containing 14 quantum wells in a low confinement optical waveguide, i.e., the . The was grown to provide a more directly comparable test structure to the QT and W lasers. The had the same number of QW’s and the same low confinement waveguide as the QT and W lasers. The dashed line gives the approximate gain value required to reach threshold.

Image of FIG. 8.
FIG. 8.

SEPM-calculated small signal gain vs temperature for a 3.4- and W laser. Measured differential quantum efficiency vs temperature for the 3.4- and W lasers.

Tables

Generic image for table
Table I.

type-II quantum well lasers.

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/content/aip/journal/jap/98/4/10.1063/1.2010627
2005-08-23
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Performance comparison of optically pumped type-II midinfrared lasers
http://aip.metastore.ingenta.com/content/aip/journal/jap/98/4/10.1063/1.2010627
10.1063/1.2010627
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