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High-power quantum cascade lasers grown by low-pressure metal organic vapor-phase epitaxy operating in continuous wave above
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10.1063/1.2203964
/content/aip/journal/apl/88/20/10.1063/1.2203964
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/20/10.1063/1.2203964
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

cw and curves of HR coated long lasers with (a) and (b) ridge widths. The heat sink temperature was varied between 240 and in steps of . The optical power data, taken from one laser facet, are not corrected for the estimated 70% collection efficiency of our setup.

Image of FIG. 2.
FIG. 2.

(a) Threshold current density as a function of heat sink temperature for the HR coated, long lasers with (circles) and (squares) ridge width in pulsed (dashed line) and cw modes (solid line). The experimental points (open symbols) are fitted by the expression . (b) Slope efficiency vs temperature deduced from the curves shown in Fig. 1(b) close to threshold. Inset: high-resolution cw spectra as a function of injection current measured with the wide QCL without HR coating at a constant temperature of .

Image of FIG. 3.
FIG. 3.

Room temperature cw differential resistance of the HR coated device as a function of current after 8, 200, and of cw operation at . The discontinuity indicates the position of the threshold current. Inset: wall-plug efficiency as a function of current for temperatures ranging from .

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/content/aip/journal/apl/88/20/10.1063/1.2203964
2006-05-17
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: High-power quantum cascade lasers grown by low-pressure metal organic vapor-phase epitaxy operating in continuous wave above 400K
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/20/10.1063/1.2203964
10.1063/1.2203964
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