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Analysis of the temperature performance of type-II interband cascade lasers
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View: Figures


Image of FIG. 1.
FIG. 1.

Graphical analysis of the temperature performance of type-II ICL in the plane. Solid curve shows the isogain line . Curves show equilibrium electron temperature-concentration dependence ; , ; ; thermoresistance values: (curve ) and (curve ). The dotted lines and show the equilibrium lattice temperature for high and low thermoresistance values.

Image of FIG. 2.
FIG. 2.

Maximum heat-sink temperature vs number of cascades for type-II ICLs. The curve assignment is the same as in Fig. 1. Dashed curve demonstrates the strong depression of the maximum operation temperature by Auger recombination (compare with curve ). Curve illustrates the recovering effect of the lower thermal resistance. Room-temperature operation becomes feasible at the lowest thermoresistance value even for an Auger coefficient as high as .

Image of FIG. 3.
FIG. 3.

Threshold current density as a function of heat-sink temperature . Calculated dependencies; for curves and , the curve assignment is the same as in Fig. 1. Curves 3 and 4 correspond to and . The maximum achievable operating (heat-sink) temperature for each parameter set is indicated by arrows: , , , and . Experimental dependencies measured in cw mode for two devices with different mesa widths: (curve ) and (curve ). Dashed–dotted lines show data from pulsed operation.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Analysis of the temperature performance of type-II interband cascade lasers