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Infinite-period density-matrix model for terahertz-frequency quantum cascade lasers

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Figure

Fig. 1. Band diagram and wave function plot for the exemplar BTC QCL. The layer thicknesses, starting with the injection barrier (until dotted horizontal line), are 5.0/14.4/1.0/11.8/1.0/14.4/2.4/14.4/2.413.2/3.0/12.4/3.2/12.0/4.4/12.6 nm,
Fig. 3. Current density versus electric field calculated using RE (red) and DM models (blue)
Fig. 6. L–I –V characteristics of the BTC device at 20 K for pulsed operation.
Fig. 7. L − I characteristics for different cold finger temperatures. Full lines

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