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Schematic conduction band diagram and moduli squared of the relevant wavefunctions of injector/active/injector parts in the active region. An electric field of was applied to align the structure. (b) Schematic illustration of the lower energy states and SPC-depopulation process.
Experimental and simulated x-ray diffraction patterns of the wafer.
Intersubband electroluminescence spectra of the device without stripe structure at .
The cw current–light output characteristics of a HR coated, wide, and long laser at different heat sink temperatures. The voltage-current characteristics at 0 and are also shown. The inset shows the laser spectrum at .
Threshold current densities as functions of heat sink temperature in cw and pulsed operations. The dashed curves represent fits by the empirical exponential function, .
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