Journal
PHYSICAL REVIEW APPLIED
Volume 18, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevApplied.18.L041001
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Funding
- Swedish Research Council [2017- 04287_VR]
- NanoLund
- Swedish Research Council [2017-04287] Funding Source: Swedish Research Council
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This paper presents detailed simulations of terahertz quantum cascade lasers based on two-well designs, analyzing the factors affecting the maximal operation temperatures and proposing methods to improve the current injection.
Detailed simulations for terahertz quantum cascade lasers based on two-well designs are presented. reproduce the maximal operation temperatures observed and attribute the degradation with temperature the occupation of parasitic levels and thermal backfilling. Furthermore, we demonstrate that the current injection can be conveniently studied by using states, which combine energy selectivity and spatial local-ization. Improving the injection allows achievement of higher maximal operation temperatures around 265 K.
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