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Dokumenttyp:
Zeitschriftenaufsatz 
Autor(en):
Mátyás, A.; Chashmahcharagh, G.R.; Kovacs, I.; Lugli, P.; Vijayraghavan, K.; Belkin, M.A.; Jirauschek, C. 
Titel:
Improved terahertz quantum cascade laser with variable height barriers 
Abstract:
Using an ensemble Monte-Carlo analysis, it is found that relaxing the constraint of identical barrier heights can result in an improved temperature performance. Exploiting this additional design degree of freedom, modified structures with non-uniform barrier heights are developed based on the current record temperature design. For an optimized structure with reduced diagonality, we predict an increase of 31 K for the maximum operating temperature. Furthermore, we develop improved designs with th...    »
 
Stichworte:
Quantum cascade lasers Oscillators Phonons Space charge effects Current density 
Zeitschriftentitel:
J. Appl. Phys. 111, 103106 (2012) 
Jahr:
2012 
Jahr / Monat:
2012-03 
Quartal:
1. Quartal 
Monat:
Mar 
Reviewed:
ja 
Sprache:
en 
Verlag / Institution:
AIP Publishing LLC. 
Status:
Erstveröffentlichung 
Format:
Text