Double longitudinal-optical phonon intrawell depopulated terahertz quantum cascade structures: Electron transport modeling using a density matrix method

2021 ◽  
Vol 118 (24) ◽  
pp. 241107
Author(s):  
Will Freeman
Keyword(s):  
Electron Transport ◽  
Density Matrix ◽  
Optical Phonon ◽  
Matrix Method ◽  
Longitudinal Optical ◽  
Transport Modeling ◽  
Longitudinal Optical Phonon ◽  
Quantum Cascade ◽  
Quantum Cascade Structures

GaAs/AlGaAs Quantum Cascade Lasers Based on Double Resonant Electron – LO Phonon Transitions

2005 ◽  
Vol 494 ◽  
pp. 25-30 ◽  
Author(s):  
A. Mirčetić ◽  
D. Indjin ◽  
V. Milanović ◽  
P. Harrison ◽  
Z. Ikonić ◽  
...  
Keyword(s):  
Optical Phonon ◽  
Quantum Cascade Lasers ◽  
Longitudinal Optical ◽  
Equation Model ◽  
Longitudinal Optical Phonon ◽  
Quantum Cascade ◽  
Resonant Electron ◽  
Efficient Extraction ◽  
Output Characteristics ◽  
Cascade Lasers

In this paper a procedure for the global optimization of mid-infrared GaAs/AlGaAs quantum cascade lasers that relies on the method of simulated annealing is presented. We propose a double longitudinal optical phonon resonance design obtained via a ladder of three states, with subsequent pairs separated by optical phonon energy. Addition of an extra level decreases the lower laser level population by enabling an efficient extraction into the injector region. The output characteristics of the optimized structures are calculated using the full self–consistent rate equation model, which includes all of the relevant scattering mechanisms. We also presented the experimentally measured output characteristics of an initial device, which are in agreement with the numerically calculated values, confirming the good design capabilities of the applied procedure.

3.4-THz quantum cascade laser based on longitudinal-optical-phonon scattering for depopulation

2003 ◽  
Vol 82 (7) ◽  
pp. 1015-1017 ◽  
Author(s):  
Benjamin S. Williams ◽  
Hans Callebaut ◽  
Sushil Kumar ◽  
Qing Hu ◽  
John L. Reno
Keyword(s):  
Quantum Cascade Laser ◽  
Optical Phonon ◽  
Phonon Scattering ◽  
Longitudinal Optical ◽  
Longitudinal Optical Phonon ◽  
Quantum Cascade ◽  
Optical Phonon Scattering

Tuning of the intersubband emission below the longitudinal optical phonon energy in GaAs/AlGaAs quantum cascade emitters

2003 ◽  
Vol 83 (6) ◽  
pp. 1063-1065
Author(s):  
S. S. Dhillon ◽  
A. G. Davies ◽  
H. E. Beere ◽  
E. H. Linfield ◽  
D. A. Ritchie ◽  
...  
Keyword(s):  
Optical Phonon ◽  
Longitudinal Optical ◽  
Phonon Energy ◽  
Longitudinal Optical Phonon ◽  
Quantum Cascade

Quantum cascade lasers with voltage defect of less than one longitudinal optical phonon energy

2009 ◽  
Vol 94 (25) ◽  
pp. 251114 ◽  
Author(s):  
Matthew D. Escarra ◽  
Anthony J. Hoffman ◽  
Kale J. Franz ◽  
Scott S. Howard ◽  
Richard Cendejas ◽  
...  
Keyword(s):  
Optical Phonon ◽  
Quantum Cascade Lasers ◽  
Longitudinal Optical ◽  
Phonon Energy ◽  
Longitudinal Optical Phonon ◽  
Quantum Cascade ◽  
Cascade Lasers
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