Atomic-scale modeling of interface roughness scattering in quantum cascade lasers

2021 ◽  
Author(s):  
Thomas Grange ◽  
Samik Mukherjee ◽  
Giovanni Capellini ◽  
Michele Montanari ◽  
Luca Persichetti ◽  
...  
Keyword(s):  
Quantum Cascade Lasers ◽  
Interface Roughness ◽  
Atomic Scale ◽  
Quantum Cascade ◽  
Scale Modeling ◽  
Interface Roughness Scattering ◽  
Cascade Lasers

Quantum Cascade Lasers

2020 ◽  
pp. 491-526
Author(s):  
Vurgaftman Igor
Keyword(s):  
Quantum Cascade Lasers ◽  
Threshold Current ◽  
Threshold Current Density ◽  
Interface Roughness ◽  
Frequency Combs ◽  
Quantum Cascade ◽  
Wall Plug Efficiency ◽  
Interface Roughness Scattering ◽  
Cascade Lasers ◽  
Considerable Detail

This chapter describes the most commonly used approaches for computing the band structure of active materials with intersubband optical transitions. The physics of quantum cascade lasers (QCLs) is discussed in detail, including the mechanisms that limit the threshold current density, threshold voltage, wall-plug efficiency, and temperature sensitivity of state-of-the-art devices. The important roles of phonon and interface roughness scattering in determining threshold are emphasized. The chapter also compares the performance of QCLs to other mid-IR lasers in considerable detail and makes some conclusions as to which sources are preferred depending on the emission wavelength and application. Finally, the physical principles of laser-based frequency combs, including self-starting frequency-modulated QCL combs, are discussed.

Leakage current in quantum-cascade lasers through interface roughness scattering

2013 ◽  
Vol 103 (16) ◽  
pp. 161102 ◽  
Author(s):  
Y. V. Flores ◽  
S. S. Kurlov ◽  
M. Elagin ◽  
M. P. Semtsiv ◽  
W. T. Masselink
Keyword(s):  
Leakage Current ◽  
Quantum Cascade Lasers ◽  
Interface Roughness ◽  
Quantum Cascade ◽  
Interface Roughness Scattering ◽  
Cascade Lasers

Reduced interface roughness scattering in InGaAs/InAlAs quantum cascade lasers grown on (411)A InP substrates

2018 ◽  
Vol 113 (12) ◽  
pp. 121110 ◽  
Author(s):  
M. P. Semtsiv ◽  
S. S. Kurlov ◽  
D. Alcer ◽  
Y. Matsuoka ◽  
J.-F. Kischkat ◽  
...  
Keyword(s):  
Quantum Cascade Lasers ◽  
Interface Roughness ◽  
Quantum Cascade ◽  
Interface Roughness Scattering ◽  
Inp Substrates ◽  
Cascade Lasers
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