Lasing-induced reduction in core heating in high wall plug efficiency quantum cascade lasers

2009 ◽  
Vol 94 (4) ◽  
pp. 041101 ◽  
Author(s):  
Anthony J. Hoffman ◽  
Phillip X. Braun ◽  
Matthew D. Escarra ◽  
Scott S. Howard ◽  
Kale J. Franz ◽  
...  
Keyword(s):  
Quantum Cascade Lasers ◽  
Quantum Cascade ◽  
Wall Plug Efficiency ◽  
Cascade Lasers

scholarly journals λ~71 μm quantum cascade lasers with 19% wall-plug efficiency at room temperature

2011 ◽  
Vol 19 (18) ◽  
pp. 17203 ◽  
Author(s):  
Richard Maulini ◽  
Arkadiy Lyakh ◽  
Alexei Tsekoun ◽  
C. Kumar N. Patel
Keyword(s):  
Room Temperature ◽  
Quantum Cascade Lasers ◽  
Quantum Cascade ◽  
Wall Plug Efficiency ◽  
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.

Mid-infrared quantum cascade lasers with high wall plug efficiency

2009 ◽  
Author(s):  
Y. Bai ◽  
B. Gokden ◽  
S. Slivken ◽  
S. R. Darvish ◽  
S. A. Pour ◽  
...  
Keyword(s):  
Quantum Cascade Lasers ◽  
Mid Infrared ◽  
Quantum Cascade ◽  
Wall Plug Efficiency ◽  
Cascade Lasers

Very high wall plug efficiency of quantum cascade lasers

2010 ◽  
Author(s):  
Y. Bai ◽  
S. Slivken ◽  
S. R. Darvish ◽  
M. Razeghi
Keyword(s):  
Quantum Cascade Lasers ◽  
Quantum Cascade ◽  
Wall Plug Efficiency ◽  
Cascade Lasers ◽  
Very High
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