Simple theoretical model for the temperature stability of InAs/GaAs self-assembled quantum dot lasers with different p-type modulation doping levels

2008 ◽  
Vol 93 (16) ◽  
pp. 161103 ◽  
Author(s):  
C. Y. Jin ◽  
H. Y. Liu ◽  
Q. Jiang ◽  
M. Hopkinson ◽  
O. Wada
Keyword(s):  
Theoretical Model ◽  
Quantum Dot ◽  
Temperature Stability ◽  
Quantum Dot Lasers ◽  
Modulation Doping ◽  
Simple Theoretical Model ◽  
Self Assembled ◽  
P Type

scholarly journals Digitally Chirped Multilayer Quantum Dot Lasers with Dual-Wavelength Lasing Emissions

2019 ◽  
Vol 9 (11) ◽  
pp. 2246
Author(s):  
Yi-Jan Sun ◽  
Pin-Hsien Hsieh ◽  
Gray Lin
Keyword(s):  
Theoretical Model ◽  
Quantum Dot ◽  
Ground State ◽  
Slope Efficiency ◽  
Injection Current ◽  
Dual Wavelength ◽  
Quantum Dot Lasers ◽  
Simulation Results ◽  
Current Characteristics

The dual-wavelength lasing emissions of digitally chirped multilayer quantum dot (QD) lasers are investigated both experimentally and theoretically. The two lasing wavelengths are both identified as ground-state (GS) emissions but originated from different stacks of QD multilayers. The lasing spectra exhibited broadening and splitting properties by injecting more current. Moreover, the wavelength-resolved light-current characteristics reveal that first GS lasing intensity upon the threshold of second GS transitions neither saturates nor droops with increasing injection current, but increases with slightly reduced slope efficiency. A theoretical model is developed for digitally chirped multilayer QD lasers. The simulation results qualitatively reproduce the experimental observations.

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