PROJECT TITLE :
Optimisation of the dislocation filter layers in 1.3-μm InAs/GaAs quantum-dot lasers monolithically grown on Si substrates
The authors report 1.3-μm InAs/GaAs quantum-dot (QD) lasers monolithically grown on a Si substrate by optimising the dislocation filter layers (DFLs). InAlAs/GaAs strained layer superlattices (SLSs) are presented as DFLs during this study. A distinct improvement within the InAs/GaAs QDs was observed when using InAlAs/GaAs SLSs as a result of of the effective filtering of threading dislocations. Consequently, a laser with a threshold current density of 194 A/cm2 at area temperature and an operating temperature as high as eighty five°C is successfully demonstrated. These results show the potential for integrating III-V QD materials on a Si platform via InAlAs/GaAs SLSs as DFL.
Did you like this research project?
To get this research project Guidelines, Training and Code... Click Here