Abstract:
Semiconductor quantum dots have gained considerable research interest in the recent years. Their unique tunable electrical and optical properties make them ideal for applications in transistors, LEDs, lasers and solar cells. In particular their application in semiconductor laser is an area of research that draws considerable interest. In this work, we review the recent advancements in quantum dot laser technology. A brief review of semiconductor nanostructures and quantum confinement effect is presented at the beginning. Various fabrication methods of quantum dots are discussed as well. Secondly, we examined the physical properties of quantum dot lasers along with history and development of quantum dot laser technology and different kinds of quantum dot lasers comparing with other types of lasers. Finally, we describe the rate equation model for quantum dot lasers, simulate the model in MATLAB software package and discuss the results obtained from the simulation
