Quantum Dot Laser: Turn-on Dynamics and the Operation Characteristics

ISBN-13: 9783659834165 / Angielski / Miękka / 2016 / 184 str.

Chassib A. Emshary; Shaker I. Easa

Opis

This book performs comparison of quantum-optical models to gain a deeper understanding of the semiconductor quantum dot laser (QDL) theory. There are contributions of the photon-assisted polarization and nonlinear Coulomb scattering on the turn-on dynamics. We study the turn-on dynamics of QDLs theoretically using two specific models, viz, those derived from master equations and rate equations. By use another model, we study the characteristic temperature and quantum efficiency in QDs microcavity. A factor is added to the s-shall population's equations and their theoretical simulation results present of the turn-on dynamics of InGaAs/GaAs QDL output lasing with CW wavelength of 1.3mim at room-temperature. This is including the photon-assisted polarization contribution. Other results present a theoretical simulation of the turn-on dynamics of InAs/GaAs QDL at the same wavelength driven by electrical current pulses. In this book a study of the confined-carrier level occupancy in a QD, threshold current density, characteristic temperature, certain temperature, and lowest excitation energy of QD with 1.55mim GaInAsP/InP QDL are presented.

O autorze

Ra'ed M. Hassan received the Ph.D. degree in Laser physics, from the College of Education, University of Basrah, Basrah, IRAQ, in 2011. He is currently work an Associate Professor in the Department of Physics, College of Education for Pure Science, University of Basrah.