Absorption and dispersion management of near-infrared probe light in the carbon nanotube quantum dot nanostructure with spin–orbit coupling

Abstract

We investigated the absorption–dispersion properties of near-infrared probe light in the carbon nanotube quantum dot (CNT-QD) nanostructure with spin–orbit (SO) coupling parameter based on quantum mechanical density matrix formalisms. We found that in the presence of SO parameter, the amplification of probe light can be achieved in the presence and lack of population inversion (lasing with and without inversion). Moreover, we realized that the normal and anomalous dispersion of probe light can occur by redacting the incoherent pumping and transverse magnetic fields.