By combining,the field- susceptibility formalism with the optical Bloch equations method,we derive the density ma- trix elements and their emitting signal intensity for the computation of the energy transfer between two quantum dots excited by optical near fields and placed in a complex geometry.

The spectrum evolution of the femtosecond laser pulse in a three-level organic molecular medium(4,4 -bis(dimethylamino) stilbene) is studied theoretically by solving the Maxwell-Bloch equations using an iterative predictorcorrector finite-difference time-domain method.

We study the interaction between the ultra-short laser pulses and the one-dimensional symmetrical π conjugated molecular material (4,4′-bis (dimethylamino) stilbene) by solving Maxwell-Bloch equations.

The effect of time-dependent ionization on two-photon absorption (TPA) cross section of 4,4\'-bis (dimethylamino) stilbene molecules is studied, through solving, the Maxwell-Bloch equations using an iterative predictor-corrector and finite-difference time-domain technique.

To study the evolution of femtosecond(fs) laser pulse in a long-distance two-level medium,the Maxwell-Bloch equations of 5 fs carrier interaeting with two-level medium are numerically solved with use of finite-difference time domain procedure.