Investigation the direct current modulation in Nano quantum cascade lasers

Abstract EN

In this paper, a theoretical investigation of direct current modulation in Nano quantum cascade lasers is presented.

since the spontaneous emission effect is an important factor in a microcavity the rate equations model has been reconsidered to include the Purcell spontaneous emission enhancement factor f and the spontaneous emission factor.

the results indicate that the present rate equation model can be using to study the effect of Purcell spontaneous emission enhancement factor f and the spontaneous emission factor on the direct current modulation in Nano quantum cascade lasers.

the results indicate that the effects of Purcell spontaneous emission enhancement factor f and the spontaneous emission factor are very similar to the effects of these factors in traditional semiconductor lasers.

it is found that the increase in Purcell factor value leads to increase in photon number and decrease the carrier number in all quantum states.

the decreases in enhanced spontaneous emission factor value leads to increases in carrier number and decreases the photon number in all quantum states.

this results coming in good agreement with other references.