effect of variation of specifications of quantum well and contact length on performance of inp-based vertical cavity surface emitting laser (vcsel)

In this study, the effects of variation of thickness and the number of quantum wells as well as the contact length were investigated. in this paper, a vertical cavity surface emitting laser was simulated using of software based on finite element method. the number of quantum wells was changed from 3 to 9 and the results which are related to output power, resonance wavelength and threshold current were extracted. output specifications in terms of quantum wells thicknesses of 3.5nm to 9.5nm were evaluated. contact thickness is also changed from 0.5μm to 3μm. results showed that as the number of quantum wells increased, the resonance wavelength also increased and photon energy decreased. by reducing the thickness of the quantum well, the threshold current and radiation wavelength were also decreased. by increasing the contact length, threshold current and output power increased. temperature inside the network and density of photon were increased as the contact length increased.