%0 Journal Article %A K. Melouk and M. Dellakrachai %D 2015 %J International Journal of Physical and Mathematical Sciences %B World Academy of Science, Engineering and Technology %I Open Science Index 106, 2015 %T Characterization of InGaAsP/InP Quantum Well Lasers %U https://publications.waset.org/pdf/10002690 %V 106 %X Analytical formula for the optical gain based on a simple parabolic-band by introducing theoretical expressions for the quantized energy is presented. The model used in this treatment take into account the effects of intraband relaxation. It is shown, as a result, that the gain for the TE mode is larger than that for TM mode and the presence of acceptor impurity increase the peak gain. %P 618 - 622