TY - JOUR T1 - Simulation of effect of quantum dots volume density on photons population and optical gain in ground state and excited state for InAs-InP quantum dot lasers TT - شبیه سازی اثر چگالی حجمی نقاط کوانتومی بر جمعیت فوتون ها و بهره ی اپتیکی در ترازهای حالت پایه و برانگیخته لیزر نقطه کوانتومی InAs-InP JF - opsi JO - opsi VL - 20 IS - 0 UR - http://opsi.ir/article-1-413-en.html Y1 - 2014 SP - 1165 EP - 1168 KW - Energy level KW - Optical gain KW - Volume density of quantum dot KW - Quantum dot laser KW - Rate equations N2 - Abstract- In this paper we have investigated photon dynamics in two ground state and exited state levels of an InAs-InP quantum dot (QD) laser system , numerical models that based on rate equation are presented and is calculated by using fourth order Runge- Kutta method . As well as, numerical results for variations of photon densitiy and variations of optical gain in different volume density of quantum dots are also presented and discussed. The effect of volume density of quantum dot on turn on delay of laser has also discussed. M3 ER -