Simulation of Direct Pumping of Quantum Dots in a Quantum Dot Laser

Journal of Optoelectronical Nanostructures

مقاله 7، دوره 2، شماره 2 - شماره پیاپی 5، مرداد و شهریور 2017، صفحه 61-70   

نوع مقاله: Articles

نویسندگان

Masoud Rezvani Jalal^* ؛ Mahshid Habibi

Department of Physics, Malayer University, Malayer, Iran

تاریخ دریافت: 28 مرداد 1394،  تاریخ بازنگری: 07 شهریور 1396،  تاریخ پذیرش: 08 شهریور 1396 

چکیده

In this paper, the nonlinear rate equations governing a quantum dot laser is
used to simulate the transient as well as the steady-state behaviors of the laser.
Computation results show that the rate equations are capable of simulating true behavior
of a quantum dot laser. Then, the pump rates of the rate equations (which show indirect
electrical pumping of the quantum dots through a wetting layer) are changed so that
they can show direct electrical pumping of the quantum dots. Simulation results predict
that a quantum dot laser with direct pumping has much lower threshold current than the
indirect one. It is also shown that duration time of the transient regime to reach steadystate operation is shorter in direct pumping.

کلیدواژه‌ها

Quantum Dot Laser؛ Direct Pumping؛ Indirect Pumping؛ Relaxation Oscillation

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