International Journal of Scientific Engineering and Technology

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The Effect of Inhomogeneous Broadening on Characteristics of Three-State Lasing Ingaas/Gaas Quantum Dot Lasers


Affiliations
1 Department of Physics, University of Guilan, Rasht, Iran, Islamic Republic of
 

We have investigated the effects of inhomogeneous broadening on the three-state of InGaAs/GaAs quantum dot (QD) lasers. The Numerical models based on rate equations is presented with considering inhomogeneous broadening. We have calculated output power and optical gain that show differences lasing from the ground state and exited state and upper continuum state. The comparison between these three energy levels leads to a qualitative understanding for origin of the three-state lasing in InGaAs/GaAs QD lasers.

Keywords

Energy Level, Inhomogeneous Broadening, Output Power, Quantum Dot Lasers, Rate Equations.
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  • The Effect of Inhomogeneous Broadening on Characteristics of Three-State Lasing Ingaas/Gaas Quantum Dot Lasers

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Authors

Azam Shafieenezhad
Department of Physics, University of Guilan, Rasht, Iran, Islamic Republic of
Esfandiar Rajaei
Department of Physics, University of Guilan, Rasht, Iran, Islamic Republic of
Saeed Yazdani
Department of Physics, University of Guilan, Rasht, Iran, Islamic Republic of

Abstract


We have investigated the effects of inhomogeneous broadening on the three-state of InGaAs/GaAs quantum dot (QD) lasers. The Numerical models based on rate equations is presented with considering inhomogeneous broadening. We have calculated output power and optical gain that show differences lasing from the ground state and exited state and upper continuum state. The comparison between these three energy levels leads to a qualitative understanding for origin of the three-state lasing in InGaAs/GaAs QD lasers.

Keywords


Energy Level, Inhomogeneous Broadening, Output Power, Quantum Dot Lasers, Rate Equations.