Dynamic Characterization of InAs/AlGaAs Broadband self-Assembled Quantum Dot Lasers

Article ID

SFR7G1R2

Dynamic Characterization of InAs/AlGaAs Broadband self-Assembled Quantum Dot Lasers

D. Ghodsi Nahri
D. Ghodsi Nahri
H. Arabshahi
H. Arabshahi Islamic Azad University, Mashhad, Iran
DOI

Abstract

In this research we have solved the rate equations for InAs/AlGaAs broadband selfassembled quantum dot (QD) laser with considering the homogeneous broadening (HB) and inhomogeneous broadening (IHB) of the linear optical gain using fourth order Runge-Kutta method. We show that enhancing the injected current results in improving the dynamic characteristics, and increasing the steady-state photons, and show that with increase of the full width at half maximum (FWHM) of HB, the threshold current, turn-on delay and steady-state photons increase. Our calculation results also show that the simulated broadband selfassembled QD laser does not reach the complete steady-state when HB is near or equal to IHB.

Dynamic Characterization of InAs/AlGaAs Broadband self-Assembled Quantum Dot Lasers

In this research we have solved the rate equations for InAs/AlGaAs broadband selfassembled quantum dot (QD) laser with considering the homogeneous broadening (HB) and inhomogeneous broadening (IHB) of the linear optical gain using fourth order Runge-Kutta method. We show that enhancing the injected current results in improving the dynamic characteristics, and increasing the steady-state photons, and show that with increase of the full width at half maximum (FWHM) of HB, the threshold current, turn-on delay and steady-state photons increase. Our calculation results also show that the simulated broadband selfassembled QD laser does not reach the complete steady-state when HB is near or equal to IHB.

D. Ghodsi Nahri
D. Ghodsi Nahri
H. Arabshahi
H. Arabshahi Islamic Azad University, Mashhad, Iran

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H. Arabshahi. 1969. “. Global Journal of Science Frontier Research – A: Physics & Space Science GJSFR-A Volume 12 (GJSFR Volume 12 Issue A1): .

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Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

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Dynamic Characterization of InAs/AlGaAs Broadband self-Assembled Quantum Dot Lasers

D. Ghodsi Nahri
D. Ghodsi Nahri
H. Arabshahi
H. Arabshahi Islamic Azad University, Mashhad, Iran

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