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THERMAL ENERGY EFFECT ON OPTOELECTRONIC CHARACTERISTICS OF INGAASN/GAAS LASER DIODE UNDER THE VARIATION OF QUANTUM WELL NUMBER

ABSTRACT
A laser device based on InGaAsN quantum well active regions emitting at 1.26 mm is reported. The performances of the laser under the effect of thermal energy are investigated in terms of threshold current, Ith, gain parameter, gt, photon energy, hn, and cavity length, Lc. Four structures with one, two, and three quantum wells along with a structure that have three quantum wells with tensile strained barriers are proposed to study the relation between the peak gain, gpeak, and photon energy. The founds show that structures with one and two quantum wells operating at room temperature and under pulse wave condition, exhibit a linear dependence of gpeak on both Lc and photon energy. It is shown that the threshold current density, Jth, increases at any temperature with the cavity length Lc ranging from 250 nm to 1000 nm. Also, the investigation of the proposed structures shows that gt decreases with increasing temperature, while the ratio of the cur-rent density parameter to internal efficiency, Jt/hi, per well increases with the quantum well number. A comparison was carried out for two particular structures with three quantum wells and GaAsP barriers, the results show a decrease in the threshold current per well.
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PAPER SUBMITTED: 2022-10-05
PAPER REVISED: 2022-11-15
PAPER ACCEPTED: 2022-11-20
PUBLISHED ONLINE: 2023-01-21
DOI REFERENCE: https://doi.org/10.2298/TSCI22S1365A
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2022, VOLUME 26, ISSUE Special issue 1, PAGES [365 - 372]
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© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence