Modeling the Effects of Temperature and Doping Density on the Performance of Mid-infrared Quantum Cascade Lasers

Authors D. Sebbar1, 2 , B. Boudjema1

LRPCSI, Université 20 août 1955-Skikda, B.P. 26, Route d'El-Hadaiek, 21000 Skikda, Algeria

Laboratoire de Physique des Techniques Expérimentales et Applications de Médéa (LPTEAM), Université de Médéa, 26000 Médéa, Algeria

Issue Volume 10, Year 2018, Number 1
Dates Received 03 October 2017; revised manuscript received 13 November 2017; published online24 February 2018
Citation D. Sebbar, B. Boudjema, J. Nano- Electron. Phys. 10 No 1, 01005 (2018)
DOI 10.21272/jnep.10(1).01005
PACS Number(s) 42.55.Px, 42.55.Ah
Keywords Quantum cascade laser (3) , Rate equations, Effect of temperature, Thermally activated population, Sheet doping density, Threshold current density, Output power (3) .

In this paper, we present the effects of temperature and doping density on the performance of mid-infrared quantum cascade lasers of three-level system based on rate equation. With taking into account the thermally activated population of the lower and upper lasing states. The theoretical study based on rate equation model leads to evaluation the dependence of the threshold current density and output power with temperature and sheet doping density with ns = 4.1, 5.2 and 6.5 ⋅1011 cm – 2. This model allowed us to evaluate the shift of the energy difference between the upper and lower state with the variation the doping density. The results also show that output power is decreased when the temperature and the doping density are increased. The obtained results by the theoretical calculations are in good agreement with the experimental data, the results obtained from this study can be useful to improve the performance of the quantum cascade lasers.

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