Improvement of the current–voltage performance of broadened asymmetric waveguide InGaAs/AlGaAs/GaAs semiconductor lasers (λ = 940–980 nm). (February 2022)

• Record Type: Journal Article
• Authors: Volkov, N A; Telegin, K Yu; Gul'tikov, N V; Sabitov, D R; Andreev, A Yu; Yarotskaya, I V; Padalitsa, A A; Ladugin, M A; Marmalyuk, A A; Shestak, L I; Kozyrev, A A; Panarin, V A
• Is Part Of: Quantum electronics. Volume 52:Number 2(2022)
• Page Start: 179
• Page End: 181
• Publication Date: 2022-02
• Subjects: semiconductor laser -- asymmetric waveguide -- current?voltage characteristic -- quantum well -- output power.; Quantum electronics -- Periodicals; 537.5
• DOI: 10.1070/QEL17987
• Languages: English
• ISSNs: 1063-7818

Abstract

Abstract: The purpose of this work is to improve the current–voltage ( I – V ) performance of semiconductor lasers based on broadened asymmetric waveguide InGaAs/AlGaAs/GaAs separate-confinement double heterostructures. We analyse the effect of AlGaAs waveguide layer composition on the output characteristics of the lasers and demonstrate that the decrease in the series resistance of the lasers and the threshold voltage of their I – V characteristic as a result of a decrease in the percentage of AlAs in the waveguide layers shifts the drop in the differential quantum efficiency of the lasers to higher pump currents, despite the decrease in the energy depth of the quantum wells in the active region.