2024
DOI: 10.1063/5.0240488
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Experimental study of gain characteristics in relation to quantum-well width of deep-ultraviolet laser diodes

Ziyi Zhang,
Maki Kushimoto,
Akira Yoshikawa
et al.

Abstract: The gain characteristics of electrically injected AlGaN-based deep-ultraviolet laser diodes were studied with respect to their quantum-well (QW) width dependence by the analysis of the threshold currents and gains for various cavity lengths. Among the fabricated QWs with widths of d = 9, 4.5, and 3 nm, the QW with the smallest width of 3 nm was found to have the highest material gain and lowest transparency carrier density. In contrast to recent arguments in favor of wider QWs for deep-ultraviolet laser diodes… Show more

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