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Conference 12001 > Paper 12001-63
Paper 12001-63

Study of the optical properties of AlGaN/GaN separate confinement heterostructures for low-threshold e-beam pumped UV lasers

On demand | Presented live 26 January 2022

Abstract

In this work, we study the internal quantum efficiency and the lasing threshold of AlGaN/GaN heterostructures designed for UV laser emission. We discuss the effect of carrier diffusion and carrier localization in the optical properties at low and room temperature. The implementation of a graded-index separate confinement heterostructure results in enhanced carrier collection, reducing the lasing threshold. However, this improvement is not correlated with the internal quantum efficiency of the samples.

Presenter

Sergi Cuesta Arcos
CEA-Grenoble (France)
BSc in Engineering Physics at Universitat Politecnica de Catalunya - BarcelonaTech. MSc in Nanosciences and nanotechnologies at Université Grenoble Alpes. Currently working on his PhD at CEA Grenoble in the development of e-beam pumped AlGaN-based UV lasers.
Presenter/Author
Sergi Cuesta Arcos
CEA-Grenoble (France)
Author
CEA-Grenoble (France)
Author
Institut Lumière Matière (France)
Author
Edith Bellet-Amalric
CEA-Grenoble (France)
Author
Catherine Bougerol
Institut NÉEL (France)
Author
Institut Lumière Matière (France)
Author
Institut NÉEL (France)
Author
CEA-Grenoble (France)