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

Sergi Cuesta Arcos; Lou Denaix; Quang Minh Thai; Edith Bellet-Amalric; Catherine Bougerol; Stephen T. Purcell; Le Si Dang; Eva Monroy

doi:10.1117/12.2606355

5 March 2022 Study of the optical properties of AlGaN/GaN separate confinement heterostructures for low-threshold e-beam pumped UV lasers

Sergi Cuesta Arcos, Lou Denaix, Quang Minh Thai, Edith Bellet-Amalric, Catherine Bougerol, Stephen T. Purcell, Le Si Dang, Eva Monroy

Author Affiliations +

Proceedings Volume PC12001, Gallium Nitride Materials and Devices XVII; PC1200118 (2022) https://doi.org/10.1117/12.2606355
Event: SPIE OPTO, 2022, San Francisco, California, United States

Conference Poster

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.

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Sergi Cuesta Arcos, Lou Denaix, Quang Minh Thai, Edith Bellet-Amalric, Catherine Bougerol, Stephen T. Purcell, Le Si Dang, and Eva Monroy "Study of the optical properties of AlGaN/GaN separate confinement heterostructures for low-threshold e-beam pumped UV lasers", Proc. SPIE PC12001, Gallium Nitride Materials and Devices XVII, PC1200118 (5 March 2022); https://doi.org/10.1117/12.2606355

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