N. Ammouri, H. Christopher, A. Maaßdorf, J. Fricke, A. Ginolas, A. Liero, H. Wenzel, A. Knigge, and G. Tränkle

Published in:

Opt. Lett., vol. 48, no. 24, pp. 6520-6523, doi:10.1364/OL.510521 (2023).

Abstract:

Distributed feedback (DFB) broad area (BA) lasers with multiple epitaxially stacked active regions and tunnel junctions designed for emission around 900 nm are investigated. DFB BA lasers with a cavity length of 1 mm and different stripe widths are compared in terms of their electro-optical performance and beam quality. The laser with a 200 µm stripe width achieved a high optical pulse power of 100 W in 10 ns long pulses at an injection current of 63 A, resulting in a brightness of 81 MW/cm²sr. The optical spectrum of both lasers is centered at around 886 nm, exhibiting a narrow spectral bandwidth of 0.2 nm (64 pm/K).

Related Topics:

Bragg reflectors, Diode lasers, Distributed feedback lasers, Electron beam lithography, Laser applications, Laser systems.

© 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
https://doi.org/10.1364/OL.510521

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