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HL: Fachverband Halbleiterphysik

HL 64: Poster: Photovoltaics and Optics

HL 64.43: Poster

Mittwoch, 22. März 2017, 15:00–19:00, P1C

Development of AlGaInP-based electrically-pumped VECSELs emitting in the red spectral range — •Mona Stadler, Matthias Paul, Stefan Hepp, Michael Jetter, and Peter Michler — Institut für Halbleiteroptik und Funktionelle Grenzflächen and Research Center SCoPE, Allmandring 3, 70569 Stuttgart, Germany

The electrically-pumped vertical external-cavity surface-emitting laser (EP-VECSEL) is a promising device to combine the advantages of electrically-pumped semiconductor lasers with them of optically pumped vertical-cavity surface-emitting lasers (VCSELs). Next to high and scalable output powers and good beam qualities of the VECSEL, offers the open cavity the use of intra-cavity elements for different applications, e.g. frequency stabilized emission or frequency-doubling. In electrical driven lasers the pumping scheme is simplified drastically, compared to optical pumped systems. Additionally, electrical pumping facilitates higher integration and further miniaturization and is therefore an important step towards compact laser sources. Regarding the chip design of the EP-VECSEL, it should be as easy as possible, keeping optical losses and Joule heating, which are unavoidable in doped layers, minimal. Therefore, a good thermal management, a suitable carrier distribution and a balance between the optical and electrical requirements have to be found. We present the first steps towards an electrically-pumped AlGaInP-based VECSEL emitting in the red spectral range regarding the chip design and its spectral and luminescence characteristics.