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Proceedings Paper

High-power pulse-current-operated violet light emitting lasers grown on bulk GaN substrates
Author(s): Piotr Perlin; Mike Leszczynski; Pawel Prystawko; Robert Czernetzki; Przemek Wisniewski; Janusz L. Weyher; Grzegorz Nowak; Jola Borysiuk; Lucja Gorczyca; Tomasz Swietlik; Gijs Franssen; Agata Bering; Czeslaw Skierbiszewski; Izabella Grzegory; Tadek Suski; Sylwester Porowski
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Paper Abstract

High-power laser diodes emitting in the violet - UV region are needed for many applications related to data storage, full color laser projectors, pollution screening etc. This type of device is difficult to fabricate by using the presently available technology of epitaxial growth which employs the lateral overgrowth scheme to reduce the dislocation density in the active layer of the device. This paper presents a new generation of wide stripe laser diodes, which structures were coherently grown on bulk, nearly defect free GaN substrates. Thanks to a low and homogeneously distributed dislocation density (3×105cm-3), these devices are able to emit a very large optical power in excess of 2.5 W with a slope efficiency per facet of around 0.3 W/A and threshold current densities of 5-10 kA/cm2. The use of wide 15 μm stripe lowers the optical power density on the mirrors, and helps avoiding their optical damage. We believe that these devices clearly show the potential of homoepitaxy for high-power lasers applications.

Paper Details

Date Published: 11 May 2004
PDF: 9 pages
Proc. SPIE 5365, Novel In-Plane Semiconductor Lasers III, (11 May 2004); doi: 10.1117/12.523580
Show Author Affiliations
Piotr Perlin, High Pressure Research Ctr. (Poland)
Mike Leszczynski, High Pressure Research Ctr. (Poland)
Pawel Prystawko, High Pressure Research Ctr. (Poland)
Robert Czernetzki, High Pressure Research Ctr. (Poland)
Przemek Wisniewski, High Pressure Research Ctr. (Poland)
Janusz L. Weyher, High Pressure Research Ctr. (Poland)
Grzegorz Nowak, High Pressure Research Ctr. (Poland)
Jola Borysiuk, High Pressure Research Ctr. (Poland)
Lucja Gorczyca, AGH Univ. of Science and Technology (Poland)
Tomasz Swietlik, High Pressure Research Ctr. (Poland)
Gijs Franssen, High Pressure Research Ctr. (Poland)
Agata Bering, TopGaN Ltd. (Poland)
Czeslaw Skierbiszewski, High Pressure Research Ctr. (Poland)
Izabella Grzegory, High Pressure Research Ctr. (Poland)
Tadek Suski, High Pressure Research Ctr. (Poland)
Sylwester Porowski, High Pressure Research Ctr. (Poland)

Published in SPIE Proceedings Vol. 5365:
Novel In-Plane Semiconductor Lasers III
Claire F. Gmachl; David P. Bour, Editor(s)

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