1.9 W continuous-wave single transverse mode emission from 1060nm edge-emitting lasers with vertically extended lasing area
M.J. Miah1, T. Kettler1,2, K. Posilovic1, V.P. Kalosha1, D. Skoczowsky2, R. Rosales1, D. Bimberg1, J. Pohl3, and M. Weyers3
Published in:
Appl. Phys. Lett., vol. 105, no. 15, 151105 (2014).
Abstract:
High-brightness edge-emitting semiconductor lasers having a vertically extended waveguide structure emitting in the 1060 nm range are investigated. Ridge waveguide (RW) lasers with 9 µm stripe width and 2.64mm cavity length yield highest to date single transverse mode output power for RW lasers in the 1060 nm range. The lasers provide 1.9 W single transverse mode optical power under continuous-wave (cw) operation with narrow beam divergences of 9° in lateral and 14° (full width at half maximum) in vertical direction. The beam quality factor M2 is less than 1.9 up to 1.9 W optical power. A maximum brightness of 72 MWcm-2sr-1 is obtained. 100 µm wide and 3mm long unpassivated broad area lasers provide more than 9 W optical power in cw operation.
1 Institut für Festkörperphysik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin, Germany
2 PBC Lasers GmbH, Hardenbergstr. 36, 10623 Berlin, Germany
3 Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Straße 4, D-12489 Berlin, Germany
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