Fundamental-Lateral Mode Stabilized High-Power Ridge-Waveguide Lasers With a Low Beam Divergence

H. Wenzel, F. Bugge, M. Dallmer, F. Dittmar, J. Fricke, K.H. Hasler, and G. Erbert

Ferdinand-Braun-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Straße 4, D-12489 Berlin, Germany

Published in:
IEEE Photonics Technol. Lett., vol. 20, no. 3, pp. 214-216, (2008).
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Abstract:
We compare ridge-waveguide lasers with trench widths of 5 and 20 µm. The emission wavelength is around 1064 nm and the ridge width is 5 µm. The maximum output power exceeds 2W. The 5-µm trench-width device exhibits a much more stable lateral far-field. The full-width at half-maximum of the vertical far-field profile is only 15° due to a super-large optical cavity.

Index Terms:
High-power lasers, ridge-waveguide (RW) lasers, semiconductor lasers.

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