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

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7 Author(s)
Wenzel, H. ; Ferdinand-Braun-Inst. fur Hochstfrequenztechnik, Berlin ; Bugge, F. ; Dallmer, M. ; Dittmar, F.
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We compare ridge-waveguide lasers with trench widths of 5 and 20 mum. The emission wavelength is around 1064 nm and the ridge width is 5 m. The maximum output power exceeds 2 W. The 5-mum 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 15deg due to a super-large optical cavity.

Published in:

Photonics Technology Letters, IEEE  (Volume:20 ,  Issue: 3 )