Optical and Quantum Electronics

, Volume 40, Issue 5–6, pp 379–384

Thermal lensing in high-power ridge-waveguide lasers

Article

Abstract

The lateral farfield characteristics of ridge-waveguide (RW) lasers emitting around 1,064 nm with an output power of 1.3 W at an injection current of 2 A were measured and modeled. Due to trenches with widths between 2.5 and 20 μm defining the narrow RW, radiation leaks out into the outer regions which suppresses higher-order modes, but which can also lead to a double-peaked lateral farfield of the fundamental mode. A simple model taking into account the thermal lensing effect explains well the lateral farfield behavior observed.

Keywords

Semiconductor lasers High power lasers Ridge waveguide lasers 

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Copyright information

© Springer Science+Business Media, LLC. 2008

Authors and Affiliations

  1. 1.Ferdinand-Braun-Institut für HöchstfrequenztechnikBerlinGermany

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