Disclosed is an edge-emitting semiconductor laser that has a single waveguiding structure, and that comprises means for reducing the transverse divergence of the far-field pattern of the laser emission. Typically these means comprise reflecting means (preferably transverse distributed Bragg reflectors)...http://www.google.de/patents/US5088099?utm_source=gb-gplus-sharePatent US5088099 - Apparatus comprising a laser adapted for emission of single mode radiation having low transverse divergence
