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Ridge waveguide DBR laser with nonabsorbing grating and transparent integrated waveguide

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3 Author(s)
Hofstetter, D. ; Paul Scherrer Inst., Zurich, Switzerland ; Zappe, H.P. ; Epler, J.E.

A ridge waveguide GaAs/AlGaAs DBR laser with a nonabsorbing grating section and a monolithically integrated transparent waveguide has been fabricated by the use of vacancy-enhanced quantum well disordering (VED). This technique allows the definition of absorbing and transparent regions, and requires only a single growth step. No VED-enhanced degradation of the laser quality was noted. The optical output power was 5 mW from both the cleaved facet and the grating reflector, threshold currents were 25 mA and the slope efficiencies were 0.2 W/A

Published in:

Electronics Letters  (Volume:31 ,  Issue: 12 )