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Narrow vertical beam divergence laser diode based on longitudinal photonic band crystal waveguide

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6 Author(s)
Maximov, M.V. ; Abraham Ioffe Phys. Tech. Inst., St Petersburg, Russia ; Shernyakov, Yu.M. ; Novikov, I.I. ; Shchukin, V.A.
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Narrow (<5°) vertical beam divergence is realised in an InGaAs-AlGaAs double-quantum well edge-emitting laser diode. A multilayer GaAs-AlGaAs structure was used as a waveguide, acting as a longitudinal photonic band crystal and enabling stable fundamental mode operation. Longitudinal mode grouping effect is observed in the lasing spectrum and attributed to the transverse cavity-induced hole-burning effect.

Published in:

Electronics Letters  (Volume:39 ,  Issue: 24 )